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SBE 26plus Manual - Sea

1. 001 01 04 First release of SBE 26p us improved power endurance more flexible programming changes to Seasoft for Waves to accommodate new version Limited production to fulfill contract 002 05 04 First general production version of 26plus 003 12 04 Firmware 6 0 changes associated changes for Seasoft for Waves 1 07a reflected in manual Strain gauge P sensor option capability Power consumption accuracy data format and sample timing for strain gauge are different from quartz version Real time output wave statistics capability calculating significant wave height etc with new prompt in SetSampling command Each tide data record in memory now includes date time previously tide times were calculated in Convert Hex from the wave burst time stamps EEPROM includes C calibration coefficients allowing real time tide data output of conductivity S m instead of frequency Hz as well as salinity psu Real time wave burst data now output in psia instead of frequencies in Hz Add Send Last sample commands SL SLO to allow query while logging Correct T specs resolution 0 001 C accuracy 0 01C was 0 01C resolution 0 02 C accuracy which were based on old 26 and are invalid Add specification information on scaling pressure accuracy resolution etc for any pressure range Add expand information on sample timing Add explicit instructions on setup if interested in just tides or just waves
2. X P PTCAO PTCAI T PTCA2 T N X PTCBO PTCBO PTCB1 T PTCB2 T pressure psia slope correction PAO PA1 N PA2 N POffset offset correction where PAO PAI PA2 PTCAO PTCA1 PTCA2 PTCBO PTCB1 PTCB2 PTempA0O PTempA1 PTempA2 and POffset are entered in the 26plus EEPROM at the factory using the calibration coefficient commands and are read by Convert Hex from the uploaded hex file header in the DC command response Slope and offset corrections are read from the Convert Hex calibration coefficients psa file 114 Manual version 018 Appendix Ill Data Formats SBE 26plus Example no conductivity from sample file above 000000000000000000 flag beginning of wave burst 091B60080200000000 time of beginning of wave burst number of samples in burst 000005000000000000 pressure temperature compensation number number of samples in burst 18FD5B18FD64 wave burst pressure data em oe wave burst pressure data 18FDCF18FDD5 wave burst pressure data FFFFFFFFFFFFFFFFFF flag end of wave burst Pressure temperature compensation amp number of samples 000005000000000000 hex Pressure temperature compensation 00000500 hex 1280 decimal Pressure temperature compensation PTC pressure temperature compensation number 1000 1280 1000 1 28 Pressure number for first wave burst pressure data first 3 bytes 18FD5B hex 1637723 decimal Pressure P
3. Ripe ne JAR0734 Directory and file name for output data Name append is added to output file name before extension For example if processing Click Start Process to begin Not processing X wb with a Name append of Wave output processing data Status field files are testWave was testWave rpt shows Processing complete testWave wts etc when done tart Process Exit Cancel Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit Make the desired selections 65 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus 2 Click on the Data Setup tab The Data Setup tab looks like this li Xx You may have used Plan Deployment to determine desired value see Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance fr Process Wave Burst Data Average temperature and salinity used to Fle Options Help calculate density required for wave statistics algorithm File Setup Data Setup Height of pressure sensor from bottom meters High frequency cutoff for processing wave data fmax is smaller of Average wate
4. 004 07 05 Seasoft for Waves 1 11 Battery and Memory Endurance module now can output lithium DD battery endurance as well as alkaline Add lithium DD battery capacity information cover plate for lithium DDs Update connector information for wet pluggables now using water block version Remove 80290 alkaline drop in battery pack not offering for 26plus Add pressure sensor maintenance section Add weight of titanium version Correct equation for W in Wave Burst data with Quartz P section of Appendix HI Data Formats Update conductivity cell cleaning to correspond to revised application note 2D Update discussion of ini file with calibration coefficients Update AF24173 Anti Foulant Device appendix to current label 005 07 05 Firmware 6 0a optional 6 pin connector for RS 422 485 full duplex interface 006 02 06 Firmware version 6 1a added Datetime Seasoft Waves 1 13 Update SeatermW to describe new DateTime menu Add information on upload time 3 5 hours for 32 MB in binary at 115 200 baud Add Recovery section with information about relieving internal pressure if you suspect instrument is flooded 007 05 06 Remove high range pressure sensor and titanium housing options and add high accuracy T sensor and RS 485 options corresponding to changes in price list 008 10 06 Remove information about Quartzonix pressure sensor no longer offering it Standard pressure sen
5. Pa m x horizontal distance m Z instrument depth m Basic Linear Wave Description A traveling disturbance of the sea surface is commonly represented as a linear simple harmonic wave traveling in the x horizontal direction A x t a cos kx ot 1 Mean water level Seafloor Simple Harmonic Linear Wave Traveling on the Sea Surface 128 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Phase Angle The phase angle represents a shift of the wave relative to some reference time This is useful for describing the relationships between a group of waves of different frequencies When a time series is separated by spectral analysis methods into frequency components defined by 1 the two numbers that are computed for each frequency are amplitude a f phase o f The physical time lag associated with a given phase depends on the wave period T For example a phase of z radians implies a time lag of 5 seconds for a wave with a period of 10 seconds T 10 sec while the same phase implies a lag of 2 5 sec for a wave with T 5 sec Dispersion Equation For surface gravity waves described by 1 there is a special relationship between wave period and wave length This relationship which depends on water depth is called the dispersion relation and is given by o gk tanh kh 2 Implications of Linear Theory Equation 1 represents a single frequency wavenumber
6. 5471 range 45 psia tide measurement interval 5 000 minutes duration 120 seconds xmeasure waves every 3 tide samples 512 wave samples burst at 4 00 scans sec duration 128 seconds logging start time do not use start time logging stop time do not use stop time tide samples day 288 000 wave bursts day 96 000 memory endurance 218 6 days nominal alkaline battery endurance 94 9 days total recorded tide measurements 36 total recorded wave bursts 12 tide measurements since last start 36 wave bursts since last start 12 transmit real time tide data NO transmit real time wave burst data NO transmit real time wave statistics NO status stopped by user xlogging NO send start command to begin logging S gt DC Pressure coefficients 05 feb 04 K PAO 7 912454e 02 POEs nse os more pressure sensor calibration coefficients OFFSET 0 00 Temperature coefficients 05 jan 04 TAO 2 993769e 04 K TA1 2 397817e 04 x TA2 8 392026e 07 ia TA3 1 319386e 07 S gt DD Note FFFFFFFFFBFFFFFFFF flag beginning of tide parameters If you uploaded data in 091B5D370000000000 time of beginning of first tide sample binary SeatermW sent 012C00010000000000 tide sample interval wave integration period DBbaud b e instead of DD FFFFFFFFFCFFFFFFFF flag end of tide parameters However the uploaded hex 3FC29478FB091B5D37 tide data pressure temperature a
7. Wave integration time seconds Number of points in the wave burst Number of spectral estimates for each frequency band Water depth meters Pressure sensor depth meters Density kg m Chi squared confidence interval percent Multiplier for Chi squared lower bound Multiplier for Chi squared upper bound VVVVVVVVVVV e Second line contains in order gt Number of frequency bands calculated gt Frequency of first frequency band Hz gt Interval between frequency bands delta f Hz gt Total variance meters gt Total energy joules meters gt Significant period seconds frequency band with greatest variance gt Significant wave height meters 4 x sqrt total variance e Third and following lines until next line with Values beginning with the first frequency for the Auto Spectral density function lt Gaa gt Units are meters Hz To obtain the variance m in a frequency interval f Hz multiply the value of lt Gaa gt by f 117 Manual version 018 Appendix Ill Data Formats SBE 26plus Wave Burst Auto Spectrum Report rpt extension A rpt file is created from the wb file in Process Wave Burst Data A sample wave burst Auto Spectrum report file is shown below surface wave processing summary file aprl2sp wb temperature 15 000 salinity 33 000 density 1024 431 number of points per wave burst 1028 sample period 1 00 sec burst 1 mean pressure 21 207 p
8. depth corrected pressure average density gravity See Appendix VII Pressure to Depth Conversion 63 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus Section 8 Wave Data Processing Process Wave Burst Data and Create Reports Seasoft for Waves includes two wave data processing modules which are Notes covered in this section e See Appendix VI Wave Theory and Statistics for bathe d eee oe the calculations e Process Wave Burst Data Compute wave statistics from an input wb made by Seasoft wave burst file Output was statistics and results from auto spectrum for Waves analysis rpt summary report wts statistics from surface wave zero The 26plus can also be crossing analysis wt surface wave time series and wss Fast Fourier programmed to output real Transform coefficients time wave statistics See Command Descriptions in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW e Create Reports Create r26 file with one line of surface wave time series and or wave burst auto spectrum statistics for each processed wave burst from input was and wts files Process Wave Burst Data Process Wave Burst Data computes wave statistics from an input wb wave burst file created in Convert Hex Process Wave Burst Data outputs three or optionally four or five files e Statistics and results from auto spectrum analysis
9. e Real time wave data is output if TxWave Y e Real time wave statistics is output if you set TXWAVESTATS yY in the SetSampling prompt Each time a tide measurement is completed the display looks like this if the DS response shows transmit real time tide data YES real time tide data was enabled with TxTide Y Tide start time 21 Nov 2004 13 40 01 p 14 2135 tide duration is 10 minutes pt 21 952 t 21 0250 c 4 81952 s 34 3799 the first tide data displays where 10 minutes after logging starts start time start of tide measurement p calculated and stored pressure psia pt calculated pressure temperature not stored C t calculated and stored temperature C c calculated and stored conductivity S m and s calculated salinity not stored psu Note that c and s display only if DS response shows conductivity YES conductivity acquisition was enabled with Conductivity Y Note Each tide measurement record displays after the tide duration is complete For example if the 102 Manual version 018 Appendix Ill Data Formats SBE 26plus Each time a wave measurement is made the display looks like this if the DS response shows transmit real time wave burst data YES real time wave data transmission was enabled with TxWave Y wave start time 21 Nov 2004 13 43 13 wave ptfreq 172046 343 or wave ptRaw 1 278 14 5599 14 5598 14 5597 14 5598 wave end wave burst
10. jpg or bmp The selected format overrides the selection you made in the Plot Data View Options menu Print Range for wave time series and auto spectrum plots Print plots for several wave bursts for the series that is displayed on screen In the dialog box select the wave burst print range Orientation and size are as selected in the Plot Data View Options menu Plots output to your system s default printer to output to a different printer you must select a new default printer before you select Print Range File Range for wave time series and auto spectrum plots Output to file the plots for several wave bursts for the series that is displayed on screen in the selected format wmf jpg or bmp In the dialog boxes select the wave burst file output range and the desired directory and output file name Directory and file name selections override selections you made in Plot Data and in the Plot Data View Options menu 77 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus Options Sets up defaults for how the plot is output to the printer file or clipboard e Print gt Orientation landscape portrait or printer driver default If driver default is selected orientation is determined by the default for the printer you select in Output Print if printing a single plot or the system default printer if printing multiple plots using Output Print Range gt Print full page If selec
11. pressure number 8 1637723 8 204715 375 Using calibration coefficients from uploaded hex file PAO 7 912454e 02 PA 7 317688e 05 PA2 1 012808e 12 PTCAO 3 446204e 02 PTCA 1 4 617518e 01 PTCA2 1 236197e 01 PTCBO 2 488438e 01 PTCB1 2 275000e 03 PTCB2 0 000000e 00 PTempA0 8 059255e 01 PTempA1 8 183057e 01 PTempA2 1 878352e 00 POffset 0 Pressure temperature T PTempA0 PTempA1 PTC PTempA2 PTC 8 059255e 01 8 183057e 01 1 28 1 878352 1 28 80 59255 104 7431296 3 0774919168 21 073 X P PTCAO PTCAI T PTCA2 T 204715 375 3 446204e 02 4 617518e 01 21 073 1 236197e 01 21 073 a 205398 704 N X PTCBO PTCBO PTCBI T PTCB2 T 205398 704 2 488438e 01 2 488438e 01 2 275000e 03 21 073 0 21 073 2 205003 753 pressure slope correction PAO PA1 N PA2 N POffset offset correction For this example assume slope correction 1 0 and offset correction 0 pressure 7 912454e 02 7 317688e 05 205003 753 1 012808e 12 205003 753 14 880 psia 115 Manual version 018 Appendix Ill Data Formats SBE 26plus Tide Data Format tid extension A tid file is created from the hex file in Convert Hex A sample tide data tid file is shown below 1 11 13 92 10 27 16 14 8125 22 102 3 55682 23 909 2 11 13 92 10 28 16 15 0086 14 818 3 48032 27 844 3
12. 0 is the mean of the time series and is 0 since the subsurface pressure time series has been de meaned The interval between spectral estimates resolution bandwidth is df 1 T 1 Not 13 where dt is the time interval between samples in the subsurface pressure time series While N raw spectral estimates are computed only the first N 2 1 are unique For a real input time series the second N 2 1 values are identical to the first N 2 values The limiting frequency is the Nyquist frequency given by Nyquist 1 26t Hz 14 The forward Fourier transform of the time series is defined by Zj 1 N x exp i2anj N 15 n 0 where Z the raw spectral estimates are complex numbers i 1 1 2 The raw spectral estimates are directly related to the single frequency wave described in 1 a 2 Z j arg Zj 16 The variance at each frequency is varj Zj 7 j 1 N 1 17 The total variance of the spectrum N 1 varoa 2 Zl Pa 18 j l is equal to the variance calculated from the time series 28 For each frequency up to the Nyquist the relationship between the single pressure wave variance 1 and 17 is aj 2 2 var 19 134 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Once the Fourier transform has been obtained the Fourier coefficients for the frequencies greater than fmax and less than fmin are typically set to 0 0 fmax minimum of frequenc
13. 1 Insert the CD in your CD drive 2 Install the software Double click on SeasoftWaves_V _ exe _ is the software version Follow the dialog box directions to install the software The default location for the software is c Program Files Sea Bird SeasoftWaves Extract Tide When you install Seasoft for Waves ExtractTide exe is automatically installed in the same location 19 Manual version 018 Section 3 Software Installation and Use SBE 26plus Seasoft for Waves Use Start Seasoft for Waves by double clicking on SeasoftWavesLaunch exe The main screen looks like this iol xi EE Seasoft for Waves a Run Help 1 Plan Deployment 2 Battery and Memory Endurance 3 Seaterm 4 Convert HEX 5 Merge Barometric Pressure 6 Process Wave Burst Data 7 Create Reports 8 Plot Data Exit The Run menu lists each program module Module Type Module Name Module Description Calculate ratio of pressure amplitude measured by instrument to pressure Pre deployment Plan Deployment amplitude at surface Predict number of planine frequency bands calculated width of each See Section d band and frequency span Battery and Calculate nominal battery and Memory memory endurance for user specified Endurance sampling scheme Terminal program SeatermW Send commands for status data acquisition See Section 5 setup diagnostics and data upload Data conversion See Section 6 Conv
14. 15 minutes 900 sec tide duration 5 minutes 300 sec 512 samples wave burst at 0 25 sec sample 512 x 0 25 128 sec every 2 tide measurements Calculate real time wave statistics on 512 samples wave burst 512 x 0 06 sec calculation 30 7 sec required at end of wave burst Set SetStartTime to 12 00 00 Checking setup tide duration 300 sec lt tide interval 10 sec 900 10 890 sec wave burst duration real time wave statistics 128 30 7 159 sec lt tide interval tide duration 10 sec 900 300 10 590 sec Time Time Begin End Wave End Wave Time Stamp Begin P for End P for BeginT amp C EndT amp C Stamp Wave Burst amp Begin Statistic for Tide Tide for Tide for Tide for Wave Burst Wave Statistic Calculation Tide Burst Calculation 12 00 00 1 1 E 3 a 12 05 00 1 1 2 z z 7 12 05 02 s 1 z a p 12 15 00 2 2 z a 12 20 00 2 2 P z z z 12 20 02 2 1 1 F 12 22 10 a a 3 1 5 12 22 41 2 s gt a 1 12 30 00 3 3 z z A 12 35 00 3 3 2 7 3 F 12 35 02 3 x 2 z 12 45 00 4 4 R S 2 z 12 50 00 4 4 a 5 A 12 50 02 4 2 2 12 52 10 5 z 2 z 12 52 41 2 z 3 7 2 2 2 100 Manual version 018 Appendix Il Sample Timing SBE 26plus Note epee As shown forthis sche
15. CKC Certification Services LLC Notified Body 0976 the undersigned hereby declare that the equipment specified above conforms to the above European Union Directives and St Authorized Signature Name Title of Signatory President Date 27 June 2012 Place Bellevue WA Manual version 018 Table of Contents SBE 26plus Limited Liability Statement ccssscsssessssssssesssscsssssssssssssssesssesssesseseees 2 Declaration of Conformity scssccssccssessssssecsssssssssssssessesssssssesesseessseseees 3 Pable 0f Contents i 5 50icc ssnstsessessonseosentonasosteaconssoveuasonssssenneonasesenseswsnSovesennssventevs 4 Section T MNtroduchOM oo ssincsssscesvessocnacssvncvenessassosacsdenesvessevesssssavavenpacenssessoseonss 7 About this M nus cain tes tie nenna nn testte anon rita ttbon cunts E 7 QUICK Start AREE AEE SE te Sod GeO se ea eek RE a OSS 7 Unpacking SBE 26718 s mne nene wn dante ide dees EE a r ube 8 Section 2 Description Of SBE 26p1US ssccsscsssessscssessssssssesscesssesssseseceseeee 9 System Description cvs ccs dececes cass E E sauce ERE EREE a E Ei ESERE AiR 9 Specifications e en r i EE E E REE Tn EA 11 Dimensions and End Cap Conmectors ccccccscecsseesseeseeeseeeeceeeceneeeeenseenseenaes 13 Cables and Wirt eorom a E wate one wie ene ten See 14 Power Supply nnne E aeons E tien tient aan 16 External Power and Cable Length 0 ccccccceceseesseeceeeeeeeceerceeeeseeneeneenae
16. Enable conductivity logging if optional conductivity sensor included x N Do not x user defined string Displays in DS reply TxTide x x Y Transmit real time tide data x N Do not TxWave x x Y Transmit real time wave data Note See SetSampling to transmit real time wave Statistics x N Do not QS Enter quiescent sleep state Main power turned off memory retention unaffected Wave and Tide Setup Initialize Logging Reset Memory SetSampling or SetSample InitLogging Set tide and wave sampling parameters e Tide interval 1 720 minutes e Tide duration 10 43 200 seconds e Number of tide measurements between wave bursts 1 10 000 e Wave samples burst multiple of 4 4 60 000 Set to power of 2 and minimum of 512 for meaningful wave statistics Wave sample duration 0 25 0 5 0 75 or 1 second e At receipt of Start start logging at SetStartTime or immediately e Stop logging at SetStopTime or wait for user to send Stop e Calculate and output real time wave statistics If yes 26plus prompts for real time wave statistics parameters After all data uploaded send this before starting to sample to make entire memory available for recording If not sent data stored after last sample TideCount x x tide sample number for first tide measurement when sampling begins Use to recover data if you accidentally initialize logging before A
17. FFFFFFFFFFFFFFFFFF flag end of wave burst 3FB8BE6D77091CB3D5 tide data pressure temperature and time 3FB8DA6DBD091CB501 tide data pressure temperature and time 3FB9826E01091CB62D tide data pressure temperature and time 000000000000000000 flag beginning of wave burst 104 Note If you uploaded data in binary SeatermW sent DBbaud b e instead of DD However the uploaded hex file always shows the DD command so the file looks exactly the same regardless of whether ASCII or binary upload was used Manual version 018 Appendix Ill Data Formats SBE 26plus The beginning of a sample hex file for a 26p us with Quartz pressure sensor and with conductivity follows beginning of file with DS and DC response same as shown above except DS response shows conductivity YES the calculated memory endurance and battery endurance in DS response is reduced and DC response shows conductivity coefficients in addition to pressure and temperature coefficients S gt DD FFFFFFFFFFFFFFFBFFFFFFFF 091B5BA70000000000000000 012C00010000000000000000 FFFFFFFFFFFFFFFCFFFFFFFF 3FF42973A0000000091B5BA7 3FF59573D6000000091B5CD3 3FF674740E000000091B5DFF 000000000000000000000000 091B5E790200000000000000 029B92F40000000000000000 87CAA787CAA1 87CA9387CAA1 FREFFFFFFFFFFFFFFFEEEEEE 3FF71C743F000000091B5F2B 3FF8F77472000000091B6057 3FF9BB74A6000000091B6183 000000000000000000000000 flag beginning of tide parameter
18. Net Contents Two anti foulant devices Sea Bird Electronics Inc EPA Registration No 74489 1 13431 NE 20 Street EPA Establishment No 74489 WA 1 Bellevue WA 98005 123 Manual version 018 Appendix V AF24173 Anti Foulant Device SBE 26plus AF24173 Anti Foulant Device FOR USE ONLY IN SEA BIRD ELECTRONICS CONDUCTIVITY SENSORS TO CONTROL THE GROWTH OF AQUATIC ORGANISMS WITHIN ELECTRONIC CONDUCTIVITY SENSORS ACTIVE INGREDIENT Bis tributyltin OxXide 0 cee ce cece cence ce ence eee eee res 53 0 OTHER INGREDIENTS sA niea ec ee eeececeene ene ia 47 0 KE ENTE N AA SA EE AE TE E T 100 0 DANGER See Precautionary Statements for additional information FIRST AID If on skin or Take off contaminated clothing clothing Rinse skin immediately with plenty of water for15 20 minutes Call a poison control center or doctor for treatment advice If swallowed Call poison control center or doctor immediately for treatment advice Have person drink several glasses of water Do not induce vomiting Do not give anything by mouth to an unconscious person If in eyes Hold eye open and rinse slowly and gently with water for 15 20 minutes Remove contact lenses if present after the first 5 minutes then continue rinsing eye Call a poison control center or doctor for treatment advice HOT LINE NUMBER Have the product container or label with you when calling a poison control center or doctor or going for treatment For furt
19. Section 11 Troubleshooting seeseeseseseseseeeoeseeeesseeoesoesereoeseseoeseeoesoeeeesonsesee 88 Problem 1 Unable to Communicate with SBE 26plus esssssesseeseseserseeseree 88 Problem 2 Nonsense or Unreasonable Uploaded Data csccsecsseesteesteenes 89 Problem 3 Nonsense or Unreasonable Real Time Data c scceseceseeseeeteennes 89 GIOSSATY A EET T 90 Appendix I Command Summary s sssessesseossesssesssessoeesoescoesoosseossessesssesssesecse 92 Appendix II Sample Timing eseeseeseeseseesoeseseoeseroeseeecesoesereoeseseoreeeoesoseersoesee 95 General Sample Timing Notes ccccsccssccseesseeeeeseeeeeeeeeseeceseeeeenseenseenseenaes 95 Sample Timing with Quartz Pressure Sensol ccsccesececeeeeeseeeseeteeeneeeneeees 95 Sample Timing with Strain Gauge Pressure Sensor 99 Appendix IIT Data Formats cccssecsesssscsessssssssssessesssessesscessseseeseees 102 Real Time Data Format cap extension cccceeseesceseceteeeseeeseceeeeeeseenes 102 Hex Data Format with Quartz Pressure Sensor hex extension 6 104 Setup Parameters and Tide Data with Quartz Pressure 00008 106 Wave Burst Data with Quartz Pressure cccccccsseeseeeeeseeeeeeteeeteensees 108 Hex Data Format with Strain Gauge Pressure Sensor hex extension 110 Setup Parameters and Tide Data with Strain Gauge Pressure 112 Wave Burst Data with Strain Gauge Press
20. Tide for Tide for Tide for Wave Burst Wave Statistic Calculation Tide Burst Calculation 12 00 00 1 1 12 15 00 2 2 1 1 12 15 02 1 1 1 12 19 18 1 12 19 49 1 12 30 00 3 3 2 2 12 30 02 2 12 45 00 4 4 3 3 12 45 02 3 2 2 12 49 18 2 12 49 49 2 13 00 00 5 5 4 4 96 Manual version 018 Appendix Il Sample Timin SBE 26plus Tide duration Tide interval 2 sec T amp C measurement e If tide duration lt tide interval 20 seconds and wave burst duration real time wave statistics calculation lt tide interval tide duration 20 seconds Wave burst sampling is done after the applicable tide measurement For example if the 26p us is set up to sample a wave burst every 2 tide measurements the first wave burst starts 2 seconds after the second tide measurement is complete See Quartz Example 2 Tide duration Tide interval 2 sec T amp C measurement gt 18 sec Wave Real time duration nei wave samples burst SSCS calculation wave sample duration Quartz Example 2 Tide interval 15 minutes 900 sec tide duration 5 minutes 300 sec 512 samples wave burst at 0 25 sec sample 512 x 0 25 128 sec every 2 tide measurements if selected Calculate real ti
21. all flags and tide data are 12 bytes 24 Hex characters FFFFFFFFFFFFFFFBFFFFFFFF Flag start of 1 FFFFFFFFFBFFFFFFFF Flag start of setup parameters setup parameters 091 B0510000000000 First 4 bytes is start time 091B5BA70000000000000000 First 4 bytes is start time tide samples so there are 3 tide records lines 5 to 7 before wave burst flag 2 seconds since January 1 2000 of integration of first seconds since January 1 2000 of integration of first tide sample Remaining bytes are 0 s tide sample Remaining bytes are 0 s 012C00010000000000 First 2 bytes 012c is tide 012c00010000000000000000 First 2 bytes 012C is 3 sample interval seconds next 2 bytes 0001 is tide sample interval seconds next 2 bytes 0001 is number of 0 25 second periods to integrate wave number of 0 25 second periods to integrate wave samples Remaining bytes are 0 s samples Remaining bytes are 0 s FFFFFFFFFFFFFFFCFFFFFFFF Flag end of 4 lprrrFFFFFCFFFFFFFF Flag end of setup parameters setup parameters 3FF42973A0000000091B5Ba7 Tide record pressure 3FB78A6CA4091CB051 Tide record pressure temperature conductivity and time First 3 bytes temperature and time First 3 bytes 3FB78a is 3FF429 is pressure number next 2 bytes 73a0 is 5 pressure number next 2 bytes 6ca4 is temperature temperature number next 3 bytes 000000 is number and last 4 bytes 091cB051 is s
22. bends and movement of the is not applicable to the SBE 4M which is intended for use as a electrodes can damage the cell moored instrument e Do not store the SBE 4M with water in the conductivity cell Freezing temperatures for example in Arctic environments or during air shipment can break the cell if it is full of water 84 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Sensor Calibration Note After recalibration of the pressure temperature and or optional conductivity sensor Sea Bird enters the new calibration coefficients in the 26plus EEPROM and ships the instrument back to the user with Calibration Certificates showing the new coefficients For the conductivity sensor Sea Bird also provides the user with an updated psa file for use in Convert Hex Note Although the pressure sensor manufacturer can re calibrate the pressure sensor by duplicating the original procedures the sensor must be removed from the 26plus the cost is relatively high and lead times can be considerable Sea Bird sensors are calibrated by subjecting them to known physical conditions and measuring the sensor responses Coefficients are then computed which may be used with appropriate algorithms to obtain engineering units The pressure temperature and optional conductivity sensors on the SBE 26plus are supplied fully calibrated with coefficients printed on their
23. where e start time start of wave measurement e ptfreq pressure temperature frequency Hz displays only for 26p us with Quartz pressure sensor e ptRaw calculated pressure temperature number displays only for 26p us with Strain Gauge pressure sensor e Remaining displayed values are calculated and stored pressures psia Each time a wave burst is completed the display looks like this if the DS response shows transmit real time wave statistics YES real time wave statistics was enabled with TXWAVESTATS yY in the SetSampling command prompt Auto Spectrum Statistics nAvgBand 5 total variance 1 7509e 08 total energy 1 7137e 04 significant period 4 2667e 01 significant wave height 5 2928e 04 Note Sample output shown assumes youset Show progress messages ninthe SetSampling prompt Time Series Statistics Wave integration time 128 Number of waves 0 Total variance 1 6868e 08 Total energy 1 6512e 04 Average wave height 0 0000e 00 Average wave period 0 0000e 00 Maximum wave height 5 9477e 04 Significant wave height 0 0000e 00 Significant wave period 0 0000e 00 H1 10 0 0000e 00 H1 100 0 0000e 00 Note See Appendix VI Wave Theory and where Statistics for a description of calculation e Auto Spectrum Statistics f of wave statistics nAvgBand user input number of spectral estimates for each frequency band and next 4 lines are calculated not st
24. 10 Routine Maintenance and Calibration SBE 26plus Calculating Slope and Offset using a Dead Weight Pressure Generator Tests show that room temperature derived slope and offset corrections to the initial quartz calibration can account for long term drift to within less than 0 01 of the sensor s full scale range To perform this correction 1 Use a suitable dead weight pressure generator to subject the sensor to increments of known pressures The end cap s 5 16 24 straight thread permits mechanical connection to a pressure source Use a fitting that has an o ring face seal such as Swagelok 200 1 OR See Application Note 12 1 Pressure Port Oil Refill Procedure amp Nylon Capillary Fitting Replacement 2 In SeatermW connect to the 26plus 3 Quartz pressure sensor Send FR to display the pressure and pressure sensor temperature compensation frequencies Click Stop to end the test Compute pressure in psia from the frequencies with the formula shown on the calibration sheet 4 Strain Gauge pressure sensor Send TS a number of times to measure pressure as well as pressure temperature and optional conductivity and transmit converted data in engineering units pressure in psia 5 Enter the calculated slope and offset positive or negative in Convert Hex s Coefficient Configuration dialog box Pressure Slope and Offset Correction Example Quartz Pressure Sensor A 45 psia sensor has drifted and its responses are low as shown bel
25. 25 second periods to integrate wave samples Remaining bytes are 0 s FFFFFFFFFFFFFFFCFFFFFFFF Flag end of setup parameters 3FC29478FB091B5D37 Tide record pressure temperature and time First 3 bytes 3Fc294 is 3F9A816E50000000091CAFE7 Tide record pressure temperature conductivity and time First 3 bytes 3F9A81 is pressure number next 2 bytes 650 is 3 tide samples so there are 3 tide records lines 5 to 7 before wave burst flag 5 pressure number next 2 bytes 78FB is temperature temperature number next 3 bytes 000000 is number and last 4 bytes 09185D37 is start time of tide conductivity number and last 4 bytes 091CAFE7 Imeasurement seconds since January 1 2000 is start time of tide measurement seconds since January 1 2000 3F 9BF36EC1000000091CB113 Tide record pressure 3FC3AE7940091B5E63 Tide record pressure temperature conductivity and time First 3 bytes temperature and time First 3 bytes 3FC3AE is 3F9BF3 is pressure number next 2 bytes 6ECc1 is 6 pressure number next 2 bytes 7940 is temperature temperature number next 3 bytes 000000 is number and last 4 bytes 0918563 is start time of tide conductivity number and last 4 bytes 091cB113 is start Imeasurement seconds since January 1 2000 time of tide measurement seconds since January 1 2000 3F9D136F47000000091CB23F Tide record pressure 3FC4F77981091B5F8F Tide record pressure tem
26. 53 Timing 95 Triton 91 Troubleshooting 48 Troubleshooting 88 U Unpacking 8 Updates 19 Upload 47 56 V Versions 144 Manual version 018 Index SBE 26plus W Wave Burst Data 64 Wave data 116 Wave data auto spectrum report 118 Wave data auto spectrum statistics 117 Wave data plotting 72 Wave data processing 58 64 68 Wave data surface wave time series gt 120 Wave data time series statistics 119 Wave data wave burst statistics 120 Wave setup 39 Waves only 52 Wiring 14 148
27. 56 for information on RS 485 adapters and converters 145 Manual version 018 Index SBE 26plus Index A Anti Foulant Devices 123 B Barometric pressure 61 Batteries 16 replacing 80 Battery and Memory Endurance 24 Battery endurance 24 Baud 37 Baud rate 17 18 C Cable length 18 Cables 14 Calibration 85 Calibration coefficients 50 Calibration coefficients 85 CE certification 3 Cleaning 79 84 Commands baud 37 calibration coefficients 50 conductivity 37 data upload 47 56 date and time 37 descriptions 33 diagnostic 48 general setup 37 initialize logging 43 logging 44 memory upload 47 56 polled sampling 46 real time data 38 40 reset memory 43 send last sample 46 start and stop 40 44 status 35 summary 92 temperature 37 testing 48 tide setup 39 troubleshooting 48 upload 47 56 wave setup 39 Communication defaults 29 Conductivity 37 Conductivity sensor maintenance 84 conductivity sensor calibration 87 Connector 79 Connectors 13 Convert Hex 58 Corrosion precautions 79 Create Reports 68 D Data format 21 102 cap 102 hex 104 110 146 126 120 pt 118 tid 116 was 117 wb 116 wt 120 wts 119 converted data 116 Quartz 104 strain gauge 110 surface wave time series 120 tide data 116 uploaded data 104 110 wave auto spectrum report 118 wave aut
28. 887020e 003 2 995481e 003 4 263404e 003 1 317504e 003 3 054346e 003 1 688730e 003 2 141096e 003 1 688405e 003 3 960159e 003 1 314685e 003 1 714741le 003 1 393692e 003 1 332473e 003 3 300501e 004 5 239898e 004 3 741254e 004 1 336304e 003 5 561366e 004 6 184441e 004 8 887792e 004 4 510226e 004 5 383913e 004 4 866397e 004 1 003825e 003 5 819744e 004 7 742675e 004 1 622945e 003 9 336277e 004 1 39724978 1 00 1024 10 6 378 5 178 1024 211 90 0 637 1 843 1 5 371094e 003 9 765625e 003 6 2661e 003 6 2937e 001 1 0732e 001 3 1663e 001 399138e 003 4 958530e 003 5 970532e 003 5 397915e 003 676770e 003 2 406614e 002 292470e 002 224974e 002 823480e 002 086449e 001 7 481066e 002 684431e 002 948858e 002 2 912741le 002 3 741619e 002 336472e 002 254591e 002 218159e 002 780615e 002 395502e 003 833613e 003 3 936535e 003 5 881464e 003 571996e 003 4 163474e 003 3 601095e 003 585647e 003 531514e 003 174772e 003 760068e 004 8 005655e 004 4 464863e 004 4 575676e 003 835893e 003 114426e 003 469032e 003 335585e 003 808380e 004 5 716856e 004 775679e 004 299268e 003 614029e 004 6 163178e 004 628755e 003 4 645250e 003 934834e 003 147523e 004 181183e 004 855911e 004 327592e 004 AWrAIOWWPEBNM OND 5 2 3 4 1 2 9 5 443738e 003 5 2 6 6 4 1 e First line flags the beginning of the data for a wave burst Line contains in order Wave burst number Start of wave burst seconds since January 1 2000
29. Bird Electronics Inc 13431 NE 20 Street Bellevue WA 98005 USA DECLARATION OF CONFORMITY Manufacturer s Name Sea Bird Electronics Manufacturer s Address 13431 NE 20 Street Bellevue WA 98005 USA The Authorized Representative located within the Community is OTT MESSTECHNIK GmbH amp Co KG P O Box 2140 87411 Kempten Germany Ludwigstrasse 16 87437 Kempten Internet http www ott com Phone 49 831 5617 100 Fax 49 831 5617 209 Device Description Various Data Acquisition Devices and Sensors Model Numbers 3S 3F 3plus 4C 4M 5T 5P 5M 7 8 9plus 11plus 14 16plus V2 16plus IM V2 17plus V2 18 19plus V2 21 25plus 26plus 29 32 32C 32SC 33 35 35RT 36 37 IM 37 SMP 37 SM 37 SIP 38 39 39 IM 41CP 43 43F 44 49 50 52 MP 53BPR 54 55 56 63 ICC IMM PDIM AFM 90488 90204 90402 90504 Glider Payload CTD NiMH Battery Charger and Battery Pack Applicable EU Directives Machinery Directive 98 37 EC EMC Directive 2004 108 EC Low Voltage Directive 73 23 EEC as amended by 93 68 EEC Applicable Harmonized Standards EN 61326 1 2006 Class A Electrical Equipment for Measurement Control and Laboratory Use EMC Requirement Part 1 General Requirements EN 55011 2007 Group 1 Class A EN 61010 1 2001 Safety Requirements for Electrical Equipments for Measurement Control and Laboratory Use Part 1 General Requirements Declaration based upon compliance to the Essential Requirements and Letter of Opinion from
30. C Clocks Real Time Clock for Quartz tide pressure data Quartz TCXO watch crystal type 32 768 Hz accuracy 2 ppm 5 seconds month Battery backed for minimum of 2 year operation without the main batteries installed Memory 32 MB Flash RAM If conductivity not enabled Bytes day 9N W 36 3M If conductivity enabled Bytes day 12N W 48 3M Data Storage N tide samples day W wave bursts day M wave measurements burst Quiescent sleep 0 0005 watt Communications 0 10 watt Data Upload 0 16 watt Wave Burst oa Wave burst 0 11 watt ave burst 0 11 wa Regni emeni Real time wave statistics 0 2 watt 0 06 sec sample of samples burst 26plus with h t Tide Sample Se K Pressure sensor integration 0 01 watt FESSUTE Turn on for each sample if going to sleep between samples Sensor 0 30 watt seconds 0 30 joules Tide sample including temperature but not conductivity 0 30 watt seconds 0 30 joules Conductivity sample 0 40 watt seconds 0 40 joules Quiescent sleep 0 0005 watt Communications 0 13 watt Power Data Upload 0 19 watt Requirement Wave Burst 26plus with Wave burst 0 14 watt Strain Gauge Real time wave statistics 0 2 watt 0 06 sec sample of samples burst Note Ti i Pressure ide Sample See Section 4 Pre iy A Sensor Turn on off for each tide sample 0 36 watt seconds 0 36 joules Deployment Planning GAA etic Tide s
31. M offset correction where e pressure number is the first 3 bytes 6 characters of the tide data Tide and Wave Files Extract converted from Hex to decimal Tide and Convert Hex e slope and offset corrections are read from the Convert Hex calibration coefficients psa file Note that the pressure number already includes the effect of the offset entered in the 26p us EEPROM with the POffset command e Mand B are scaling parameters that depend on pressure sensor range They are calculated by the 26plus and are read by Convert Hex from the uploaded hex file header in the DC response temperature C temperature number 1000 10 where e temperature number is the next 2 bytes 4 characters of the tide data converted from Hex to decimal conductivity frequency Hz conductivity number 256 where e Conductivity number is the next 3 bytes 6 characters of the tide data converted from Hex to decimal Conductivity frequency is converted to conductivity using the coefficients and equation found on the calibration certificate for the sensor These coefficients are entered in the 26p us EEPROM at the factory using the calibration coefficient commands and are read by Convert Hex from the uploaded hex file header in the DC response time time number number of seconds since January 1 2000 e Time is the last 4 bytes 8 characters of the tide data converted from Hex to decimal Example 1 no conduc
32. Seagauge Wave and Tide Recorder It is organized to guide the user from installation through operation data collection and processing We have included detailed specifications command descriptions maintenance and calibration information and helpful notes throughout the manual Sea Bird welcomes suggestions for new features and enhancements of our products and or documentation Please contact us with any comments or suggestions seabird seabird com or 425 643 9866 Our business hours are Monday through Friday 0800 to 1700 Pacific Standard Time 1600 to 0100 Universal Time in winter and 0800 to 1700 Pacific Daylight Time 1500 to 0000 Universal Time the rest of the year Follow these steps to get a Quick Start using the SBE 26plus The manual provides step by step details for performing each task Deployment 1 Run Plan Deployment and Battery and Memory Endurance to determine sampling parameters Section 4 2 Install new batteries 3 Connect 26p us to computer and run SeatermW Section 5 A Ensure all data has been uploaded and then send InitLogging to make entire memory available for recording if desired B Set date and time SetTime and wave and tide sampling parameters SetSampling enable conductivity if SBE 4M conductivity sensor is installed Conductivity Y enable external thermistor if optional external thermistor installed ExternalTemperature Y C Check status DS and calibration coefficients DC D St
33. VII Pressure to Depth Conversion SBE 26plus Appendix VII Pressure to Depth Conversion Force is mass acceleration units are Newtons N N Kg m sec Density p is mass volume units are Kg m This is the in situ value and is approximately 1025 Kg m at the surface Specific weight W is weight volume units are N m W p g where g local gravity m sec Hydrostatic equation P PamtW z Patm atmospheric pressure in Pascals N m p total pressure in Pascals N m W is average density times gravity N m z depth m Conversions 1 Pascal 10 decibars 1 psi 0 6894757 decibars Example average density 1025 kg m average gravity 9 8 m sec pressure reading 6000 decibars 6 x 10 Pascals atmospheric pressure 14 7 psia 1 013529 x 10 Pascals W 1025 9 8 10045 N m 6x 10 1 013529 x 10 10045 z z 5 989865 x 10 7 10045 5963 031 meters 140 Manual version 018 Appendix VIII References SBE 26plus Appendix VIII References Textbooks Bendat J S and A G Piersol 1986 Random Data Analysis and Measurement Procedures 2 edition Wiley NewYork ISBN 0 471 04000 2 Bevington P R 1969 Data Reduction and Error Analysis for the Physical Sciences McGraw Hill New York Freund J E 1962 Mathematical Statistics Prentice Hall EngleWood Cliffs N J LeBlond P H and L A Mysak 1978 Waves in the Ocean Elsevie
34. beginning of wave burst 20000 000 000g Ogon nodots Flag Deg inninga wave burst 091CB3220200000000 First 4 bytes 091CB322 is start 091B5E790200000000000000 First 4 bytes 091B5E79 2 time seconds since January 1 2000 of wave burst is start time seconds since January 1 2000 of wave Next byte 02 is MSB of number of samples in burst Next byte 02 is MSB of number of samples in wave burst Remaining bytes are 0 s wave burst Remaining bytes are 0 s 029B83E80000000000 First 4 bytes 02988358 is 029B92F40000000000000000 First 4 bytes 029B92F4 pressure temperature compensation number Next byte lis pressure temperature compensation number Next 3 00 is LSB of number of samples in wave burst byte 00 is LSB of number of samples in wave burst For example shown number of samples in wave burst For example shown number of samples in wave burst 0200 Hex 512 decimal Remaining bytes are 0 s 0200 Hex 512 decimal Remaining bytes are 0 s 87CED887CED6 First 3 bytes 87CED8 is pressure 87CAA787CAAI1 First 3 bytes 87CAA7 is pressure number for first wave measurement last 3 bytes number for first wave measurement last 3 bytes 4and 87cED6 is pressure number for second wave 87CAA1 is pressure number for second wave following lmeasurement Each subsequent line also contains data measurement Each subsequent line also contains data for 2 wave measurements There are a total of for 2 wave measurements There
35. compromise the seal When remating 1 Lightly lubricate the inside of the dummy plug cable connector with silicone grease DC 4 or equivalent 2 Standard Connector Install the plug cable connector aligning the raised bump on the side of the plug cable connector with the large pin pin 1 ground on the 26p us Remove any trapped air by burping or gently squeezing the plug connector near the top and moving your fingers toward the endcap OR MCBH Connector Install the plug cable connector aligning the pins 3 Place the locking sleeve over the plug cable connector Tighten the locking sleeve finger tight only Do not overtighten the locking sleeve and do not use a wrench or pliers Verify that a cable or dummy plug is installed for each connector on the system before deployment 79 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Battery Replacement The SBE 26plus uses 12 alkaline D cells Duracell MN1300 LR20 or 6 lithium DD cells Electrochem BCX85 3B76 TC dropped into the Alkaline D cell battery compartment MN1300 LR20 Leave the batteries in place when storing the 26p us to prevent depletion of the back up lithium batteries by the real time clock Even exhausted main batteries power the clock less than 25 microamperes almost indefinitely If the 26plus is to be stored for long periods replace the batteries yearly to prevent battery leakage which could damage the 26plus
36. differently from pure borosilicate glass Sea Bird can test your cell and calculate Cpcor Alternatively test the cell by comparing computed salinity to the salinity of water samples from a range of depths calculated using an AutoSal Enter the value for slope default 1 0 in the SBE 26p us EEPROM to make small corrections for conductivity sensor drift between calibrations Corrected conductivity slope computed conductivity where slope true conductivity span instrument conductivity span Conductivity Slope and Offset Correction Example At true conductivity 3 5 S m instrument reading 3 49965 S m Calculating the slope Slope 3 5 3 49965 1 0001000100010001000100010001 The primary mechanism for calibration drift in conductivity sensors is the fouling of the cell by chemical or biological deposits Fouling changes the cell geometry resulting in a shift in cell constant slope of the calibration curve typically resulting in lower conductivity readings over time Offset error error at 0 S m is usually due to electronics drift and is typically less than 0 0001 S m per year Because offsets greater than 0 0002 S m are a symptom of sensor malfunction Sea Bird recommends that drift corrections be made by assuming no offset error unless there is strong evidence to the contrary or a special need The most important determinant of long term sensor accuracy is the cleanliness of the cell We recommend that the cond
37. e Auto range Plot Data selects axis Minimum and Maximum vV Auto range Minimum jo 0000 values number of Major divisions on axis and number Maximum fi 0 0000 of Minor divisions between Major divisions Auto divisions Major a e Auto divisions Plot Data selects number of major Minor i divisions on axis and number of minor divisions between major divisions User selects axis Minimum and Maximum values Any values that fall outside user selected Minimum to Maximum Start Process D Caa range will plot at minimum or maximum as applicable Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes Click Start Process to begin processing data Status field shows Processing complete when done If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit 74 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus The X Axis tab looks like this for Auto Spectrum inixi Fie Options Help File Setup Plot Setup X Aris Y Axis 1 EEES A a type u e Auto Spectrum frequency Hz Variable Frequency Hz If selected confidence intervals Plot Style Overlay 2D Overlay 3D e Overlay 2D 2D plot of frequency and and burst parameters displ
38. file Default process all bursts Start Process Return to Seasoft for Waves window Begin processing Status field on File Setup e If Confirm Program Setup Change was selected in Options menu If you made tab shows Processing complete when done changes and did not Save or Save As program asks if you want to save changes e f Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit Make the desired selections and click Start Process to process the data 3 The Verify Setup dialog box appears erify Setup x 2 Surface wave processing summary SF temperature 0 000 salinity 35 000 density 1028 106 number of points per wave burst 1024 sample period 1 00 sec sample minimum period 0 00 sec sample maximum period 1e 006 sec mean pressure 14 597 psia instrument depth 0 000 meters total water depth 0 000 meters hanning window cutoff 0 1000 auto spectrum 5 spectral estimates per band 102 bands calculated each band is 0 005 Hz wide Frequency span 0 003 to 0 496 Hz Is Setup OK The dialog box summarizes data from the input wb file and user inputs from the Data Setup tab and shows calculated values for density number of bands band width and frequency span Review the summary click Yes to process data 66 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create R
39. file by Convert Hex Also file format for tide data that has had barometric pressure removed by Merge Barometric Pressure Statistics and results from auto spectrum analysis created by Process Wave Burst Data Wave measurements in engineering units created from uploaded hex file by Convert Hex wmf Windows metafile graphics file created by Plot Data Fast Fourier Transform coefficients created by Process Wave bp Burst Data if selected wt Surface wave time series created by Process Wave Burst Data g if selected ite Statistics from surface wave zero crossing analysis created by Process Wave Burst Data See Appendix III Data Formats for details on the format of each file 21 Manual version 018 _ Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance This section covers e Planning the required wave burst parameters and placement of the SBE 26plus using the Plan Deployment module in Seasoft for Waves e Calculating battery and memory endurance for the desired sampling scheme using the Battery and Memory Endurance module in Seasoft for Waves Plan Deployment Note See Appendix VI Wave Theory and Statistics for a detailed discussion of the theory and equations for wave calculations of wave samples per burst
40. for 1 DB 9S data I O cable optional RS 422 RS 485 interface 2 4 m 8 ft long 17043 Locking sleeve Locks T O cable or dummy plug 2 in place 171192 Locking sleeve wet Locks I O cable or dummy plug 2 pluggable connector in place 17045 1 3 pin RMG 3FS dummy For when optional conductivity I plug with locking sleeve sensor not used 3 pin MCDC 3 F 171500 1 wet pluggable For when optional conductivity 1 dummy plug with sensor not used locking sleeve 17046 1 4 pin RMG 4FS dummy For RS 232 I O connector during 1 plug with locking sleeve deployment 4 pin MCDC 4 F 171398 1 wet pluggable For RS 232 I O connector during 1 dummy plug with deployment locking sleeve 17047 1 6 pin AG 206 dummy For RS 422 RS 485 I O connector 1 plug with locking sleeve during deployment For use with optional conductivity 801542 AF24173 sensor Bis tributyltin oxide device 1 Anti Foulant Device inserted into anti foulant set of 2 device cup in mount kit A i Mounts on ends of conductivity cell 50315 E r device Ito hold AF24173 Anti Foulant 1 Devices Octyl Phenol Ethoxylate Reagent grade non ionic cleaning solution for S ere conductivity cell supplied in 100 strength dilute as directed 50102 Mounting fixture Optional mounting fixture with 1 mooring lock pin 143 Manual version 018 Appendix X Manual Revision Histo SBE 26plus Appendix X Manual Revision History Manual Version Date Description
41. for Waves 013 08 09 e Correct dimensional drawing for 26plus not installed in mounting fixture battery end cap end has padeye instead of flat bar 014 02 10 e Update anti foul label in Appendix with new Container Handling requirement and new address e Update SBE address e Add CE mark 015 09 11 e Seasoft for Waves version 2 0 Convert Hex dialog box change SeatermW menu change Connect and Configure are now submenus of Communications menu e Update recommended minimum system requirements for installing software add information about compatibility with Windows 7 Remove references to Druck pressure sensors can be supplied by other manufacturers Add Stability to specifications Update website URL for Triton Correct typos 016 12 11 Correct RS 485 pin out callouts for data I O end cap connector 017 12 12 e Firmware version 7 1 add new commands SLT send last tide SLWT send last wave time series statistics and SLWS send last wave auto spectrum statistics must set TxWaveStats y to get valid data from SLWT and SLWS e Add Declaration of Conformity e Add cable drawing for RS 232 interface 018 04 13 e Update drawing to show longer housing length for 26p us with 1000 psia Digiquartz pressure sensor e Add more drawings cable to conductivity sensor IO cable for RS 422 485 internal wiring e Add wet pluggable RS 422 485 cable to replacement parts list e Add reference to Application Note
42. important for synchronizing sampling among multiple instruments See Setting Time in SBE 26plus to Synchronize Sampling of Multiple Instruments x baud rate for general communication 600 1200 2400 4800 9600 19200 or 38400 Default 9600 x Y 26plus has optional high accuracy external thermistor x N 26plus has standard internal thermistor Default x Y Enable conductivity logging if 26plus has optional SBE 4M conductivity sensor x N Disable conductivity logging x user defined string that displays in status DS reply Up to 59 characters including spaces 26p us drops any characters after 59 No carriage returns allowed Allows user to include information describing deployment conditions etc as permanent part of data set because DS reply is included in uploaded hex file when SeatermW s Upload is used to upload data see Uploading Data from Memory Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus General Setup Commands continued Notes e Seasoft for Waves data processing modules cannot process real time tide or wave data from the 26plus e TxWave Y does not control output of real time wave Statistics To output real time wave statistics use SetSampling and respond to the TXWAVESTATS prompt with Y TxTide x TxWave x Qs 38 x Y Transmit real time tide data while logging Does not affect storing data to m
43. maximum allowable value as appropriate tide measurement duration seconds 30 new value Length of tide measurement 26plus integrates over this time counting signal continuously and computing average pressure Range 10 43 200 sec 12 hours With Quartz pressure If tide duration lt tide interval 20 sec 26plus goes to sleep between tide samples and wakes up and latches power onto pressure sensor 10 sec before start of next tide sample If tide duration gt tide interval 20 sec tide duration is set to tide interval and 26plus samples tides continuously With Strain Gauge pressure 26plus always goes to sleep between measurements If tide duration gt tide interval 10 sec tide duration is set to tide interval 10 sec measure wave burst after every N tide samples N 4 new value Wave burst is sampled every N tide interval Range 1 10 000 number of wave samples per burst multiple of 4 512 new value Number of measurements wave burst If entered number is not multiple of 4 26plus rounds down to make it multiple of 4 Range 4 60 000 To calculate wave statistics on uploaded data Sea Bird recommends following for meaningful valid results wave samples burst gt 512 and waye samples burst power of 2 512 1024 etc wave sample duration 0 25 0 5 0 75 1 0 seconds 1 new value This parameter can be used to reduce wave burst sampling rate and incr
44. new command is not received within 2 minutes after completion of a command the 26plus returns to quiescent sleep state and the display indicates time out If in quiescent state re establish communications by clicking Connect or pressing the Enter key to get an S gt prompt The 26p us cannot have samples with different tide sample scan lengths more or fewer data fields per sample in memory If the scan length is changed the 26p us must initialize logging Initializing logging sets the tide sample number and wave sample number to 0 so the entire memory is available for recording data with the new scan length Initializing logging should only be performed after all previous data has been uploaded Conductivity which enables disables acquisition and storing of optional conductivity data changes the scan length Therefore Conductivity prompts the user for verification before executing to prevent accidental overwriting of existing data The 26plus does not respond at all while making a wave burst measurement If you need to establish communications during a wave burst press the Esc key or click Stop to interrupt the wave burst this interrupts the current wave burst but does not stop logging The 26p us will fill out the remaining data in the interrupted wave burst with 0 s 26plus with Quartz Pressure Sensor The 26plus responds only to DS DC QS SL SLO and Stop while making a tide measurement If you wake up the 26p us while i
45. oa Frequency Span Hz 0 0215 0 3340 Pressure ae f a VS Wave Period ee ee eel al Pressure attenuation is wave pressure amplitude measured by instrument divided by wave pressure amplitude at surface 0 0 25 5 0 7 5 10 0 12 5 15 0 176 20 0 22 5 25 0 Wave Period seconds Example Water depth is 10 meters You are interested in measuring waves with frequencies up to 0 36 Hz period 1 0 36 2 8 seconds You plan to sample waves 4 times per second wave sample duration 0 25 seconds with 1024 samples wave burst and to process data with 10 spectral estimates band Can you place the 26p us at 1 meter above the bottom and accomplish your goals Running Plan Deployment with the above parameters see dialog box above the Frequency Span is 0 0215 to 0 3340 Hz Since 0 3340 lt 0 36 you cannot accomplish your goals Iterating on a solution by changing the instrument height in Plan Deployment you find that placing the 26p us at 2 5 meters above bottom will allow you to measure the desired frequencies Alternatively you could consider modifying other sampling parameters while maintaining the instrument height 23 Manual version 018 Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus Battery and Memory Endurance Power and memory endurance calculations for the SBE 26plus are complex and Note are dependent on the sampling scheme Use Battery and Memory E
46. period seconds Number of points in the wave burst Height of pressure sensor above bottom Water density VVVVV e Column heading line and data Data varies depending on user selected variables to be output 120 Manual version 018 Appendix IV Electronics Disassembly Reassembl SBE 26plus Appendix IV Electronics Disassembly Reassembly Jackscrew kit Sea Bird provides a jackscrew kit with the SBE 26plus to assist in removal of the connector end cap The kit contains 2 Allen wrenches 3 jackscrews 2 spare plastic socket hex head screws Disassembly CAUTION Disconnect and dismount the optional SBE 4M conductivity cell from the 26plus before disassembly to avoid breaking the conductivity cell Plastic hex head screw typical 3 places Titanium hex head screw typical 4 places Establish communications with the 26plus see Section 5 SBE 26plus Setup Installation and Data Upload SeatermW for details As a precaution click Upload to upload any data in memory before beginning Wipe the outside of the end cap and housing dry being careful to remove any water at the seam between them Remove the four titanium hex head screws securing the connector end cap to the housing Remove the three plastic hex head screws from the end cap using the larger Allen wrench Insert the three jackscrews in these three holes in the end cap When you begin to feel resistance use the smaller Allen wre
47. powered real time clock with an accuracy of 5 seconds month Wave burst measurements are made with a period counter with its time base generated from a temperature compensated precision quartz crystal oscillator For the 26plus with Strain Gauge pressure sensor a 24 bit A D converter digitizes the output of the pressure sensor for the wave and tide measurements The standard 26plus includes e Plastic housing for depths to 600 meters 1960 ft e 20 meter 45 psia Digiquartz temperature compensated pressure sensor e Accurate temperature sensor aged thermistor embedded in end cap e Frequency input channel and bulkhead connector for optional SBE 4M conductivity sensor 32 MB FLASH memory e RS 232 interface e 12 alkaline D cell batteries Duracell MN1300 LR20 battery compartment is separated from electronics by a moisture proof seal e Impulse glass reinforced epoxy bulkhead connectors 26plus options include e Digiquartz temperature compensated pressure sensor in ranges from 0 2 to 680 meters 15 to 1000 psia e Strain gauge pressure sensor with a temperature compensated strain gauge element in ranges from 20 to 600 meters 45 to 880 psia e SBE 4M conductivity sensor interfaced via bulkhead connector and clamped to SBE 26plus housing SBE 4M comes equipped with expendable AF24173 Anti Foulant Devices e High accuracy external temperature sensor 0 002 C accuracy 0 0001 C resolution in place of standard inter
48. real time wave statistics See Section 5 SBE 26plus Setup Installation and Data Upload The SBE 26plus can transmit data at up to 38 400 baud over up to 1200 meters SeatermW for command details of twisted pair wire cable 26 AWG or smaller gauge larger diameter If using external power see External When uploading data higher baud rates for binary upload 57 600 and 115 200 Power and Cable Length above for baud may not work with long cables power limitations on cable length Real Time Data Acquisition Real time data tides waves and or wave statistics can be acquired by clicking Capture in SeatermW before you begin logging The data displayed in SeatermW will be saved to the designated file Process the data as desired Note that this file cannot be processed by Seasoft for Waves as it does not have the required headers and format for Sea Bird s processing software 18 Manual version 018 Section 3 Software Installation and Use SBE 26plus Section 3 Software Installation and Use Notes e Help files provide detailed information on Seasoft for Waves e Seasoft for Waves data processing modules cannot process real time data from the 26plus e Sea Bird supplies the current version of our software when you purchase an instrument As software revisions occur we post the revised software on our FTP site See our website www seabird com for the latest software version number a description of the sof
49. real time wave statistics calculation gt tide interval tide duration 20 seconds Wave burst sampling is done during the applicable tide measurement and for that tide the tide duration is set to the tide interval 26plus does not go to sleep for that tide See Quartz Example 3 the tide interval Consequently do not use this scheme if you want tide pressure and T and C data at regular intervals Tide interval Tide interval Tide duration Tide duration Tide interval 2 sec T amp C Wave duration gt 20 sec measurement 4 Real time for first tide wave samples burst wave 2 sec wave sample duration statistics T amp C measurement calculation if selected for second tide Quartz Example 3 Tide interval 15 minutes 900 sec tide duration 2 minutes 120 sec Wave burst of 1024 samples at 0 75 sec sample 1024 x 0 75 768 sec 12 minutes 48 seconds every 2 tide measurements Calculate real time wave statistics on 512 samples wave burst 512 x 0 06 sec calculation 30 7 sec required at end of wave burst Set SetStartTime to 12 00 00 Checking setup tide duration 120 sec lt tide interval 20 sec 900 20 880 sec wave burst duration real time wave statistics 768 30 7 799 sec gt tide interval tide duration 20 sec 900 120 20 760 sec Time Time Begin End Wave End Wave Time Stamp Begin P for End P
50. respective Calibration Certificates in manual We recommend that the 26p us be returned to Sea Bird for calibration Pressure Sensor Calibration The pressure sensor is capable of meeting the 26plus error specification with some allowance for aging and ambient temperature induced drift The pressure sensor coefficients are entered into the 26p us EEPROM with the calibration coefficient commands The coefficients can be viewed using DC in SeatermW Values for slope default 1 0 and offset default 0 0 can be entered in Convert Hex s Coefficient Configuration dialog box to make small post deployment corrections for sensor drift Note that the offset entered in Convert Hex is in addition to the offset entered in the 26p us EEPROM Techniques are provided below for making small corrections using the slope and offset terms by comparing 26p us pressure output to e Readings from a barometer e Readings from a dead weight pressure generator provides more accurate results but requires equipment that may not be readily available Before using either of these procedures allow the 26p us to equilibrate with power on in a reasonably constant temperature environment for at least 5 hours before starting Pressure sensors exhibit a transient change in their output in response to changes in their environmental temperature Sea Bird instruments are constructed to minimize this by thermally decoupling the sensor from the body of the instrument H
51. since last start 5 wave bursts since last start 1 1 Double click on ExtractTide exe The dialog box looks like this memory Click Select HEX file to search for file or type in Select HEX file Waiting to Extract Extract Tide Records Status bar path and file name C Documents and SettingsWan12 hex 2 Click Extract Tide Records to process the data when completed the Status bar shows Finished x files created where x is the number of logging sessions in the uploaded data Extract Tide creates a separate file for each time logging was started with 1 2 etc appended to the file name For example if there are 3 logging sessions recorded in Jan12 hex the output file names will be Jan12 1 hex Jan12 2 hex and Jan12 3 hex Run Convert Hex on each file created by Extract Tide 58 Manual version 018 Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex SBE 26plus Convert Hex Notes f e If the uploaded file includes data Convert Hex converts uploaded hex hex data into separate wave wb and from multiple logging sessions run tide tid files with data in ASCII engineering units Convert Hex must be run Extract Tide before Convert Hex before further processing by Seasoft for Waves e The first time you run Convert Hex the Coefficients dialog box Step 2 i below appears first 1 In Seasoft for Waves Run menu select Convert Hex The dialog box looks lik
52. stable time base quartz pressure sensor precision thermometer and an optional SBE 4M conductivity sensor to provide wave and tide recording and real time data of unprecedented resolution and accuracy e For tide and water level monitoring the pressure sensor output is integrated to average out wave action The user programmable tide interval can be set from minute to 12 hours The 26p us can continuously measure pressure if equipped with Quartz pressure sensor or can conserve battery power by measuring pressure for only a portion of the tide interval with the pressure sensor not drawing power for the remainder of the interval The tide integration duration is programmable from 10 seconds to the entire user programmable tide interval High accuracy temperature information is recorded with each tide measurement As an option an SBE 4M conductivity sensor can be integrated for recording conductivity data with each tide measurement Tide data is always recorded in memory in addition real time tide data can be output e Waves are characterized by burst sampling with the number of samples per burst burst interval and burst integration time programmed by the user Wave data is always recorded in memory in addition real time wave data and or real time wave statistics can be output The 26plus is self contained in a rugged non corroding plastic housing 600 meter depth rating After recovery and without opening the housing the recor
53. time at the beginning of the wave burst Sample Timing with Quartz Pressure Sensor Tide interval If tide duration gt tide interval 20 sec tide duration is set to tide interval and the 26p us samples tides continuously Tide interval Pe a G Tide duration Tide duration PES 2 sec T amp C measurement 2 sec T amp C measurement for first tide for second tide Tide interval Tide duration If tide duration lt tide interval 20 sec 26plus goes to sleep between tide samples and wakes up and latches power onto the pressure sensor 10 sec before the start of the next tide sample Tide interval Tide duration 2 sec T amp C measurement Aa Sleep gt 8 sec 2 sec Sleep gt 8 sec T amp C measurement 95 Manual version 018 Appendix Il Sample Timing SBE 26plus Note aal uh Sis Sea Bird recommends the following for wave burst duration real time wave Statistics calculation gt tide interval 20 sec meaningful wave statistics the 26plus increases the tide interval so that e Wave samples burst gt 512 and wave burst duration real time wave statistics calculation tide interval 20 sec e Wave samples burst power of 2 Note that real time wave statistics can be calculated on a subset of the total 512 1024 etc number of wave samples burst the real time statistics calculation requires 0 06 sec wave sample to be processed The drawing only shows the relationship betw
54. to a was file e Summary report from auto spectrum analysis to a rpt file Statistics from surface wave zero crossing analysis to a wts file optional Surface wave time series to a wt file optional Fast Fourier Transform coefficients to a wss file 64 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus Process wave data as follows Note SeasoftWaves ini contains the location and file name of the last saved psa file for each module SeasoftWaves ini is stored in USERPROFILE Local Settings Apps Sea Bird Example C Documents and Settings 1 In Seasoft for Waves Run menu select Process Wave Burst Data dbresko Local Settings Apps Sea Bird The File Setup tab looks like this ZE Process Wave Burst Data loj x File Options Help File Setuy File to store all information input in File P Das Setup Setup and Data Setup tabs Open to Program setup file select a different psa file Save or Save As to save current settings or Restore I data SBE 26 DATAM O07 4 Process Wave26 psa t t all setti t tch last d o a E E Open Save Save As Restore Directory and file name for wave wb data Select to pick different file Input directory I data s BE26 DATASIOO74 Select one Wave WB input file JARO794 WB Select Output directory I data SBE 26 DATAM 0074 Select Name append
55. was on land 4 842998 14 843070 14 843125 14 843025 so the output is indicating 4 843079 14 842952 14 842998 14 842970 essentially 0 wave height remaining data for first wave burst x 1 52876606 0 25 512 4 844642 14 844933 14 844914 14 844851 4 844942 14 844914 14 844969 14 844787 4 844833 14 844887 14 844860 14 844887 remaining data for second wave burst e First line flags beginning of data for a wave burst Line contains in order Wave burst number Start of wave burst measurement seconds since January 1 2000 Wave integration period seconds Number of points in wave burst VVVV e Second and following lines until next line with Measured pressures in psia with four values per line 116 Manual version 018 Appendix Ill Data Formats SBE 26plus Wave Burst Auto Spectrum Statistics was extension A was file is created from the wb file in Process Wave Burst Data A sample wave burst Auto Spectrum statistics file is shown below SBE 26plus 0 39714178 1 00 1024 10 5 666 4 466 1024 211 90 0 637 1 843 51 5 371094e 003 9 765625e 003 5 9946e 003 6 0210e 001 1 0732e 001 3 0970e 001 3 091334e 003 3 298001le 003 2 160857e 003 7 776975e 004 5 304750e 003 3 731420e 003 1 790720e 002 2 439886e 002 8 326155e 002 1 082657e 001 5 056803e 002 5 299359e 002 2 502890e 002 2 332787e 002 2 122386e 002 1 846813e 002 3 559706e 002 3 633030e 002 2 943071e 002 8 796323e 003 8 000838e 003 4 111465e 003 2 995502e 003 6
56. watts 0 06 sec sample 512 samples burst 6 14 joules wave burst Total statistics day 6 14 joules wave burst 4 wave bursts day 24 6 joules day Alkaline battery capacity 756 000 joules 0 85 derate for safety 642 600 joules Derating 5 per year for battery self discharge 0 05 642 600 joules 365 days per year 88 joules day Total power consumption 392 joules day 650 joules day 25 joules day 88 joules day 1155 joules day Number of days of battery capacity 642 600 joules 1155 joules day 556 days 1 52 years As a check compare with the output of Battery and Memory Endurance on the 26plus Strain tab the program shows the same results The program calculated that the memory endurance is 676 days 1 85 years which is not the limiting factor in deployment length for this sampling scheme see Memory Endurance for example calculation 26 Manual version 018 Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus Memory Endurance The SBE 26plus comes standard with a 32 MB memory Memory used for storing logged data is If conductivity is not enabled Bytes day 9N W 36 3M If conductivity is enabled Bytes day 12N W 48 3M where N number of tide samples day W number of wave bursts day M number of wave measurements burst Example 26plus with conductivity sensor Measure tides every 60 minutes 1 hour 24 hours 24 measurements day Meas
57. wave sample duration length of each sample in burst Note If planning to calculate wave statistics Sea Bird recommends the following for meaningful valid results e Samples per burst gt 512 and e Samples per burst power of 2 for example 512 1024 etc Plan Deployment solves the wave dispersion relation to calculate and plot the pressure attenuation ratio Pressure attenuation ratio pressure amplitude measured by 26plus pressure amplitude at surface given water depth meters height of pressure sensor above bottom meters wave period seconds Pressure attenuation with depth is a strong function of the wave period short period waves are attenuated much faster with depth than longer period waves This implies that for a pressure sensor deployed at a fixed depth z there is a high frequency cut off fmax for which waves with f gt fmax are not measurable Above the high frequency cut off any noise in the subsurface pressure record is mapped by the transfer function into unrealistic surface wave height values The default high frequency cutoff fmax for processing wave data in Process Wave Burst Data is the frequency where the ratio of pressure measured by the 26plus to pressure at the surface is less than 0 0025 wave sample duration Frequencies greater than fmax are typically not processed by Process Wave Burst Data Plan Deployment also predicts these surface wave analysis parameters e number of frequ
58. wave time series is typically very irregular due to the random nature of the sea surface the calculation of wave heights and periods can only be approximate and statistical A standard method for estimating wave heights and wave periods is summarized in the Handbook on Wave Analysis and Forecasting from the World Meteorological Organization WMO No 446 1976 Geneva Switzerland and illustrated below mean level Zero Crossing Method for Estimating Wave Heights and Periods from a Wave Time Series Individual waves are isolated by identifying the zero upcrossings H and T for each captured wave is stored in an array Averaging over all the captured waves yields the average wave height Hse meters and the average period Tvg seconds H nax 1S the largest captured wave 138 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Sea State Significant Wave Height The significant wave height H_ and average period T yg define the sea state H is the average height of the highest 1 3 of the waves and has physical significance because it is the approximate wave height picked out visually and reported by trained observers at sea T 3 is obtained by picking out the highest 1 3 of the captured waves and averaging their periods The parameters H_ and H 9 are similarly defined as the average height of the highest 10 and 1 percent of the captured waves respectively 139 Manual version 018 Appendix
59. 0 0410 0 0653 From Specifications upload power required is 0 16 watt for 26p us with Quartz pressure or 0 19 watt for 26p us with Strain Gauge pressure Conservatively use 0 20 watts for both and use 12 V minimum input voltage to calculate I V watts I 0 20 watts 12V 0 017 amps Example 1 For 20 gauge wire what is maximum distance to transmit power to 26plus if transmitting real time data For upload current R jimit V iimit 1 volt 0 017 amps 58 8 ohms For 20 gauge wire resistance is 0 0107 ohms foot Maximum cable length 58 8 ohms 0 0107 ohms foot 5495 feet 1675 meters Example 2 Same as above but there are 4 instruments powered from the same power supply For 60 milliamp communications current R jimit V timit 1 volt 0 017 amps 4 instruments 14 7 ohms Maximum cable length 14 7 ohms 0 0107 ohms foot 1373 feet 418 meters to 26p us furthest from power source 16 Manual version 018 Section 2 Description of SBE 26p us SBE 26plus Supplying Enough Power to SBE 26plus Another consideration in determining maximum cable length is supplying enough power at the power source so that sufficient voltage is available after IR loss in the cable to power the SBE 26plus externally Power required for the conductivity measurement is 0 3 watt for 26p us with Quartz pressure or 0 33 watt for 26p us with Strain Gauge pressure conservatively use 0 33 watts for both If not integrati
60. 0 sec 900 180 10 710 sec Time Begin End Begin End Time Begin End Stamp P P Tec rec Samp Begin End Wave Wave Time for for for for for for Wave Wave Statistic Statistic Tide Tide Tide Tide Tide Wave Burst Burst Calculation Calculation Burst 12 00 00 1 1 7 E z z E a 12 03 00 E 1 1 z z E 12 03 02 2 2 1 R a i 12 15 00 2 1 1 z z 12 27 48 E 2 3 R 1 N _ 12 27 50 e 2 2 i E 1 12 28 21 z z 7 7 1 12 30 00 3 3 z 5 z z z 3 12 33 00 z 3 3 z z s 7 J 12 33 02 z 3 F z x 12 45 00 4 2 2 A z E 12 57 48 2 4 z S 2 12 57 50 4 z 2 z 12 58 21 z E z F 2 13 00 00 5 5 2 z z 2 Notes for Strain Gauge Example 2 e A separate tide measurement is not made during a tide interval that includes a wave burst the value reported for that tide is the average of the measurements taken over the entire wave burst e Note the large variation in T amp C timing and in the length of the tide pressure measurement using this scheme 101 Manual version 018 Appendix Ill Data Formats SBE 26plus Appendix Ill Data Formats This appendix provides detailed information on data format for each file type except as noted Extension Description cap Capture file of real time data from 26plus Hex data uploaded from 2
61. 00 or P DBbaud b e 115200 from byte b to e First byte is 0 Can upload up to 500 000 bytes at one time ByteCount Display total number of bytes in memory Take 1 sample of pressure pressure TS temperature temperature and conductivity and output converted data Take 1 sample of pressure pressure TSR temperature temperature and conductivity and output raw data Sample temperature and output converted TT data 26plus runs continuously drawing current Press Esc key or click Stop to stop test Sample temperature and output raw data TTR 26plus runs continuously drawing current Press Esc key or click Stop to stop test Diagnostic Measure and output frequencies quartz data from these pressure quartz pressure temperature and tests not stored in FR conductivity 26plus runs continuously FLASH memory drawing current Press Esc key or click Stop to stop test Measure and output e main battery voltage 11 18 e back up lithium battery voltage 4 8187 VR e operating current mA 20 04 e ground voltage 26plus runs continuously drawing current Press Esc key or click Stop to stop test FlashInit Map bad blocks and erase FLASH memory destroying all data Display number of good blocks in FlashGood FLASH memory Calibration DC Display sensor calibration coefficients Coefficients PCalDate S S pressure calibration date F floating point PU0 F F quartz pressure UQ number S string PY1 F F quartz pressure Y1 with no space
62. 1 Start and stop logging on command user input in bold S gt SETSAMPLING Respond to prompts changing tide and wave sampling setup as desired use start time y n y new value n use stop time y n y new value n S gt START Logging will start in 10 seconds If TxTide Y tide data displays on screen If TxWave Y wave data displays on screen If TXWAVESTATS prompt in SetSampling command is Y real time wave statistics display on screen See Programming for Deployment SeatermW for a description of screen displays while logging To stop logging press Enter key several times to get S gt prompt S gt STOP Example 2 Program 26plus to start logging on 20 May 2006 12 35 00 and stop logging on 21 May 2006 12 35 00 user input in bold S gt SETSAMPLING Respond to prompts changing tide and wave sampling setup as desired use start time y n n new value y use stop time y n n new value y S gt SETSTARTTIME Set time to start logging Month 1 12 5 Day 1 31 20 Year 4 digits 2006 Hour 0 23 12 Minute 0 59 35 Second 0 59 0 S gt SETSTOPTIME Set time to stop logging Month 1 12 5 Day 1 31 21 Year 4 digits 2006 Hour 0 23 12 Minute 0 59 35 Second 0 59 0 S gt START Logging will start at 20 May 2006 12 35 00 Logging will stop at 20 May 2006 12 35 00 When logging starts If TxTide Y tide data displays on screen If TxWave Y wave data
63. 11 13 92 10 29 16 15 0836 11 242 3 07901 26 714 4 11 13 92 10 30 16 15 1536 8 951 3 07101 28 376 5 11 13 92 10 31 16 15 2267 T225 3 06788 Loe Pla e Column 1 Tide measurement number Note e Columns 2 and 3 Date and time of beginning of tide measurement If conductivity logging is not e Column 4 Measured pressure in psia enabled Conductivity N status e Column 5 Measured water temperature in C display shows conductivity e Column 6 Measured conductivity in S m NO th sixth and seventh e Column 7 Calculated salinity in PSU columns are not included in the tid file If Merge Barometric Pressure has been run on the tid file to remove the effect of barometric pressure the output tid file contains descriptive column headings The presence of headings in the tid file indicates that it has been processed by Merge Barometric Pressure Additionally Merge Barometric Pressure has the ability to replace the pressure in the fourth column with calculated water depth See Section 7 Tide Data Processing Merge Barometric Pressure for details and for the required data format for the barometric pressure bp file to input in Merge Barometric Pressure Wave Burst Data Format wb extension A wb file is created from the hex file in Convert Hex A sample wave burst data file is shown below Note SBE 26plus A p 0 52875706 0 25 512 This wave data was obtained while 4 842843 14 843052 14 842925 14 842970 the instrument
64. 110e 07 Conductivity coefficients 05 nov 2004 only if Conductivity Y CG 8 000000e 00 CH 1 483257e 00 CI 1 931111e 04 CJ 9 170722e 05 CTCOR 3 250000e 06 CPCOR 9 570000e 08 CSLOPE 1 000000e 00 Example 26plus with Strain Gauge sensor user input in bold S gt DC Pressure coefficients 15 apr 2004 PAO 7 912454e 02 PAL 7 317688e 05 PA2 1 01280e 12 PTCAO 3 446204e 02 PTCA1 4 617518e 01 PTCA2 1 236197e 01 PTCBO 2 488438e 01 PTCB1 2 275000e 03 PTCB2 0 000000e 01 PTEMPAO 8 059255e 01 PTEMPA1 8 183057e 01 PTEMPA2 1 878352e 00 M 279620 2 calculated by 26p us based on factory input pressure sensor range B 18641 3 calculated by 26p us based on factory input pressure sensor range OFFSET 0 00 psia Temperature coefficients 05 nov 2004 TAO 1 653843e 05 TAL 2 800270e 04 TA2 2 759926e 06 TA3 1 646110e 07 Conductivity coefficients 05 nov 2004 only if Conductivity Y CG 8 000000e 00 CH 1 483257e 00 CI 1 931111le 04 CJ 9 170722e 05 CTCOR 3 250000e 06 CPCOR 9 570000e 08 CSLOPE 1 000000e 00 50 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus The individual Coefficients Commands listed below are used to modify a particular coefficient or date ise Quartz Pressure COON F floa tina point Aube PCalDate S S calibration date S string with no spaces Pure EUO PY1 F
65. 13 00 00 00 36 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus General Setup Commands SetTime Set real time clock date and time 26plus prompts for desired date and time Example Set current date and time to 31 January 2006 12 35 00 user input in bold S gt SETTIME set current time month 1 12 1 day 1 31 31 year 4 digits 2006 hour 0 23 12 minute 0 59 35 second 0 59 0 Note The 26plus baud rate for general communication set with Baud must be the same as SeatermW s baud rate set in the Configure menu Note When Conductivity is sent the 26plus must initialize logging setting tide and wave sample numbers to 0 so the entire memory is available for recording data with the new scan length This should only be done after all previous data has been uploaded Therefore the 26p us requires verification when Conductivity is sent the 26p us responds this command will change the scan length and initialize FLASH memory Proceed Y N Press Y and the Enter key to proceed DateTime x Baud x ExternalTemperature x Conductivity x UserInfo x 37 x real time clock date and time mmddyyyyhhmmss Command is sent automatically when using SeatermW s DateTime menu DateTime menu provides greater accuracy in setting time than can be achieved with SetTime this may be
66. 52875089 seconds since Jan 1 2000 November 4 2004 09 18 09 Example 2 conductivity enabled from sample file above tide record 3FF42973A0000000091B5BA7 hex The first 3 bytes are 3FF429 hex 4191273 decimal For this example M 279620 2 and B 18641 3 in DC response in hex file Assume slope correction 1 0 and offset correction 0 in the psa file pressure slope correction pressure number B M offset correction pressure 1 0 4191273 18641 3 279620 2 0 14 9225 psia The next 2 bytes are 73A0 hex 29600 decimal temperature temperature number 1000 10 29600 1000 10 19 6 C The next 3 bytes are 000000 hex 0 decimal conductivity frequency Hz conductivity number 256 conductivity frequency Hz 0 256 0 Hz The last 4 bytes are 091B5BA7 hex 152787879 decimal Time 152787879 seconds since Jan 1 2000 November 3 2004 09 04 39 107 Manual version 018 Appendix Ill Data Formats SBE 26plus Wave Burst Data with Quartz Pressure Data lines from beginning to end of wave burst is described below 26plus without Conductivity 26plus with Conductivity A all wave pressure data is 6 bytes 12 Hex characters all wave pressure data is 6 bytes 12 Hex characters Line all flags and other wave data is 9 bytes all flags and other wave data is 12 bytes 18 Hex characters 24 Hex characters 1 000000000000000000 Flag
67. 6plus memory using SeatermW hex Also Hex data from multiple logging sessions split into separate files by Extract Tide Tide measurements only created from hex file by Convert Hex Also tid file output by Merge Barometric Pressure which removes barometric pressure from an input tid file Barometric pressure data used by Merge Barometric Pressure to bp remove barometric pressure from tide data tid file See Section 7 Tide Data Processing Merge Barometric Pressure for bp format wb Wave measurements only created from hex file by Convert Hex Statistics and results from auto spectrum analysis created by Process Wave Burst Data pt Summary report created by Process Wave Burst Data Fast Fourier Transform coefficients created by Process Wave Burst WSS data if Output FFT coefficients to wss file is selected Details not provided Statistics from surface wave zero crossing analysis created by Process Wave Burst Data Surface wave time series created by Process Wave Burst Data if Output surface wave time series to wt file is selected File containing one line of surface wave time series and or wave burst r26 auto spectrum statistics for each processed wave burst created by Create Reports was wts wt Real Time Data Format cap extension Real time data can be saved to a cap file if you click Capture in SeatermW e Real time tide data is output if TxTide Y
68. 8422e 01 U 2 401512e 02 U 2 305367e 02 0 05372087 0 004825600 2 304782e 02 D D1 D2 4 095400e 02 0 4 095400e 02 TO T1 T2 U T3 U T4 U 1 000 000 2 781994e 01 6 760780e 01 U 1 761829e 01 U 6 000932e 00 U 1000000 2 781994e 01 3 030610e 03 3 540221e 04 5 405284e 07 1 000 000 2 7817266e 05 W 1 0 TO TO PF PF 1 0 2 7817266e 05 2 7817266e 05 34766 843 34766 843 6 468177e 02 pressure slope correction C W 1 0 D W POffset offset correction For this example assume slope correction 1 0 and offset correction 0 pressure 2 304782e 02 6 468177e 02 1 0 4 095400e 02 6 468177e 02 14 868 psia 109 Manual version 018 Appendix Ill Data Formats SBE 26plus Hex Data Format with Strain Gauge Pressure Sensor hex extension A hex file contains hexadecimal data uploaded from SBE 26p us memory using SeatermW s Upload The beginning of a sample hex file for a 26p us with Strain Gauge pressure sensor and without conductivity follows Sea Bird SBE 26plus Data File FileName C sbe26plus StrainGaugeNoCond hex Software Version 1 07 EDS SBE 26plus V 6 1c SN 1034 10 Dec 2006 12 10 53 xuser info test file strain gauge pressure sensor serial number internal temperature sensor conductivity NO iop 7 8 ma vmain 18 4 V vlith 9 1 V last sample p 14 9320 t 21 5951
69. CE SBE 26plus Seagauge Wave and Tide Recorder Shown in optional mounting fixture User s Manual Sea Bird Electronics Inc 13431 NE 20 Street Bellevue Washington 98005 USA Telephone 1 425 643 9866 Manual Version 018 04 22 13 Fax 1 425 643 9954 Quartz Firmware Version 7 1 and later seabird seabird com Strain Gauge Firmware Version 7 1 and later www seabird com Seasoft for Waves Version 2 0and later Limited Liability Statement Extreme care should be exercised when using or servicing this equipment It should be used or serviced only by personnel with knowledge of and training in the use and maintenance of oceanographic electronic equipment SEA BIRD ELECTRONICS INC disclaims all product liability risks arising from the use or servicing of this system SEA BIRD ELECTRONICS INC has no way of controlling the use of this equipment or of choosing the personnel to operate it and therefore cannot take steps to comply with laws pertaining to product liability including laws which impose a duty to warn the user of any dangers involved in operating this equipment Therefore acceptance of this system by the customer shall be conclusively deemed to include a covenant by the customer to defend indemnify and hold SEA BIRD ELECTRONICS INC harmless from all product liability claims arising from the use or servicing of this system Manual version 018 Declaration of Conformit SBE 26plus Declaration of Conformity Sea
70. CHES SCALE ENLARGED FOR CLARITY Internal Wiring with standard RS 232 3 INCHES O RING 2 017 interface and te standard XSG yeaa connectors 1a MOLEX 17056 SCALE ENLARGED FOR CLARITY O RING 2 017 Internal Wiring DN 41186 SubConn MCBH 4 MTI 1 2 20 P N 171347 1S IRCHES 1 Internal Hi i DATA 1 0 Wiring with E Hl PIN 1 PIN 2 CT t PIN 2 PIN 3 standard BIN RS 232 a SCALE ENLARGED FOR CLARITY interface and O Ring PN 30325 2 015N674 70 optional MCBH connectors 3 INCHES SubConn MCBH 3 MTI 1 2 20 P N 171499 MOLEX 17056 _SBE4 I F O LJ SCALE ENLARGED FOR CLARITY O Ring PN 30325 2 015N674 70 15 Manual version 018 Section 2 Description of SBE 26p us SBE 26plus Power Supply The main batteries for a standard SBE 26plus are 12 D cell alkaline batteries Notes Duracell MN 1300 LR20 The 26p us can also be powered by 6 DD cell e For battery endurance calculations see Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance batteries with buttons batteries not supplied by Sea Bird The 26plus can be powered from an external 12 20 VDC source The internal The cut off voltage is 10 4 volts batteries are diode OR d with the external source so power is drawn from If the voltage falls below that the whichever voltage source is higher 26plus provides a warning
71. Equations cccscc cevc dcssctscveseicasteiecssevsheaiestivectiesseeacietseenteceedat cs 129 Implications of Linear Theory ccccescesseceeesceeseeeseeneeeeeeeeeeneeeneenaees 129 AGSUMIPLIONS lt 25 05 20265 cece fete elected EE de ccce ss E R He EE EERE E 130 Subsurface Pressure Due to Surface Gravity Waves cccccescceseceteeteeeteeees 131 High Frequency Cutoff isrener ini a eae 132 Wave Processing Steps ss 2 cccccis ceseasiecctcesgveat vecdentisdevecbevseesedestceseeasteceeaceetacss 133 Initial Processing of Pressure Data csccesecsseesseeeeeseeeeeeseenteeeteeneees 133 Surface Wave Auto Spectrum cccccccsecsceecessceeeceseceeecsseenaeeneeeaeeeneeses 134 Surface Wave Time Seriesisisis c cacsi stsecitawiviscteneaueieiensovaseeetiesness 137 Appendix VII Pressure to Depth Conversion sssccsscsssssssssssseeees 140 Appendix VIII References csssccsscesssecceccesseecssscesceeccssseseessceeeesserees 141 Appendix IX Replacement Parts sccssccssssesssssssssessssssssssesssessesees 142 Appendix X Manual Revision History cssccsscesssscssscesseeseseesseerees 144 DONG ER S case ccdstvases sedesescdestuveressaseconactees 146 Manual version 018 Section 1 Introduction SBE 26plus Section 1 Introduction This section includes a Quick Start procedure and photos of a standard SBE 26plus About this Manual Quick Start This manual is for use with the SBE 26plus
72. F Y1 PY2 F F Y2 PY3 F F Y3 PC1 F F Cl PC2 F F C2 PC3 F F C3 PD1 F F D1 PD2 F F D2 PT1 F F T1 PT2 F F T2 PT3 F F T3 PT4 F F T4 POffset F F pressure offset psia Strain Gauge Pressure PCalDate S S calibration date PAO0 F F A0 PA1 F F Al PA2 F F A2 PTCA0 F F PTCAO PTCA1 F F PTCAI PTCA2 F F PTCA2 PTCBO F F PTCBO PTCBI1 F F PTCBI PTCB2 F F PTCB2 PTempA0 F F PTempA0o PTempA1 F F PTempAl PTempA2 F F PTempA2 POffset F F pressure offset psia Temperature TCalDate S S calibration date TA0 F F A0 TA1 F F A1 TA2 F F A2 TA3 F F A3 Conductivity CCalDate S S calibration date CG F F G CH F F H CI F F 1 CJ F F J CTCor F F TCor CPCor F F PCor CSlope F F Slope correction 51 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Using SBE 26plus as a Tide Recorder Note It is not possible to completely eliminate wave measurements in the 26plus If you are not interested in wave data the SBE 26plus can be set up to minimize the number of wave measurements Respond to the prompts in the SetSampling command as follows e measure wave burst after every N tide samples Set to 10 000 which is the largest allowable number e number of wave samples per burst multiple of 4 Set to 4 which is the smallest allowable number e TXWAVESTATS real time wave statistics y n Set to N which disables calculation of real time wave statistic
73. I Upload 1 Set TideCount a where a is your estimate of number of tide samples in memory 2 Upload data If a is more than actual number of tide samples data for non existent samples will be bad random data Review uploaded data carefully and delete any bad data 3 If desired increase a and upload data again to see if there is additional valid data in memory For Binary Upload 1 Set ByteCount a where a is your estimate of number of bytes in memory 2 Upload data If a is more than actual number of bytes data for non existent samples will be bad random data Review uploaded data carefully and delete any bad data 3 If desired increase a and upload data again to see if there is additional valid data in memory InitLogging Initialize logging after all previous data has been uploaded initialize logging before starting to sample again to make entire memory available for recording InitLogging sets tide sample number and wave sample number to 0 internally If not set to 0 data will be stored after last recorded sample Do not send InitLogging until all existing data has been uploaded The following two commands are typically used only if you accidentally initialize logging before uploading the data in memory TideCount x ByteCount x 43 x sample number for first tide measurement when sampling begins Use TideCount to recover data if you accidentally initialize logging before uploadi
74. IIRI DII 1 Remove the battery end cap end cap without connectors A Wipe the outside of the end cap and housing dry being careful to remove any water at the seam between them B Remove the end cap by rotating counter clockwise use a wrench on aoe i a a the white plastic bar if necessary clockwise C Remove any water from the O ring mating surfaces inside the housing with a lint free cloth or tissue D Put the end cap aside being careful to protect the O ring from damage or contamination 2 Remove the battery cover plate from the housing A Remove the three Phillips head screws and washers from the battery cover plate inside the housing B The battery cover plate will pop out Put it aside 3 Turn the 26plus over and remove the batteries 4 Install the new batteries with the terminals against the flat battery contacts and the terminals against the spring contacts screws and washers Note Alkaline and lithium batteries require Reinstall the battery cover plate in the housing ee different cover plates because 1 lithium DD cell A Align the battery cover plate with the housing The posts inside the is shorter than 2 alkaline D cells housing are not placed symmetrically so the cover plate fits into the housing only one way Looking at the cover plate note that one screw hole is closer to the edge than the others corresponding to the post that is closest to the housing B Reinstall the three Phillips head s
75. S 422 485 B Receive 6 External Power MCBH 6M 13 13 7 cm 5 38 in Manual version 018 Section 2 Description of SBE 26plus SBE 26plus Cables and Wiring RMG Connector Cable Wiring DN 32421 PN17096 DB 9S FEMALE CONNECTOR Data I O cable PN17097 DB9 CONNECTOR HOOD for standard 1 WHITE RS 232 interface 4RED 2 BLACK si PN4 RED MCIL Wet Pluggable Connector Cable Wiring DN 32715 LOCATING PIN MCIL 4FS W LOCKING SLEEVE 1 BLACK 4 GREEN BERR esn PIN4 GREEN 2 WHITE i 3 RED AG 206 Connector Cable DN 33051 AG 206 18 6 SO PIGTAIL WITH LOCKING SLEEVE G FLS P Data I O cable for optional RS 422 RS 485 interface see Application Note PIN 2 BLACK PIN4 i PIN 3 BLUE PINS 56 Interfacing to PIN 4 ORANGE PIN 8 RS 485 Sensors for information PIN 6 RED on RS 485 adapters and converters MCIL 6FS Connector Cable DN 33661 MCIL 6FS CAROL C1310 OR EQUI PIGTAL P1 MCIL 6FS P2_DB 9S Wn LOCKING SLEEVE GSP PIN 1 WHITE PINT PIN 2 BLACK PINS BLUE PINS PIN 4 ORANGE PINS PIN 5 GREEN PIN PING RED RMG SBE 4 Cable to 26plus Wiring DN 30566 P aed W LOCKING SLEEVE RMG 3FS W LOCKING EN Conductivity sensor cable for optional SBE 4 conductivity sensor 14 Manual version 018 Section 2 Description of SBE 26plus SBE 26plus Internal Wiring DN 40609 IMPULSE XSG 4BCL HP 1 2 20 17654 15 IN
76. SBE 26plus as a Tide Recorder for guidelines If only interested in wave data see Using SBE 26plus as a Wave Recorder for guidelines With Quartz pressure sensor Time required for each wave burst wave samples burst wave sample duration time for real time statistics calculation must be lt tide interval 20 sec If the setup does not meet this requirement the 26plus increases the tide interval to meet the requirement With Strain Gauge pressure sensor Time required for each wave burst number of wave samples burst wave sample duration must be lt tide interval 10 sec If the setup does not meet this requirement the 26plus increases the tide interval to meet the requirement See Appendix Il Sample Timing for a detailed description of when tide and wave measurements are made Note Since a minimum of 512 samples burst is required for real time wave statistics calculations and this must be lt total number of samples burst the 26p us resets the total number of wave samples burst to 512 if e a smaller number is entered and e real time wave statistics is enabled see TXWAVESTATS prompt below m press Enter key To accept present value without change press Enter key 26plus prompts as follows tide interval integer minutes 30 new value Time from start of tide measurement to start of next tide measurement Range 1 720 minutes 12 hours user input outside range is set to minimum or
77. SBE 26plus QO 39714178 6 860774e 003 6 293907e 001 1 39724978 6 632170e 003 4 505061e 001 00 1024 109 5 666 4 466 1024 431 892497e 001 1 972292e 001 7 431193e 000 115848e 001 9 138889e 000 4 114119e 001 6 293907e 001 00 1024 112 6 377 5s LI7F 1024 431 662836e 001 1 914052e 001 7 223214e 000 078597e 001 9 000000e 000 3 902955e 001 4 505061e 001 e First line flags the beginning of the data for a wave burst Line contains in order Wave burst number Start of wave burst seconds since January 1 2000 Wave integration time seconds Number of points in the wave burst Number of individual waves found Water depth meters Pressure sensor depth meters Density kg m VVVVVVVV e Second line contains in order Total variance of time series meters Total energy of time series joules meters Average wave height meters Average wave period seconds VVVV e Third line contains in order Maximum wave height meters Significant wave height meters average height of largest 1 3 waves Significant period seconds average period of largest 1 3 waves Hj 19 meters average height of largest 1 10 waves If less than 10 waves H 19 is set to 0 Hy 100 meters average height of largest 1 100 waves If less than 100 waves H 199 is set to 0 Vv VV VV 119 Manual version 018 Appendix Ill Data Formats SBE 26plus Surface Wave Time Series wt extension A wt file is cr
78. SCII uploading ByteCount x x byte number for first byte when sampling begins Use to recover data if you accidentally initialize logging before binary uploading Logging Start Start logging now if use start time in SetSampling prompt is No or Start waiting to start logging if use start time in SetSampling is Yes Sto SetStartTime Stop logging now Set date and time to start logging At receipt of Start 26plus starts logging at this date and time if Use start time in SetSampling is Yes SetStopTime Set date and time to stop logging 26p us stops logging at this date and time if Use stop time in SetSampling is Yes 92 Manual version 018 Appendix Command Summary SBE 26plus Note Use the Upload menu to upload data that will be processed by Seasoft for Waves Manually entering a data upload command does not produce data in the required format for processing by Seasoft for Waves CATEGORY COMMAND DESCRIPTION Send pressure temperature and salinity from SL last tide measurement and do not go to sleep Send Last do not enter quiescent state Sample Send pressure temperature and salinity from SLO last tide measurement and go to sleep enter quiescent state DD Upload data in ASCII at baud set for general communication with Baud Upload data in binary at baud 1200 2400 Data Upload 4800 9600 19200 28800 38400 576
79. Sea Bird they can be viewed with Pressure Sensor DC and modified with calibration Slope Correction coefficient commands in SeatermW Offset Correction 0 000000 Note that offset entered here is in addition to offset shown in DC response For SBE 26plus and SBE 53 use default values if not correcting for drift during deployment Set to Default Values Save amp Exit to save updated psa file and return to Convert Hex to Wave and Tide dialog box Open to select a different psa file Save As to save updated psa file settings to a different psa file Save amp Ent Open i Saves Help Cancel Make desired changes Click OK to return to Convert Hex to Wave and Tide dialog box 59 Manual version 018 Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex SBE 26plus 3 Click Convert File to process the data The Status bar at the bottom of the dialog box shows the progress of the calculations when completed the Status bar shows Finished conversion e Ifyou have a hex file with multiple logging sessions and did not run Extract Tide Convert Hex provides the following error message Can not process a file with multiple tide records run EXTRACTTIDE EXE to separate the records Run Extract Tide and then run Convert Hex for each of the files created by Extract Tide 60 Manual version 018 Section 7 Tide Data Processing Merge Barometr
80. Setup Installation and Data Upload Seater MW oss cucssnserssnesennesccnscnassssnucentsovstestusteveneseneassevesesonssonosesnbeversodeuasonsvoceseds 28 Programming for Deployment SeatermW cccceesceseeseeeseceeeeeeeteeeseentes 28 Command Descriptions c ccsccescceseeeseesseceecaeeeaeeeeeeseeeeeeeesseeeaeeneesseenaeenaes 33 General Command Notes ccccscccsseessessceesceesceeeceeeeseeesecaeeneeeneeeeeeneeaes 33 Commands i slseslest E Sasadh Pic daoectastede assole digas deetucs tinted ened te tigen 35 Using SBE 26plus as a Tide Recorder cecceecceesceescesseeeecenecesecsseeeeneenseesaes 52 Using SBE 26plus as a Wave Recorder cccceecseesseesceseceeeceeeeseenseeeeneenseenaes 52 Setting Time in SBE 26plus to Synchronize Sampling of Multiple Instruments eccccccesceesecesecseeceeeeeeeeneeeeeeeeeeeeseeeneeeneenseenseenaes 53 Installing and Deploying SBE 26plus 0 ccccccccsccssseenseesceesceeseeeeeeeenseeneenseenaes 54 Recovering SBE 26p1US ERA AE E E RT 55 Uploading Data from MeMory ccccesccesecsseesseeseeeeeeeseeeeeeeeseenseenseenseenaeenaes 56 Section 6 Conversion into Tide and Wave Files Extract Tide and CONE A n KD EEEE E E E E TTE 58 EXIT ACE ideene a a o e est aed 58 COnVert Hekimenen E E E a E E E E ES N 59 Manual version 018 Table of Contents SBE 26plus Section 7 Tide Data Processing Merge Barometric Pressure 61 Input Barometric Pressure File F
81. a Click Start Process to begin processing data Status field shows Processing complete when done If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit 73 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus X Axis Tab The X Axis tab defines the plot style as well as the X axis variable scale and line type The X Axis tab looks like this for Wave Time Series Tide Time Series or Wave Statistics io x File Options Help Selection dependent on Plot type selected on Plot Setup tab File Setup Plot Setup Axis Y Axis 1 Y Axis 2 e Wave Time Series time seconds e Tide Time Series date and time e Wave Statistics burst number or date and time Variable MAREN Plot Style Overlay C Stacked Overlay overlay plot for all Y axis variables on one plot or Stacked create a separate plot for each Y axis variable with plots stacked vertically above each other Select to label axis with variable ee B name as listed in drop down Label axis with variable name Variable list or enter Custom label for axis Custom label i Select desired line type color and Line type Thin Solid symbol Selection of color or monochrome plot and inclusion of E Line symbol Enana symbols in plot is made on Plot _Line Color E APAL Setup tab and applies to all axes
82. ain in order VVVV Input file name Software version used to upload the data 26plus response to status DS command 26plus response to calibration coefficients DC command e Following lines Data follows with each line followed by a carriage return and line feed Data is described below 111 Manual version 018 Appendix III Data Formats SBE 26plus Setup Parameters and Tide Data with Strain Gauge Pressure Data lines after the S gt DD is described below Tide 26plus without Conductivity 26plus with Conductivity Line all flags and tide data is 9 bytes 18 Hex characters all flags and tide data is 12 bytes 24 Hex characters FFFFFFFFFFFFFFFBFFFFFFFE Flag start of 1 FFFFFFFFFBFFFFFFFF Flag start of setup parameters setup parameters Pi 3 4 091B5D370000000000 First 4 bytes is start time seconds since January 1 2000 of integration of first tide sample Remaining bytes are 0 s 012c00010000000000 First 2 bytes 012C is tide sample interval seconds next 2 bytes 0001 is number of 0 25 second periods to integrate wave samples Remaining bytes are 0 s FFFFFFFFFCFFFFFFFF Flag end of setup parameters 091CAFE70000000000000000 First 4 bytes is start time seconds since January 1 2000 of integration of first tide sample Remaining bytes are 0 s 012C00010000000000000000 First 2 bytes 012C is tide sample interval seconds next 2 bytes 0001 is number of 0
83. ample including temperature but not conductivity 0 14 watt Plan Deployment and Conductivi le 0 71 watt ds 0 71 joul Battery and Memory onauctivity samp e 0 1 wa meen s 0 1 joules Endurance Standard 12 alkaline D cell batteries Duracell MN1300 LR20 Typical capacity 756 000 joules Sea Bird recommends derating 15 for safety and 5 per year for battery self discharge Consider derating further for cold water applications Power Optional 6 lithium DD cell batteries Electrochem BCX85 3B76 TC with buttons lithiums not supplied by Sea Bird Note that 1 lithium DD is Supply shorter than 2 alkaline Ds so different battery cover plate required cover plate available from Sea Bird Typical capacity 2 332 800 joules Sea Bird recommends derating 15 for safety and 3 per year for battery self discharge Optional external power source 12 20 VDC Housing Materials 600 meter acetal copolymer plastic housing titanium end cap With 45 400 psia Digiquartz pressure sensor or any strain gauge Weight with pressure sensor alkaline 6 8 kg 15 Ibs in air 2 3 kg 5 Ibs in water batteries Optional mounting fixture 3 6 kg 8 lbs in air 1 4 kg 3 lbs in water 12 Manual version 018 Section 2 Description of SBE 26plus SBE 26plus Dimensions and End Cap Connectors With 45 to 400 psia Digiquartz or any strain gauge pressure sensor 76 7 cm 30 2 in With 1000 psia Digiquartz pressure s
84. ance at the spectrum shows where the wave variance is in frequency space The surface wave spectral density function G has units of m sec To find the variance m7 in a frequency interval f Hz multiply G_ by df Total Variance and Energy The total variance Var is the sum of all the band averaged spectral estimates tot Np Va w J Galfy df m 27 k 1 where df is the number of spectral estimates in the band divided by the total sample period n is the number of frequency bands computed G f is the spectral estimate for the frequency centered at f The total wave energy J m is found by multiplying the total variance by the specific weight of water W Significant Wave Height and Period The significant wave height is the average height of the highest 1 3 of the waves and is estimated from the auto spectrum as His 4 Var m 28 The significant wave period estimated from the auto spectrum is the period corresponding to the frequency with the highest variance Surface Wave Time Series To reconstruct the surface wave time series from the subsurface pressure the transfer function H f see equation 26 is applied frequency by frequency to the scaled raw spectral estimates A f H fi P fi fis Nyquist 29 where A f are the raw spectral estimates of surface wave amplitude and P f are the spectral estimates of subsurface pressure The spectral estimates for f gt Nyquist are g
85. and to begin logging if Start has not been sent YES if Start has been sent and 26plus is currently logging YES waiting to start if Start has been sent but 26plus is programmed to start logging at a future date time Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Status Command continued Example user input in bold parameter used to change value in parentheses S gt DS SBE 26plus quartz V 7 1 SN 12345 30 Dec 2012 13 35 13 SetTime or DateTime user info test setup UserInfo quartz pressure sensor serial number 90319 range 1000 psia internal temperature sensor ExternalTemperature conductivity NO Conductivity iop 6 0 ma vmain 15 3 V vlith 9 3 V last sample p 14 3727 t 2 924 tide measurement interval 60 000 minutes duration 120 seconds SetSampling measure waves every 6 tide samples SetSampling 4096 wave samples burst at 4 00 scans sec duration 1024 seconds SetSampling logging start time 29 Jan 2013 00 00 00 see Note 3 SetSampling and SetStartTime logging stop time 30 Jan 2013 00 00 00 SetSampling and SetStopTime tide samples day 24 000 wave bursts day 4 000 memory endurance 676 1 days based on SetSampling nominal alkaline battery endurance 1026 8 days based on SetSampling deployments longer than 2 years are not recommended with alkaline batteries see Note 1 total recorded tide measurements 0 total reco
86. are a total of wave samples burst 2 lines of wave pressure data wave samples burst 2 lines of wave pressure data Last FFFFFFFFFFFFFFFFFF Flag end of wave burst FFFFFFFFFFFFFFFFFFFFFFFE Flag end of wave burst Note You must run ExtractTide exe Convert Hex converts the hex data to pressure in engineering units when the data is separated into before Convert Hex if your uploaded hex file contains data from multiple logging sessions See Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex tide and wave burst files The wave burst data conversions are described below Pressure temperature compensation frequency Hz PTCF pressure temperature compensation number 256 Pressure frequency Hz PF pressure number 256 Pressure is computed as follows U 1 0 PTCF 1000000 UO C C C2 U D D1 D2 but D2 0 s0 C3 U D D1 TO T1 T2 U T3 U T4 U 1 000 000 W 1 0 TO TO pressure psia slope correction where e PF PF C W 1 0 D W POffset offset correction UO Cl C2 C3 D1 T1 T2 T3 T4 and POffset are entered in the 26plus EEPROM at the factory using the calibration coefficient commands and are read by Convert Hex from the uploaded hex file header in the DC command response Slope and offset corrections are read from the Convert Hex calibration coefficients
87. art logging Start Recovery and Data Processing 1 Connect 26p us to computer and run SeatermW Stop logging Stop and upload data from 26p us memory Section 5 2 Ifthe uploaded data is from multiple logging sessions run Extract Tide to create a separate file for each logging session Section 6 3 Run Convert Hex to convert uploaded data into separate wave and tide files Section 6 4 Run Merge Barometric Pressure to remove barometric pressure from tide file Section 7 5 Run Process Wave Burst Data and Create Reports to calculate and summarize wave statistics Section 8 6 Run Plot Data to display the data Section 9 Manual version 018 Section 1 Introduction SBE 26plus Unpacking SBE 26plus Shown below is a typical SBE 26p us shipment SBE 26plus Pressure sensor oil refill kit I O Cable i Jackscrew kit Spare battery end cap hardware and o ring kit Spare hardware kit Software and electronic copies of software manuals and user manual Manual version 018 Section 2 Description of SBE 26plus SBE 26plus Section 2 Description of SBE 26plus This section describes the functions and features of the SBE 26plus including specifications dimensions end cap connectors power supply and cable length limitations data I O protocols and real time setup System Description The SBE 26plus Seagauge Wave and Tide Recorder combines Sea Bird s non volatile FLASH memory with a
88. ast start 17 wave bursts since last start 5 transmit real time tide data NO transmit real time wave burst data NO transmit real time wave statistics NO status stopped by user logging NO send start command to begin logging S gt DC Pressure coefficients 7 UO 5 856409e 00 Ss more pressure sensor calibration coefficients M 279620 2 B 18641 3 offset 0 000000e 00 Temperature coefficients x TAO 5 473956e 04 z i TAL 1 803112e 04 TA2 3 899926e 06 E TA3 6 722141e 09 Note 82DD If you uploaded data in FFFFFFFFFBFFFFFFFF flag beginning of tide parameters binary SeatermW sent 091CB0510000000000 time of beginning of first tide sample DBbaud b e instead of DD 012C00010000000000 Oe ae Pe wave ae period PREPPPEPECRRFREFRE ag end of tide parameters ie ee 3FB78A6CA4091CB051 tide data pressure temperature and time 3FB7DE6CEBO91CB17D tide data pressure temperature and time command so the file looks 3FB8F66D33091CB2A9 tide data pressure temperature and time exactly the same regardless 000000000000000000 flag beginning of wave burst of whether ASCII or binary 091CB3220200000000 time of beginning of wave burst number of samples in burst upload was used 029B83E80000000000 pressure temperature compensation number number of samples in burst 87CED887CED6 wave burst pressure data eee wave burst pressure data 87CEE087CEEA wave burst pressure data
89. ate between computer and ort fi 26plus communication coms 3500 38400 7 Upload baud to 9600 but can be changed by the user see Command Descriptions Other communication parameters 8 data bits with 26plus L matches 1 stop bit and no parity communication baud cannot be changed OK Help Cancel unless binary upload is selected Verify modify the parameters in the Configuration dialog box Click OK 29 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Notes e The first line of the DS response shows quartz if the 26plus includes the standard quartz pressure sensor or strain if the 26p us includes the optional strain gauge pressure sensor The 26plus automatically enters quiescent sleep state after 2 minutes without receiving a command This timeout algorithm conserves battery energy if the user does not send QS to put the 26plus to sleep If the system does not appear to respond select Connect in the Communications menu to reestablish communications 4 Inthe Communications menu select Connect The display looks like this SBE 26plus S gt This shows that correct communications between the computer and 26plus has been established If the system does not respond with the S gt prompt e select Connect again e Verify the correct instrument Comm port and baud rate were entered in the Configur
90. ater The bladder bag is vacuum Lifting eye _ back filled The bladder bag can develop tears and leaks over time If the fitting has been damaged or investigation due to poor data shows that the bag has torn replace the fitting and bag and refill the oil Sea Bird highly recommends that you send the SBE 26plus back to the factory for this repair as it is difficult to completely remove all air from the system in the field resulting in potential pressure errors However if you must do the repair to meet a L deployment schedule contact Sea Bird to purchase the needed parts Connector End Cap Parts required Ses Description Quantity 30551 Pressure port bladder bag 2 50025 Pressure sensor oil refill kit I provided with 26p us shipment 50029 Nylon capillary assembly 2 30002 Swagelock nylon NY 200 1 OR 2 Syringe 60 cc DURR 899069 MFG 309663 30521 1 18 gage needle ground Only 1 is required but we recommend that you purchase a spare in case you have difficulty with the procedure Tf you have a bell jar use it to de gas the oil in the oil refill kit z Pressure cover 1 Securely mount the 26plus vertically connector end cap up Lifting eye 2 Remove the 3 Phillips head screws attaching the pressure tube guard wa to the lifting eye Remove the pressure tube guard and the pressure cover that is under it Pressure 7 tube guardN i d Pressure bag 3 Remove t
91. ation dialog box e Check cabling between the computer and 26plus 5 Display 26plus setup information by clicking Status SeatermW sends the DS command The display looks like this SBE 26plus quartz V 7 1 SN 12345 user info test setup quartz pressure sensor serial number 90319 range 1000 psia internal temperature sensor conductivity YES iop 6 0 ma vmain 15 3 V vlith 9 3 V last sample p 21 9520 t 21 0250 s 34 3799 30 Dec 2012 13 35 13 tide measurement interval 60 000 minutes duration 120 seconds measure waves every 6 tide samples 4096 wave samples burst at 4 00 scans sec duration 1024 seconds do not use start time do not use stop time logging start time logging stop time tide samples day 24 000 wave bursts day 4 000 memory endurance 676 1 days nominal alkaline battery endurance 1011 3 days deployments longer than 2 years are not recommended with alkaline batteries total recorded tide measurements 0 total recorded wave bursts 0 tide measurements since last start 0 wave bursts since last start 0 transmit real time tide data YES transmit real time wave burst data YES transmit real time wave statistics NO status stopped by user logging NO send start command to begin logging 6 Send the desired commands to set up the 26plus see Command Descriptions below Verify the setup by clicking Status again 30 Manual vers
92. atistics show progress messages y n n new value n number of wave samples per burst to use for wave statistics 512 new value 512 use measured temperature and conductivity for density calculation y n y new value n average water temperature above the pressure sensor deg C 15 0 new value 15 0 average salinity above the pressure sensor PSU 35 0 new value 35 0 height of pressure sensor from bottom meters 0 0 new value 0 0 number of spectral estimates for each frequency band 5 new value minimum allowable attenuation 0 0025 new value 0 0025 minimum period seconds to use in auto spectrum 0 00e 00 new value maximum period seconds to use in auto spectrum 1 00e 06 new value hanning window cutoff 0 10 new value 0 10 6 0 00e 00 1 00e 06 S gt DS SBE 26plus quartz V 7 1 SN 12345 30 Dec 2012 13 21 13 user info test setup quartz pressure sensor serial number 90319 range 1000 psia internal temperature sensor conductivity YES iop 6 0 ma vmain 15 3 V vlith 9 3 V last sample p 21 9520 t 21 0250 s 34 3799 tide measurement interval 60 000 minutes duration 120 seconds measure waves every 6 tide samples 4096 wave samples burst at 4 00 scans sec duration 1024 seconds logging start time do not use start time logging stop time do not use stop time tide samples day 24 00 wave bursts day 4 00 memory endurance 676 1 days nominal alkaline battery en
93. attenuation p bottom p surface for various bottom depths and wave periods less than 0 001 High Frequency Cutoff The table above shows that the pressure attenuation with depth is a strong function of the wave period short period waves attenuate much faster with depth than longer period waves This implies that for a pressure sensor deployed at a fixed depth z there is a high frequency cutoff fmax for which waves with f gt fmax are not measurable Above the high frequency cutoff any noise in the subsurface pressure record is mapped by the transfer function into unrealistic surface wave height values The default high frequency cutoff for Process Wave Burst Data is the frequency where the ratio of pressure measured by the SBE 26plus to pressure at the surface is less than 0 0025 wave sample duration see equation 20 Frequencies greater than fmax are not processed by Process Wave Burst Data for most applications Example Water depth is 10 meters You are interested in measuring waves with frequencies up to 0 36 Hz period 1 0 36 2 8 seconds You plan to sample waves 4 times per second wave sample duration 0 25 seconds with 1024 samples per wave burst and to process data with 10 spectral estimates band Can you place the 26plus at 1 meter above the bottom and accomplish your goals Running Plan Deployment with the above parameters the Frequency Span is 0 0215 to 0 3340 Hz Since 0 334 lt 0 37 you cannot ac
94. ay in energy density text at right of a 2D plot Include chi squared confidence intervals e Overlay 3D 3D plot of frequency z energy density and either burst Display Burst Parameters number or date and time Select to label axis with variable Label axis with variable name name as listed in drop down Variable list or enter a Custom ustom label label for axis i or monochrome plot and Line Color A Line symbol e Auto range Plot Data selects i aan applies to all axes ia hee Select desired line type color YP Thin Solid 7 and symbol Selection of color Solid Circle inclusion of symbols in plot is made on Plot Setup tab and axis Minimum and Maximum V Auto range Minimum f0 0000 values number of Major divisions on axis and number Maximum f10 0000 of Minor divisions between i Major divisions Auto divisions Major E e Auto divisions Plot Data selects number of major Minor fi divisions on axis and number of minor divisions between major divisions User selects axis Minimum and Maximum values Any values that fall outside user selected Minimum to Maximum Start Process Bee Benoa range will plot at minimum or maximum as applicable Click Start Process to begin Return to Seasoft for Waves window processing data Status field e f Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save c
95. complish your goals Iterating on a solution by changing the instrument height in Plan Deployment you find that placing the 26plus at 2 5 meters above bottom will allow you to measure the desired frequencies Alternatively you could consider modifying other sampling parameters while maintaining the instrument height 132 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Wave Processing Steps To compute surface wave energy spectra and statistics the frequency dependent attenuation must first be removed from the subsurface pressure data Fourier analysis techniques are used to decompose the subsurface time series into a group of linear wave components each with a distinct frequency amplitude and phase Initial Processing of Pressure Data First the wave burst data is read into an array The mean is computed and then the mean and trend are removed from the array A trend is expected in the wave data due to tides and other low frequency waves If these trends are not removed distortions can occur in the processing of spectral estimates the ramp function in the time domain leaks all over the spectrum in the frequency domain Density D is computed from the user supplied salinity and temperature Instrument depth z and water depth h are computed by z 6894 757 mean pressure 14 7 Dwg m 8 h z height of pressure sensor above bottom m 9 where the factor 6894 757 is used to convert t
96. component of a sea surface that usually contains a whole group of waves of different sizes lengths and propagation directions One of the major assumptions of linear theory is that we can take this jumbled combination and treat each frequency component or frequency band separately by using 1 First order linear small amplitude theory is the simplest and most direct solution to a very complex general set of equations and boundary conditions for surface gravity waves The simple results are based on a set of approximations that are strictly valid only over a restricted range of conditions Small amplitude wave theory is not a good model of steep or breaking waves or waves traveling in very shallow water The theory is a good model of long ocean waves away from viscous boundary layers and horizontal boundaries 129 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus 0 01 0 005 H eT 0 002 0 001 0 0005 0 0002 0 0001 0 00005 0 0005 Assumptions For the linear theory to be valid a major requirement is that the wave height H be small compared with both the wavelength L and the water depth h These conditions are usually expressed as H L lt lt 1 wave steepness HL h lt 1 Ursell parameter Another measure of the effect of wave steepness on the validity of the small amplitude theory based on laboratory measurements is shown below For the theory to be valid you must be below the curve i
97. crews and washers while pushing hard on the battery cover plate to depress the spring contacts at the bottom of the battery compartment The screws must be fully tightened or battery power to the circuitry will be intermittent For lithium DD cells For alkaline D cells 6 Check the battery voltage at BAT and BAT on the battery cover plate For standard alkaline D cell batteries it should be approximately 18 volts For lithium DD cell batteries it should be approximately 21 volts 7 Reinstall the battery end cap A Remove any water from the O rings and mating surfaces with a lint free cloth or tissue Inspect the O rings and mating surfaces for dirt nicks and cuts Clean or replace as necessary Apply a light coat of o ring lubricant Parker Super O Lube to O rings and mating surfaces B Carefully fit the end cap into the housing and screw the end cap into place Use a wrench on the white plastic bar to ensure the end cap is tightly secured 80 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Pressure Sensor Maintenance Pressure sensor port The pressure fitting which includes a pressure port fitting external tube and polyurethane bladder bag is filled with silicone oil at the factory The oil transmits hydrostatic pressure via internal capillary tubing to the pressure sensor inside the instrument and prevents corrosion that might occur if the sensor diaphragm was exposed to w
98. ct Plot Data Each tab of the dialog box is Example C Documents and Settings described below as well as options for viewing printing and saving plots dbresko Local Settings Apps Sea Bird File Setup Tab The File Setup tab defines the Program Setup file input data file s and output plot file name The File Setup tab looks like this lox File Options Help File to store all information input in File Plot and Axis tabs Open to File Setup Plot Setup X Axis Y Axis 1 Y Axis 2 select a different psa file Save or Save As to save current settings Program setup file or Restore to reset all settings to match last saved version C Documents and Settings dbresko My Documents PlotD atatest psa Open Save SaveAs Restore Input directory data SBE26 DATA Directory and file names for input Input files 2 selected data files tid wb was wts and or wt files All files must be in rate same directory and have same name before extension Select to pick different files Output directory Ic Documents and Settings dbresko My Documents Select Name append Default directory and file name can be changed while viewing plot for outputting graphic file in wmf jpg or bmp format Default file name is set to match input file Not processing name with additional characters added before extension in order listed below e Name append to allow use
99. ctrum aa Statistics was File significant wave height swh was significant wave period swp was 68 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus Note SeasoftWaves ini contains the location and file name of the last saved psa file for each module SeasoftWaves ini is stored in USERPROFILE Proceed as follows Local Settings Apps Sea Bird i Example C Documents and Settings 1 In Seasoft for Waves Run menu select Create Reports The File Setup dbresko Local Settings Apps Sea Bird tab looks like this ini xi File Options Help File to store all information input in File File Setup Data Setup Setup and Data Setup tabs Open to select a different psa file Save or Save Rrogram setup file As to save current settings or Restore I data SBE 26 DATA CreateRepotts psa to reset all settings to match last saved version Open Save Save As Restore Input directory data SBE 26 DATA 1O074 page ms file eal A was P Select one WAS and one WTS input file Nits thet Both was and as flee must be selected even if you intend to output variables from only one of the files Files must be in same directory and must have Output directory same name beror extension I data SBE26 DATA 10074 Select Name append Output file JARO 94 126 Directory and file name for output data Name append i
100. d to lubricate O rings and O ring mating surfaces Super O Lube can be ordered from Sea Bird but should also be available locally from distributors Super O Lube is manufactured by Parker Hannifin www parker com ead cm2 asp cmid 3956 TCXO Temperature Compensated Crystal Oscillator Triton X 100 Reagent grade non ionic surfactant detergent used for cleaning the conductivity cell Triton can be ordered from Sea Bird but should also be available locally from chemical supply or laboratory products companies Triton is manufactured by Avantor Performance Materials www avantormaterials com commerce product aspx id 2 147509608 91 Manual version 018 Appendix Command Summa SBE 26plus Appendix Command Summary Note See Command Descriptions in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW for detailed information and examples CATEGORY COMMAND DESCRIPTION Status DS Display status and setup parameters Setup SetTime Set real time clock date and time DateTime x Baud x x real time clock date and time See Setting Time in SBE 26plus to Synchronize Sampling of Multiple Instruments in Section 5 x baud rate for general communication 600 1200 2400 4800 9600 19200 or 38400 Default 9600 ExternalTemperature x x Y Optional external thermistor x N Standard internal thermistor Default Conductivity x UserInfo x x Y
101. data Although SeatermW sends are in memory because only 500 000 bytes can be uploaded in DBbaud b e to upload data in binary one block the uploaded hex file shows the DD SeatermW sends the data upload command DBbaud b e as many command so the file looks exactly the times as needed to upload all the data in memory in blocks of same regardless of whether ASCII or 500 000 bytes binarv upload was used SeatermW converts the binary data back to ASCII and writes the data to the upload file The Status bar at the bottom of the SeatermW window displays the progress of the upload indicating the number of uploaded lines of data 7 Type QS and press the Enter key to put the 26p us in quiescent sleep state until ready to redeploy 8 Ensure all data has been uploaded by processing the data See Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex 57 Manual version 018 Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex SBE 26plus Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex This section covers e Splitting uploaded data from multiple logging sessions into separate data files using ExtractTide exe e Converting uploaded hex hex data into separate wave data wb and tide data tid files with data in engineering units using Convert Hex in Seasoft for Waves The data must be converted and split into separate wave and tide fil
102. decimal Time 152874983 seconds since January 1 2000 November 4 2004 09 16 23 113 Manual version 018 Appendix Ill Data Formats SBE 26plus Wave Burst Data with Strain Gauge Pressure Data lines from beginning to end of wave burst is described below 26plus without Conductivity 26plus with Conductivity Aen all wave pressure data is 6 bytes 12 Hex characters all wave pressure data is 6 bytes 12 Hex characters Line all flags and other wave data is 9 bytes all flags and other wave data is 12 bytes 18 Hex characters 24 Hex characters 1 000000000000000000 Flag beginning of wave burst 00000 700 0000o raono es Flag Premier wave burst 091B60080200000000 First 4 bytes 09186008 is start 091CB2BA0200000000000000 First 4 bytes 091CB2BA 2 time seconds since January 1 2000 of wave burst is start time seconds since January 1 2000 of wave Next byte 02 is MSB of number of samples in burst Next byte 02 is MSB of number of samples in wave burst Remaining bytes are 0 s wave burst Remaining bytes are 0 s 000005000000000000 First 4 bytes 00000500 is 000004DC0000000000000000 First 4 bytes 000004Dc pressure temperature compensation number Next byte lis pressure temperature compensation number Next 3 00 is LSB of number of samples in wave burst for byte 00 is LSB of number of samples in wave burst example shown number of samples in wave burst for example sho
103. ded data is transferred to a computer via an RS 232C or optional RS 422 RS 485 full duplex data link for analysis plotting and permanent archiving The battery compartment contains twelve standard alkaline D cells Duracell MN1300 LR20 and is sealed separately to minimize risk to the electronics The standard pressure sensor is a 20 meter 45 psia Paroscientific Digiquartz with a temperature compensated quartz element As an option the Digiquartz is available in other ranges from 0 2 to 680 meters 15 to 1000 psia Another option is substitution of a strain gauge pressure sensor with a temperature compensated strain gauge element available in ranges from 20 to 600 meters 45 to 880 psia The lower priced strain gauge sensor is generally intended for wave sampling applications and will not provide the highest quality tide data Temperature is measured with an aged super stable thermistor embedded in the 26plus end cap An AC excitation is applied to a hermetically sealed VISHAY reference resistor and the thermistor A 24 bit A D converter digitizes the reference resistor and thermistor outputs Manual version 018 Section 2 Description of SBE 26p us SBE 26plus For the 26plus with Quartz pressure sensor tide measurements are obtained by counting the pressure frequency with a 32 bit ripple counter Each time the 26plus wakes up the ripple counters are latched into registers and then reset The wake up times are set by a continuously
104. displays on screen If TXWAVESTATS prompt in SetSampling command is Y real time wave statistics display on screen See Programming for Deployment SeatermW for a description of screen displays while logging Logging stops at time set with SetStopTime 45 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Send Last Sample Commands Note See General Command Notes above for issues relating to sending commands while the 26plus is making a tide or wave measurement These commands cause the 26p us to transmit data from the last tide or wave measurement These commands are functional only while the 26plus is logging after Start has been sent to start logging now or at a future date time e If Start has not been sent the 26p us responds with CMD Note SL and SLO return values of 99 0000 for each parameter if Start has been sent but there is not yet a completed tide measurement in memory SL Send pressure temperature and salinity if optional conductivity sensor installed from last tide measurement and do not go to sleep do not enter quiescent state SLO Send pressure temperature and salinity if Notes e SLT SLWT and SLWS return whatever happens to be in memory if Start has been sent but there is not yet a completed wave measurement in memory e To get valid data from SLWT and SLWS you must set TXWAVESTATS y in SetSampl
105. durance 973 6 days deployments longer than 2 years are not recommended with alkaline batteries total recorded tide measurements 0 total recorded wave bursts 0 tide measurements since last start 0 wave bursts since last start 0 transmit real time tide data YES transmit real time wave burst data YES transmit real time wave statistics YES real time wave statistics settings number of wave samples per burst to use for wave statistics 512 do not use measured temperature and conductivity for density calculation average water temperature above the pressure sensor deg C 15 0 average salinity above the pressure sensor PSU 35 0 height of pressure sensor from bottom meters 0 0 number of spectral estimates for each frequency band 5 minimum allowable attenuation 0 0025 minimum period seconds to use in auto spectrum 0 0e 00 maximum period seconds to use in auto spectrum 1 0e 06 hanning window cutoff 0 10 do not show progress messages status stopped by user logging NO send start command to begin logging 42 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Initialize Logging Reset Memory Commands Note Do not initialize logging until all data has been uploaded InitLogging does not delete data it resets the data pointer If you accidentally initialize logging before uploading recover data as follows For Standard ASCI
106. e DS IZel k 1 of lt G p fb gt Pa sec 23 Confidence Intervals Error Bars The properties of a real world random time series cannot be precisely determined from sample data Only estimates of the parameters of interest can be obtained The method for setting error bars on the estimates of the auto spectral density function lt G ge is related to the Chi Square distribution function X2 135 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus The confidence interval 1 c a is the significance for the true auto spectral value G based on an estimate lt G gt is given by ng lt G pp na lt G p gt 6S ys 24 X2nga 2 X ngl a 2 where n 2 number of frequency bands averaged X n ya percentage points Chi Square distribution with n degrees of freedom and significance a The Chi Square distribution is described completely in most statistics books for example J E Freund Mathematical Statistics 1962 Prentice Hall Inc For example if 10 frequencies are averaged per band and we wish to know the error bars corresponding to the 90 confidence interval ny 20 alpha significance 0 1 xX 31 41 x 10 85 20 0 05 20 0 95 Therefore the error bar is 0 637 lt G gt lt G pp 1 843 lt G gt This means that we can say with 90 certainty that the true value of Gp lies somewhere between 0 637 and 1 843 times the estimated value of Gpp When band a
107. e sensor integration 0 01 watt tide duration Tide sample including temperature 0 30 watt sec Conductivity sample 0 40 watt sec e Wave burst measurement Wave burst duration number of wave samples wave sample duration sec Wave burst 0 11 watt wave burst duration sec Real time wave statistics 0 2 Wwatts 0 06 sec sample real time statistics samples burst Example 26plus with quartz pressure sensor conductivity sensor and standard alkaline batteries Measure tides every 60 minutes 24 measurements day with measurement duration of 120 seconds Measure waves after every 6 tide samples 24 6 4 wave bursts day Take 4096 wave measurements per burst at 0 25 second integration time per measurement Do not output real time wave statistics Note This is same sampling scheme as shown in Battery and Memory Endurance dialog box above Tide sample 26plus is sleeping between samples because tide duration lt tide interval 20 seconds 120 lt 3600 20 Pressure integration 0 01 watt 120 sec 10 sec 1 3 joules measurement Turn on 0 30 joules measurement Tide sample including temperature 0 30 joules measurement Conductivity sample 0 4 joules measurement Quiescent between samples 0 0005 watt 3600 sec 120 sec 10 sec 2 sec 1 74 joules measurement Note This provides a small over estimate of quiescent power because quiescent time is reduced during each tide interval that inc
108. e this hex file uploaded from 26plus memory or Convert Hex to Wave and Tide BEE output from Extract Tide Click Browse to search for file or type in path and file name yp P Input file C TestD ata hex Browse Output tide file C TestData tid Desired path and file names for output tide Output wave file C TestData wb Se a escort pete ang Coefficients required C Test psa y Coefficients If desired type in path and file name to change it from default psa file contains calibration coefficients to make small corrections for pressure sensor drift between calibrations Click Coefficients to view or modify coefficients or search for different file Conversion status bar Convert File Help Cancel Note SeasoftWaves ini contains the location and file name of the last saved psa file for each module SeasoftWaves ini is Enter information in the dialog box Click Coefficients to enter verify stored in USERPROFILE calibration coefficients for converting hex data to engineering units Local Settings Apps Sea Bird Example C Documents and Settings dbresko Local Settings Apps Sea Bird 2 The Coefficients dialog box looks like this Coefficient Configuration Coefficients file C Test psa Slope and offset psia used to make Instrument small corrections for pressure sensor c x drift between calibrations Other P SEG SRE peoks PRESS coefficients are programmed into 26plus at
109. e wave burst data YES real time wave data transmission was enabled with TxWave Y each time a wave burst measurement is made the display looks like this wave start time 26 Jan 2006 13 43 13 wave ptfreq 172046 343 or wave ptRaw 1 278 Note 14 5599 This wave data was obtained while the 14 5598 instrument was on land so the output 14 5597 is indicating essentially 0 wave height Sap 14 5598 wave end wave burst where e start time start of wave measurement e ptfreq pressure temperature frequency Hz displays only for 26p us with Quartz pressure sensor e ptRaw calculated pressure temperature number displays only for 26p us with Strain Gauge pressure sensor e Remaining displayed values are calculated and stored pressures psia 31 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus If the DS response shows transmit real time wave statistics ES real time wave statistics was enabled with TXWAVESTATS Y in the SetSampling command prompt each time a wave burst is completed the display looks like this if Show progress messages n K Auto Spectrum Statistics nAvgBand 5 total variance 1 7509e 08 total energy 1 7137e 04 significant period 4 2667e 01 significant wave height 5 2928e 04 Time Series Statistics Wave integration time 128 Number of waves 0 Total variance 1 6868e 08 Total energy 1 6512e 04 Average wave he
110. ears Verify modify the instrument Comm port and baud rate and whether to upload in binary if binary upload is selected or in ASCH Select to enable binary upload If enabled allows selection of upload rate up to 115 200 baud SeatermW Configuration Select 26plus SBE 26 Binary upload SBE 26plus SBE 53BPR Baud rate for general Computer communication n a o omm Port Baud Rate Upload Baud Rate between computer ati and 26plus communication coms 9600 32400 Upload baud with 26plus as OK matches Click OK communication baud Help Cancel unless binary upload is selected 3 Select Connect in the Communications menu The S gt displays This shows that correct communications between the computer and 26plus has been established If the system does not respond with the S gt prompt e Select Connect again e Verify the correct instrument Comm port and baud rate 8 data bits 1 stop bit and no parity were selected as documented on the instrument e Check cabling between the computer and 26plus Configuration Sheet Baud rate be changed with Baud other parameters cannot be modified can i 4 Ifthe 26plus is still logging command it to stop logging by typing Stop and pressing the Enter key You may need to press the Esc key before entering Stop to get the 26p us to stop if it is in the middle of sampling 5 Display 26plus status inf
111. ease integration time per measurement 39 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Wave and Tide Setup Command continued Notes e Wave statistics can also be calculated on uploaded data using the Process Wave Burst Data module in Seasoft for Waves The real time wave statistics parameter values entered with SetSampling are not used in Process Wave Burst Data See Section 8 Wave Data Processing Process Wave Burst Data and Create Reports and Appendix VI Wave Theory and Siatistics for details on wave statistic input parameters and calculations use start time y n n new value If yes 26p us responds to Start by starting logging at date and time set with SetStartime If no 26plus starts logging 10 seconds after Start is sent use stop time y n n new value If yes 26plus stops logging at date and time set with SetStopTime If no 26plus continues logging until Stop is sent TXWAVESTATS real time wave statistics y n n new value If yes 26plus calculates and outputs real time wave auto spectrum statistics total variance total energy significant period significant wave height and time series statistics number of waves total variance total energy average wave height average wave period maximum wave height significant wave height significant wave period H1 10 and H1 100 at the end of every wave burst Does no
112. eated from the wb file in Process Wave Burst Data if Output surface wave time series to wt file is selected Part of a sample surface wave time series file is shown below SBE 26plus eA 39714178 Te OQ 32 0 1783 0 2180 0 1793 0 0721 0 0615 0 1677 0 2036 0 1582 0 0521 0 0754 0 1829 0 2384 e First line flags the beginning of the data for a wave burst Line contains in order Wave burst number Start of tide measurement seconds since January 1 2000 Wave integration period seconds Number of points in wave burst VVVV e Second and following lines until the next line with Measured wave amplitudes in meters with four values per line Wave Burst Statistics Report r26 extension A 126 file is created from the was and wts file in Create Reports Part of a sample report file is shown below filename D SBE26 951002 WAS WTS wave integration time 1 00 number of points in the burst 1024 height of SBE 26 above the bottom 0 300 density 1024 153 Burst Time jdays Time hours Depth Nwaves Avgheight Avgper Maxheight H1 10 H1 100 Swp wts Swh wts 0 232 67205 0 000 17 759 211 4 600717e 01 3 838863e 00 3 384997e 00 1 441726e 00 3 134322e 00 4 200000e 00 8 141103e 01 1 232 75538 2 000 17 679 185 2 278769e 01 4 383784e 00 8 741022e 01 7 083250e 01 8 741022e 01 6 344262e 00 5 092874e 01 e Beginning lines flags header Header lines contain in order Input file name Wave integration
113. eatermW uploads the data in binary and then converts to ASCII resulting in a hex file with the same format as from an ASCII upload DBbaud b e Upload data in binary at baud rate of baud 1200 2400 4800 9600 19200 28800 38400 57600 or 115200 from byte b to byte e First byte number is 0 26plus can upload data in blocks of up to 500 000 bytes at one time Sending this command manually does not provide useful information ByteCount Display total number of bytes in memory 47 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Diagnostic Commands Data from these tests is not stored in FLASH memory TS Take 1 sample of pressure pressure temperature temperature and optional conductivity and output converted data pressure psia pressure temperature C temperature C conductivity S m and Note salinity psu Conductivity and salinity are output only if conductivity is enabled TSR Take 1 sample of pressure pressure Conductivity Y temperature temperature and optional conductivity and output raw data Output varies depending on pressure sensor type e Quartz pressure sensor pressure frequency Hz pressure temperature frequency Hz temperature A D counts and conductivity frequency Hz e Strain Gauge pressure sensor pressure A D counts pressure temperature number temperature A D counts and conductivity frequency Hz TT Sample temperature a
114. een the maximum allowable wave burst duration real time wave statistics calculation and tide interval see other drawings below for sequencing of wave and tide measurements Tide interval Wave duration Real gt 20 sec wave samples burst time wave sample duration wave statistics calculation if selected e If tide duration tide interval wave burst sampling is done during the applicable tide measurement and the 26p us samples tides continuously See Quartz Example 1 Tide interval Li ST SS O O Tide duration Tide duration Sea Paes Real Tide interval Wave duration gt 18 sec 2secT amp Q wave samples burst time measurement wave sample duration wave for first tide statistics measurement calculation for second if selected tide Quartz Example 1 Tide interval tide duration 15 minutes 900 sec 1024 samples wave burst at 0 25 sec sample 1024 x 0 25 256 sec every 2 tide measurements Calculate real time wave statistics on 512 samples wave burst 512 x 0 06 sec calculation 30 7 sec required at end of wave burst Set SetStartTime to 12 00 00 Checking setup wave burst duration real time wave statistics calculation 256 30 7 287 sec lt tide interval 20 sec 900 20 880 sec Time Time Begin End Wave End Wave Time Stamp Begin P for End P for BeginT amp C EndT amp C Stamp Wave Burst amp Begin Statistic for Tide
115. emory 26p us transmits tide measurement start time pressure psia pressure temperature C and temperature C If Conductivity Y it also transmits conductivity S m and salinity psu x N Do not transmit real time tide data x Y Transmit real time wave data while logging Does not affect storing data to memory 26p us transmits wave burst start time pressure temperature frequency Quartz pressure or pressure temperature number Strain Gauge pressure and pressures psia x N Do not transmit real time wave data Quit session and place 26plus in quiescent sleep state Main power is turned off Memory retention is not affected Manual version 018 Section 5 SBE 26p us Setu Installation and Data Upload SeatermW SBE 26plus Note Wave and Tide Setup Command Drawing is schematic only intended to define the sampling scheme terminology See Appendix Il Sample Timing for SetSampling Set sampling parameters 26p us displays timing details present value and asks for new value for each parameter Type in desired value and Tide interval Tide interval Tide interval Tide interval of wave N samples burst Tide duration HILL ITT Wave sample duration length of each sample Measure waves every N tide samples N 2 as shown in burst Notes An alternate form for this command is SetSample both have the same function If only interested in tide data see Using
116. enaes 16 Limiting Communication IR Loss to 1 Volt if Transmitting Real Time Data cccccceeseeseeesceeeceseceeceseeeseeneeeeeeseeees 16 Supplying Enough Power to SBE 26p1US cccccccsscesseecseeeeeseesseeseenseensees 17 Data TO rapenean seasoned ects hea tess fs oceeev ee aa oleae a o 17 Real Time Setup is onn E E E ties E rarer EE 18 Baud R te and Cabl Length 3 22 jceces dk cccssa tescesoncciracn cence a 18 Real Time Data Acquisition ccccccscecsseesseeseeesceeeeeecesecesecneeeeeeeeeneeses 18 Section 3 Software Installation and Use ssscsscsssssssessscsssssssesssesseseees 19 Software Inst llationi neoion eniri a i ede a e ai 19 Seasoft for Waves irogei geiir i a E ela eared ete 19 Extract Tide cisco ashi Se shishid canis Anta E ait E i 19 Seasoft for Waves USe vrveietinsci aes ea ara eer 20 File Types ies scccceuiGn aie a n ee awe hd Ae na Aa 21 Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance sscssssssssesssees 22 Plan Deployments 222s heicesceetsestee natives a e a oas 22 Battery and Memory Endurance ccccesceseesseeeeesceeseeeeceseenseceseeneeneenseeaaes 24 Battery Endurance with Quartz Pressure Sensor ceceeeceeteeeeeeeenees 25 Battery Endurance with Strain Gauge Pressure Sensor eeeeeeees 26 Memory Endurance i scccscecdcccedscve cetes tecesecbentevas iiececcevieeescetevecccene ca etst 27 Section 5 SBE 26plus
117. ency bands calculated e width of each frequency band Hz e frequency span Hz given water depth meters height of pressure sensor above bottom meters wave sample duration time between successive wave pressure measurements wave samples per burst multiple of 4 for example 4 8 16 etc number of spectral estimates for each frequency band The maximum frequency in the frequency span is the lesser of e 0 5 sample duration called the Nyquist frequency or e frequency fmax described above where ratio of pressure measured by 26plus to pressure at surface is less than 0 0025 sample duration Appendix VI Wave Theory and Statistics provides detailed discussion on band averaging 22 Manual version 018 _ Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus In Seasoft for Waves Run menu select Plan Deployment The dialog box looks like this ioixi Water Depth meters 10 Calculate Spectral Parameters Enter values and then Click Instrument Height Above Bottom meters 1 Calculate Spectral Parameters to calculate bands band width and Spectral Estimates per Band 10 Help frequency span and calculate and plot pressure attenuation Wave Sample Duration seconds 0 25 Note that wave sample duration 1024 Exit and wave samples per burst are Wave Samples per Burst 1024 programmed into 26p us with 9 Bands Calculated SetSampling Band Width Hz 0 0391
118. ensor 88 9 cm 35 0 in Conductivity Connector XSG 3 BCL HP SS 1 Common 2 Signal 3 Power Optional MCBH e Connectors A MCBH 3MP WB TI 3 8 length base 1 2 20 thread 9 9 cm 3 9in B a Data I O Connector Standard RS 232 Interface XSG 4 BCL HP SS 1 Common 2 RS 232 Receive 3 RS 232 Transmit 4 External Power optional 12 20 VDC is i 0 20 MCBH 4MP WB TI 3 8 length base 1 2 20 thread Acetal copolymer housing RS 422 485 Interface wre ee Connectors Lift eye installed instead of flat handle if ordered without optional mounting fixture 8 cm 3 15in 14 9cm Battery end cap Shown Below Installed in Optional Mounting Fixture Re eee Optional acetal copolymer mounting fixture drill as required SBE 4 mount bracket SBE 4 conductivity sensor optional cable not shown Titanium connector end cap Nylon pressure port fitting Pressure bladder cover Data I O connector Conductivity connector Titanium bolt knob Optional AG 306 HP SS Common 68 8 cm 27 1 in With 45 to 400 psia Digiquartz or any strain gauge pressure sensor 77 7 cm 30 6 in With 1000 psia Digiquartz pressure sensor 89 9 cm 35 4 in 1 2 RS 422 485 A Transmit 3 RS 422 485 B Transmit 4 RS 422 485 A Receive 5 R
119. eports SBE 26plus Process Wave Burst Data Algorithm For each wave burst Process Wave Burst Data performs an auto spectrum analysis Reads burst into an array Removes mean saves mean value Uses mean value and average water temperature and average salinity input by user to compute density Removes trend Makes array a power of two Applies Hanning window to suppress side lobe leakage Adjusts scale factor to account for tapering by Hanning window Fast Fourier Transforms to create raw spectral estimates of subsurface pressure Computes maximum frequency to process Sets Fourier coefficients greater than maximum frequency or less than minimum frequency to 0 or if Use filter cutoff is selected applies a filter that ramps the Fourier coefficients down to 0 for frequencies greater than maximum frequency or less than minimum frequency Saves Fourier coefficients Band averages raw spectral estimates to create auto spectrum Applies dispersion transfer function to band center frequencies Calculates wave statistics from auto spectrum variance energy significant wave height and significant period Using the saved non band averaged Fourier coefficients Process Wave Burst Data performs a surface wave zero crossing analysis Applies dispersion transfer function to each frequency Inverse Fast Fourier Transforms to create surface wave time series Applies inverse Hanning window and adjusts scale factor Zeroes al
120. er and select Set as Default Printer Burst 0 Start 12 Feb 1008 08 11 20 4000 pol T 1024 sec 300 Double click on plot title and Plot Setup tab appears allowing you to make changes and reprocess data o 04 wave burst 0 02 z O01 E 0 00 2 a Zoom in to enlarge pom details by clicking and E dragging to select a 2 Double click on axis or axis label wave amplitude rectangular area 0 02 f time etc and appropriate Axis tab appears Plot Data zooms in on allowing you to make changes and reprocess data that area You can 0 03 with new n Si zoom in several times before reaching program limits Undo by 0 04 selecting Undo Zoom in FTN enn 0 05 500 ooo Time Seconds TOO 200 The Plot Data View window s menus are described below Output Output the plot to printer clipboard or a file Print Print the single plot that is displayed on screen In the dialog box select printer orientation color etc these selections override selections you made in Plot Data and in the Plot Data View Options menu File Output to file the single plot that is displayed on screen in the selected format wmf jpg or bmp In the dialog box select the desired directory and output file name these selections override selections you made in Plot Data and in the Plot Data View Options menu Clipboard Output to the clipboard the single plot that is displayed on screen in the selected format wmf
121. er in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW e If only interested in wave data see Using SBE 26plus as a Wave Recorder in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW duration length of each sample in burst D Measure waves every N tide samples N 2 as shown 24 Manual version 018 Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus Discussions follow of the data and equations used in Battery and Memory Notes Endurance use this information to perform your own calculations if desired See Specifications in Section 2 Description of SBE 26plus for power requirements and alkaline Battery Endurance with Quartz Pressure Sensor and lithium battery ratings 1 watt d 1 joul watt secon Joule e Tide sample If tide duration lt tide interval 20 sec the SBE 26plus goes to sleep between tide measurements drawing only quiescent power 0 0005 watt while sleeping If sleeping between tide samples tide duration lt tide interval 20 sec Quiescent 0 0005 watt tide interval tide duration 10 sec 2 sec Pressure sensor integration 0 01 watt tide duration 10 sec Turn on for each sample 0 30 watt sec Tide sample including temperature 0 30 watt sec Conductivity sample 0 40 watt sec If not sleeping between tide samples tide interval tide duration Pressur
122. ert Hex Convert uploaded data file into separate wave and tide files with output data in engineering units Tide data processing Merge i Barometric Remove barometric pressure from tide data See Section 7 Pressure Process Wave A Compute wave statistics Burst Data PANE R RS Wave data processing See Section 8 Data plotting See Section 9 Create Reports Plot Data Output one line of surface wave time series and or wave burst auto spectrum statistics for each processed wave burst Plot data from a tid wb was wts and or wt file plots can be printed Plot Data can plot data at any point after uploaded hex data is converted into separate wave and tide files in Convert Hex 20 Manual version 018 Section 3 Software Installation and Use SBE 26plus File Types File extensions are used by Seasoft for Waves to indicate the file type Extension Description bm Bitmap graphics file created by Plot Data Barometric pressure data used by Merge Barometric Pressure to remove barometric pressure from the tide data tid file This file not supplied by Sea Bird is created by user based on local barometric pressure data such as that from a local weather station See Section 7 Tide Data Processing Merge Barometric Pressure cap Real time data and or diagnostics captured using SeatermW Data uploaded from 26p us memory using SeatermW hex _ Also data from multiple logging ses
123. ery endurance in DS response is reduced and DC response shows conductivity coefficients in addition to pressure and temperature coefficients S gt DD FFFFFFFFFFFFFFFBFFFFFFFF 091CAFE70000000000000000 012C00010000000000000000 FFFFFFFFFFFFFFFCFFFFFFFF 3F9A816E50000000091CAFE7 3F9BF36EC1000000091CB113 3F9D136F47000000091CB23F 000000000000000000000000 091CB2BA0200000000000000 000004DC0000000000000000 18F03D18F054 18F07518F063 FREFFFFFFFFFFFFFFFPEEEEEE 3F 9DA2 6FB4000000091CB36B 3F9DBE7010000000091CB497 3F9F1A706A000000091CB5C3 000000000000000000000000 flag beginning of tide parameters time of beginning of first tide sample tide sample interval wave integration period flag end of tide parameters tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time flag beginning of wave burst time of beginning of wave burst number of samples in burst pressure temperature compensation number number of samples in burst wave burst pressure data wave burst pressure data wave burst pressure data flag end of wave burst tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time flag beginning of wave burst e Beginning lines flags header Header lines cont
124. es removal of barometric pressure from tide data and instructions for downloading the software from the FTP site statistical analysis and data plotting 10 Manual version 018 Section 2 Description of SBE 26p us SBE 26plus Specifications Note The pressure sensor is mounted on the titanium connector end cap with the pressure conveyed from the pressure port to the sensor via an oil filled tube The pressure reading is position sensitive as a result of the oil pressure head Quartz Pressure standard 0 to 0 2 5 10 20 60 130 200 270 680 meters Range 15 23 30 45 100 200 300 400 1000 psia Accuracy 0 01 of full scale 3 mm for 45 psia 20 m range Stabilit 0 02 of full scale year 6 mm for 45 psia 20 m range Hysteresis 0 005 of full scale 1 5 mm for 45 psia 20 m range Calibration 0 psia to full scale pressure Resolution Tide 0 2 mm for 1 minute integration 0 01 mm for 15 minute integration Wave 0 4 mm for 0 25 second integration 0 1 mm for 1 second integration Strain Gauge Pressure optional in place of Quartz pressure 0 to 20 100 350 600 meters Range 45 160 520 900 psia Accurac 0 1 of full scale 30 mm for 45 psia 20 m range Stability 0 1 of full scale year 30 mm for 45 psia range 20 m Hysteresis 0 03 of full scale 9 mm for 45 psia range 20 m Calibration 0 psia to full scale pressure Resoluti
125. es before further processing by Seasoft for Waves Extract Tide Note The SBE 26plus memory can hold data from multiple logging sessions Extract Tide is not accessed through Each time logging is started a beginning tide record is stored to designate the Seasoft for Waves It is a separate program that is automatically installed start of the logging session If the uploaded file includes data from multiple when Seasoft for Waves is installed logging sessions run Extract Tide to separate each session into a separate in the same directory as Seasoft for file before converting the data with Convert Hex If you try to run Convert Waves Hex on a file containing data from multiple sessions Convert Hex provides an error message directing you to run Extract Tide If you are not certain if the 26plus memory holds data from multiple sessions send DS and review the response If the total number of tide measurements in memory does not equal the number of tide measurements since the last start the memory holds data from multiple sessions Example 26plus memory holds data from multiple logging sessions Status response shows 5 tide measurements since last logging start but 10 total tide measurements in memory S gt DS SBE 26plus quartz V 7 1 SN 12345 26 Jan 2013 13 21 15 total recorded tide measurements 10 total recorded wave bursts 2 Since these are not equal memory holds data from multiple logging sessions tide measurements
126. file name to user input title For example for a plot title Wave Time Series with input file X wb if you select Add file name to title title is Wave Time Series X wb Plot Font type and Font size small medium or large Plot Data displays example of font type to right of selection List of fonts depends on what fonts are installed on your computer Inside Background Color defines color within axes Outside Background Color defines color outside axes Size small medium large of symbol for each variable if Monochrome plot or Plot symbols only selected Monochrome plot Substitute black lines with symbols for colors colors and symbols defined on Axis tabs Allows you to set up axes with colors for viewing on screen and then switch to black lines with symbols for black and white printing Plot symbols only Mark each individual data point with a symbol and do not connect symbols with a line symbols defined on Axis tabs Show line legends Show legends below plot title Legend indicates line color or symbol as applicable ile Options Help Available selections dependent on input file types selected on File Setup tab File Setup Plot Setup Avis YAxis YAxis2 e Wave Time Series e Tide Time Series e Auto Spectrum Plot type Wave Time Series e Wave Statistics Plottitle fwave Time Series Plot Title Color E IV Add file name to title ont type arial AaBbCcDdEeF 012345 Grid l
127. for BeginT amp C EndT amp C Stamp Wave Burst amp Begin Statistic for Tide Tide for Tide for Tide for Wave Burst Wave Statistic Calculation Tide Burst Calculation 12 00 00 1 1 12 02 00 1 1 12 02 02 1 12 15 00 2 2 1 1 12 27 48 1 12 28 19 1 12 30 00 3 3 2 2 12 30 02 2 12 32 00 3 3 12 32 02 3 12 45 00 4 4 2 2 12 47 48 2 12 48 19 2 13 00 00 5 5 4 4 13 00 02 4 Note for Quartz Example 3 Note the large variation in T amp C timing and in the length of the tide pressure measurement using this scheme 98 Manual version 018 Appendix Il Sample Timin SBE 26plus Sample Timing with Strain Gauge Pressure Sensor e If tide duration gt tide interval 10 seconds tide duration is set to tide interval 10 26plus goes to sleep between tide samples Tide interval j We itera oo interval Tide duration Tide duration 2 sec 2 sec T amp C T amp C measurement measurement Note Sea Bird recommends the following for meaningful wave statistics e Wave samples burst gt 512 and e Wave samples burst power of 2 512 1024 etc If wave burst duration real time wave statistics calculation gt tide inter
128. g on the end cap and screw the Swagelok fitting down using a 7 16 inch wrench Oil should overflow from the fitting preventing air from entering the bag the overflow should stop when the fitting is tightened When completed the bag should be approximately full of oil and contain no air 11 Install the pressure bag in the pressure bag cavity Place the tubing in Pressure the indent going counter clockwise from the bag to the fitting bag 12 Reinstall the pressure cover pressure tube guard and 3 Phillips head screws being careful not to pinch the tubing or the bag Pressure Fs cover 4 Pressure m tube gu ry 13 Log data on the SBE 26plus and download the data Compare the pressure readings to a local barometer A pinched or overfilled bag will give pressure readings that are higher that the correct values 83 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Conductivity Cell Maintenance The SBE 26plus optional conductivity cell SBE 4M is shipped dry to prevent freezing in shipping Refer to Application Note 2D Instructions for Care and Cleaning of Conductivity Cells for conductivity cell cleaning procedures and cleaning materials CAUTIONS e Do not put a brush or any object inside the conductivity cell to dry it or clean it Touching and bending the electrodes can change the calibration Large e The Active Use after each cast section of the application note
129. ge Enable high accuracy external thermistor ExternalTemperature Enable conductivity sensor Conductivity Main operating current main and back up lithium battery voltages Last measured pressure psia and temperature C calculated salinity only if conductivity enabled psu Wave and tide sampling setup SetSampling Interval between tide samples and tide sample duration Interval between wave bursts Number of wave measurements burst wave sampling frequency and calculated wave sampling duration Start time for logging if enabled Stop time for logging if enabled Calculated number of tide samples day based on SetSampling Calculated number of wave bursts day based on SetSampling Calculated memory endurance based on SetSampling Calculated battery endurance based on SetSampling Number of tide measurements in memory Number of wave bursts in memory Number of tide measurements since logging was last started Number of wave bursts since logging was last started Transmit real time tide data TxTide Transmit real time wave data TxWave Transmit real time wave statistics SetSampling If yes real time wave statistic settings entered with SetSampling display Logging status is one of following never started waiting to start at logging started stop out of memory stop low battery stop time reached stopped by user unknown Logging is one of following NO send start comm
130. hanges shows Processing complete when done If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit 75 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus Y Axis Tab The Y Axis tabs define the Y axis variables scales and line types 2151 File Options Help Include this axis In plot Plot Data File Setup Plot Setup X Axis Y Axis1 Y Axis 2 Y Anis 3 Y Axis 4 can plot 1 X and up to 4 Y axes At least 1X and 1 Y variable IV Include axis is required so this selection m is available only on Variable Energy J m 2 auto spectrum x Y Axis 2 3 and 4 Note If you deselect an axis all axes numbered above that axis Selection dependent on Plot type are automatically deselected selected on Plot Setup tab Select to label axis with variable IV Label axis with variable name name as listed in drop down Variable list or enter a Custom Custom label l label for axis Select desired line type color and symbol Selection Line type ThinSoid z of color or monochrome A Thin Solid plot and inclusion of symbols in plot is made on Line Color E Line symbol y is Auto range Plot Data selects Plot Setup tab and applies to all axes axis Minimum and Maximum IV Auto range Minimum 9 0000 values number of Major divisions on axis and number Maximum f10 0000 of M
131. he fitting from the end cap with a 9 16 inch wrench Discard the fitting tubing and pressure bag 81 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus CAUTION Do not put a brush or any object in the pressure port Doing so may damage or break the pressure sensor Meniscus overflow from top of 7B Tighten with 9 16 inch wrench 9A tube through fitting and over needle 9B Draw we vacuum on bag until flat 4 Clean the pressure bag cavity in the lift eye and the removed pressure tube guard and pressure cover removing all residue grit Ensure that the holes in each corner of the pressure bag cavity in the lift eye are free of obstructions Clean the sensor end cap being careful to remove any residue grit near the pressure port From the 50025 pressure sensor oil refill kit fill the small syringe with the supplied oil Fill the pressure port forming a meniscus on the surface of the end cap Keep the SBE 26plus in the vertical position for at least 30 minutes before proceeding to allow any bubbles in the internal plumbing to rise to the surface Add oil from the small syringe as necessary to maintain the meniscus Install the supplied capillary fitting 50029 in the pressure port A As the fitting is installed oil should rise the length of the tube and overflow Wipe up the excess oil with a paper towel B Gently tighten the lower portion of
132. he pressure from psi to Pascals If the number of wave samples is not a power of two the array length is made a power of two by filling it with the last de meaned and de trended pressure value Next a Hanning window is applied to the time series to suppress the spectral leakage that occurs when the time series to be Fourier transformed contains a periodic signal that does not correspond to one of the exact frequencies of the FFT Physically this means that an integral number of waves does not fit in the time series When this occurs energy at one frequency leaks to other frequencies This causes errors when applying the frequency dependent dispersion transfer function to the transformed data The Hanning window has the form u t 1 cos at T 0 lt t lt T 10 The windowing operation reduces the total energy in the time series so each element is multiplied by the scale factor SF where SF 8 3 11 to obtain the correct magnitudes in later spectral estimates Finally each element in the time series is multiplied by the factor 6894 757 to convert the measured pressure from psi to Pascals 133 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Surface Wave Auto Spectrum The Finite Fourier transform of a time series with N points contains N raw spectral estimates at frequencies given by Fj j T e j 0 N 1 Hz 12 where T is the total time of the series seconds The first spectral estimate j
133. her information call National Pesticide Telecommunications Network NPTN at 1 800 858 7378 Net Contents Two anti foulant devices Sea Bird Electronics Inc EPA Registration No 74489 1 13431 NE 20 Street EPA Establishment No 74489 WA 1 Bellevue WA 98005 124 Manual version 018 Appendix V AF24173 Anti Foulant Device SBE 26plus PRECAUTIONARY STATEMENTS HAZARD TO HUMANS AND DOMESTIC ANIMALS DANGER Corrosive Causes irreversible eye damage and skin burns Harmful if swallowed Harmful if absorbed through the skin or inhaled Prolonged or frequently repeated contact may cause allergic reactions in some individuals Wash thoroughly with soap and water after handling PERSONAL PROTECTIVE EQUIPMENT USER SAFETY RECOMMENDATIONS Users should Remove clothing immediately if pesticide gets inside Then wash thoroughly and put on clean clothing Wear protective gloves rubber or latex goggles or other eye protection and clothing to minimize contact Follow manufacturer s instructions for cleaning and maintaining PPE If no such instructions for washables use detergent and hot water Keep and wash PPE separately from other laundry Wash hands with soap and water before eating drinking chewing gum using tobacco or using the toilet ENVIRONMENTAL HAZARDS Do not discharge effluent containing this product into lakes streams ponds estuaries oceans or other waters unless in accordance with the requirements of a Natio
134. ial vorticity yielding very long period waves called inertial waves Rossby and planetary waves Spectrum of Surface Waves in the Ocean Surface waves in the ocean occupy a broad range of wavelengths and periods e At extremely short periods the spectrum is dominated by capillary waves followed by a broad 1 20 second band of surface gravity waves mostly wind driven e Longer period gt 10 minutes gravity waves may occur in association with earthquakes and large scale meteorological systems storm surges e Tides which are another type of forced gravity wave dominate the spectrum in the 12 36 hour band e At longer periods inertial and planetary waves are prevalent gravity does not play a dominant role any longer See Pond and Picard Figure 12 1 Table 12 1 Appendix VIII References 127 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Definition of Terms a wave amplitude m D density of water Kg m E W H 8 total wave energy per unit area J m f T wave frequency Hz cycles sec g 9 80665 acceleration of gravity m sec h water depth m H 2a wave height m k 2 2 L wave number rad m L wave length m 0 phase angle radians Oo 2 n T radian frequency rad sec t time sec T wave period sec T total time of the wave burst series total sample period sec W D 8 specific weight of water Kg m sec
135. ic Pressure SBE 26plus Section 7 Tide Data Processing Merge Barometric Pressure Merge Barometric Pressure reads in a tide tid file created with Convert Hex and a barometric pressure bp file and subtracts barometric pressure from the tide data The time in the files does not need to be aligned Merge Barometric Pressure uses linear interpolation to align the data in time before pressure data such as that from a subtracting barometric pressure Merge Barometric Pressure can also convert local weather station See Input tide pressure to water depth in meters using average density and gravity Barometric Pressure File Format below for the required data format Both the input tide data and output adjusted file have a tid extension However Merge Barometric Pressure will not process a tid file that it has already processed preventing a user from erroneously removing barometric pressure multiple times from the tide data Note The barometric pressure bp file is not supplied by Sea Bird It is created by the user based on local barometric Remove barometric pressure as follows Note SeasoftWaves ini contains the location 1 In Seasoft for Waves Run menu select Merge Barometric Pressure The and file name of the last saved psa file File Setup tab looks like this for each module SeasoftWaves ini is t in 9 ERPROFILE Loeis p a ioixl Example C Documents and Settings File Options Help dbresko Local Set
136. ight 0 0000e 00 Average wave period 0 0000e 00 Maximum wave height 5 9477e 04 Significant wave height 0 0000e 00 Significant wave period 0 0000e 00 H1 10 0 0000e 00 H1 100 0 0000e 00 Note where See Appendix VI Wave Theory and Statistics for a description of calculation e Auto Spectrum Statistics f of wave statistics nAvgBand user input number of spectral estimates for each frequency band and next 4 lines are calculated not stored auto spectrum statistics e Time Series Statistics wave integration time sec wave burst duration user input number of samples burst sample duration and remaining lines are calculated not stored time series statistics 8 End the test by typing Stop and pressing the Enter key to stop logging You may need to press the Esc key before entering Stop to get the 26plus to stop if it is in the middle of sampling Verify that logging has stopped by clicking Status and checking that the last line of the DS response shows logging no 9 if ready for deployment A Type InitLogging and press the Enter key to make the entire memory available for recording If InitLogging is not sent data will be stored after the last recorded sample B To begin logging now Type Start and press the Enter key The 26plus should display logging will start in 10 seconds C To begin logging at a delayed start date and time Type SetStartTime press the Enter key and re
137. ines none horizontal and vertical horizontal vertical Grid style solid dotted or dashed line and whether to place Grid in front of plotted data Grid lines Horizontal and Vertical Grid style Thin Solid Line Grid in front Inside Background Color Outside Background Color ymbol size s mall v Symbol frequency Monochrome plot T Plot symbols only IV Show line legends Symbol plotting frequency 0 least frequent 9 most frequent if Monochrome plot selected If too frequent symbols create illusion of very thick line making details difficult to see Mark data points I Show plot shadow e Mark data points Mark each individual data point with a dot and connect Auto range padding fp Process Unione dots If not selected Plot Data just draws a continuous line between data points Show plot shadow Create shadow effect to bottom and right of axes Select number of wave bursts or tide scans to process and number to Space between axes and maximum and minimum plotted values if Auto range selected on Axis tabs For 0 maximum and minimum values plot on axes Start Process aa Cancel Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes skip at start of data file Default is to process all dat
138. ing the 26p us may be making a wave burst measurement You cannot communicate with the 26p us while it is making a wave burst Note measurement Wait until you think the wave burst is complete and try to Interrupting a tide measurement and or establish communications again If you have programmed a long wave burst wave burst by pressing the Esc key and need to establish communications now press Esc to interrupt the wave will affect the quality of your data For burst this interrupts the current wave burst but does not stop logging The high quality data Sea Bird 26plus will fill out the remaining data in the interrupted wave burst with 0 s recommends the following to allow querying the 26plus during logging i A 3 Cause Solution 5 If attempting to communicate with the 26p us with Strain without interrupting measurements Gauge pressure sensor after you started logging the 26p us may be making a tide measurement You cannot communicate with the 26p us while it is e Set sampling parameters with enough time between i measurements and making a tide measurement Wait until you think the tide measurement is Schedule time queries when the complete and try to establish communications again If you need to establish 26plus is not measuring tides of communications now press Esc to interrupt the tide measurement this concern only for 26p us with Strain interrupts the current tide measurement but does not stop logging The 26
139. ing prompts and enter the desired parameters for the statistics optional conductivity sensor installed from last tide measurement and go to sleep enter quiescent state Equivalent to sending SL and then sending QS Example user input in bold S gt SL or SLO p 14 5266 t 22 7003 s 29 05335 SLT Send pressure pressure temperature temperature and conductivity and salinity if optional conductivity sensor installed from last tide measurement and do not go to sleep do not enter quiescent state Example user input in bold S gt SLT p 14 2135 pt 21 952 t 21 0250 c 4 81952 s 34 3799 SLWT Send wave time series statistics from last wave measurement and do not go to sleep do not enter quiescent state Data order wave integration time number of waves total variance total energy average wave height average wave period maximum wave height significant wave height significant wave period H1 10 H1 100 Example user input in bold S gt SLWT 1024 4522 3 2324e 22 1 2087e 15 2 3467e 28 2 7947e 20 4 041le 31 5 8921e 02 1 0246e 02 2 2650e 13 0 0000e 37 SLWS Send wave auto spectrum statistics from last wave measurement and do not go to sleep do not enter quiescent state Data order number of spectral estimates for each frequency band total variance total energy significant period significant wave height Example user inpu
140. inor divisions between Major divisions I Auto divisions Major a Auto divisions Plot Data selects number of major Minor he divisions on axis and number of minor divisions between major divisions User selects axis Minimum and Maximum values Any values that fall outside Start Process w Baca user selected Minimum to Maximum range plot at minimum or maximum as applicable Solid Upward Triangle Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes Click Start Process to begin processing data Status field shows Processing complete when done If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit 76 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus Viewing and Outputting Plots Eee Plot Data Yew i Output Gptions view 5 x Weve Time Serles Piot 2424 00 21 2H WT 0 04 Use View menu or keyboard Arrow Home or End keys to switch between plots for each 200 Notes e The first wave burst is labeled 0 e To change the default printer in Windows XP Click Start Printers and Faxes A list of printers installed on your system appears with a check mark next to the default printer Right click on the desired print
141. ion 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus 7 Test the setup by typing Start and pressing the Enter key to begin logging Notes e See Appendix Il Sample Timing for a detailed description of when tide If the DS response shows logging start time do not use and wave measurements are made start time use start time in SetSampling prompt is No the 26plus and stored in memory responds When transmitting real time tide data each tide measurement record logging will start in 10 seconds displays after the tide duration is complete For example if the tide duration is 10 minutes the first tide If the DS response shows transmit real time tide data YES data displays 10 minutes after real time tide data was enabled with TxTide Y each time the 26plus logging starts completes a tide measurement the display looks like this Tide start time 26 Jan 2006 13 40 01 p 14 2135 pt 21 952 t 21 0250 c 4 81952 s 34 3799 where e start time start of tide measurement p calculated and stored pressure psia pt calculated pressure temperature not stored C t calculated and stored temperature C c calculated and stored conductivity S m and s calculated salinity not stored psu Note that c and s display only if DS response shows conductivity YES conductivity acquisition is enabled with Conductivity Y If the DS response shows transmit real tim
142. iptive headings to the pressure or depth temperature and optional conductivity and salinity columns The presence of headings in the tid file indicates that it has been processed by Merge Barometric Pressure See Appendix III Data Formats 62 Manual version 018 Section 7 Tide Data Processing Merge Barometric Pressure SBE 26plus Input Barometric Pressure File Format ick The required format for the input barometric pressure bp file is ote The barometric pressure bp file is MM DD YY HH MM SS P not supplied by Sea Bird It is created MM DD YY HH MM SS P by the user based on local barometric pressure data such as that from a where local weather station MM month DD day YY year HH hour MM minute SS second P barometric pressure in psia or millibars 1 standard atmosphere 14 7 psia or 1013 5 millibars Example bp File 07 01 94 00 00 00 1015 5 07 01 94 01 00 00 1016 4 07 01 94 02 00 00 1017 3 Merge Barometric Pressure Algorithm The linear interpolation algorithm is Pop pO t t0 p1 pO t1 t0 corrected pressure p Ppp where t time of tide sample in tid file p pressure in tid file at time t t0 latest time in bp file that is less than or equal to t p0 barometric pressure at time t0 tl earliest time in bp file that is greater than or equal to t pl barometric pressure at time t1 Pop interpolated barometric pressure Depth is calculated as
143. isturbed water surface Equation 3 is the essential result required to relate subsurface pressure to surface wave height For a given pressure frequency component P f the transfer function used to obtain surface wave amplitude a f from subsurface pressure is a f P f WwK fz im 5 For deep water waves kh gt gt 1 and h L gt 0 5 equation 3 takes the form p WwAe Pa 6 which clearly represents an exponential decay with depth For shallow water waves hk lt lt 1 and h gt L 2 equation 3 takes the form p WwA Pa 7 which is simply the hydrostatic equation 131 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Note Frequencies greater than fmax are processed if Use filter cutoff is selected in Process Wave Burst Data The table below developed with Plan Deployment shows pressure attenuation p bottom p surface vs bottom depth for waves with T 2 5 10 20 and 25 seconds Water Sensor Height Wave Period seconds Depth above Bottom meters meters 25 20 10 5 2 2 0 0 99 0 99 0 96 0 84 0 25 4 0 0 99 0 98 0 92 0 70 0 04 8 0 0 97 0 96 0 84 0 45 15 0 0 95 0 93 0 72 O17 20 0 0 94 0 90 0 63 0 08 30 0 0 91 0 85 0 48 0 02 40 0 0 87 0 81 0 35 50 0 0 84 0 76 0 25 75 0 0 77 0 65 0 1 100 0 0 70 0 55 0 04 Pressure
144. iven by A F _ A f The Inverse Fast Fourier Transform IFFT is taken to construct the surface time series 137 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus The influence of the Hanning window is removed with a deconvolution in the time domain each point x is multiplied by the inverse of the Hanning window w corresponding to the same time point This procedure is unstable near the end points where w 0 Therefore the time series is set to 0 at the beginning and end where the window reaches 1 of its maximum value Finally each point in the time series is multiplied by 1 sqrt 8 3 to compensate for the initial scaling of the time series Total Variance and Energy The unbiased sample variance is a fundamental statistical measure of the time series Variances from different bursts can be compared to see if the wave field is stationary or changing The unbiased estimator for the variance is N 1 lt o gt 17 NA Sees el m 30 j 0 where u is the sample mean In this case the mean is zero since the time series has been de meaned The variance obtained from the reconstructed time series can be compared with the total variance obtained from the auto spectrum 25 as a check on the goodness of the time series reconstruction An estimate of the total wave energy contained in the record is E W lt o gt J m 31 Average Wave Height and Period H T avg avg Since the
145. l elements where inverse Hanning factor is greater than 10 Performs zero crossing analysis of surface wave time series to create an array of individual waves and their corresponding periods Sorts wave array in ascending order Calculates wave statistics from surface wave time series average wave height average period maximum wave height significant period significant wave height Hi3 Hijo Histo 67 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus Create Reports Summarize Wave Data Create Reports creates a file containing one line of surface wave time series and or wave burst auto spectrum statistics for each processed wave burst The input wts file contains surface wave time series statistics and the input was file contains wave burst auto spectrum statistics these files are created in Process Wave Burst Data The output r26 file format is user defined and can contain one or more of the following variables Variable Column Label time time burst number burst pressure sensor depth depth number of waves nwaves variance var wts From Surface Wave Energy energy wts Time Series Statisties average wave height avgheight wts File average wave period avgper maximum wave height maxheight significant wave height swh wts significant wave period swp wts EL jag H1 10 F966 H1 100 arian ar wa From Wave Burst emer ae Auto Spe
146. lace the locking sleeve over the connector plug Tighten the locking sleeve finger tight only Do not overtighten the locking sleeve and do not use a wrench or pliers If not using the SBE 4M conductivity sensor install a dummy plug and locking sleeve on the 26p us 3 pin bulkhead connector Use the technique described in Step 1 for lubricating and burping a standard connector Optional Install the SBE 4M conductivity sensor A Mount the SBE 4M to the 26plus with the supplied mounting bracket positioning the SBE 4M connector towards the conductivity connector on the 26plus Connect the SBE 4M to the 26plus with the supplied cable using the technique described in Step 1 for lubricating and burping a standard connector and then installing the locking sleeve Remove the Tygon tubing that was looped end to end around the SBE 4M conductivity cell to keep the cell clean while stored See Application Note 70 Installing Anti Foulant Device Mount Kit on SBE 4 16 19 and 21 Conductivity Cells and Appendix V AF24173 Anti Foulant Device Optional Mount the 26plus in the Sea Bird mounting fixture A B C D Slide the mooring pin through the 26plus lift eye hole in the direction shown Install the retaining ring in the lift eye hole recess to hold the mooring pin to the 26plus Push part of the retaining ring into the recess and hold it in place with a small tool such as tweezers or small screwdriver Using another pair
147. less steel for screw 30145 e 30447 Bolt 20 x 1 Hex titanium secures life eye to connector end cap and plastic bar to battery end cap e 30493 Machine screw 10 24 x 1 Hex titanium secures connector end cap to housing e 30552 Retaining ring secures mooring pin for optional mounting fixture to lift eye e 30816 Parker 2 234E603 70 battery end cap to housing piston seal e 30090 Parker 2 153N674 70 battery end cap to housing face seal e 30815 Parker 2 233E603 70 connector end cap to housing radial piston seal Continued on next page 142 Manual version 018 Appendix IX Replacement Parts SBE 26plus Continued from previous page Part eee foe Quantity Number Part Application Description in 26plus 3 pin RMG 3FS to 17695 3 pin RMG 3FS cable oo to optional 1 0 28 m 11 in long conductivity sensor 3 pin to MCIL 3FS wet pluggable 171752 connector to ee PA owe 1 3 pin RMG 3FS cable 3 0 28 m 11 in long 4 pin RMG 4FS to 801225 DB 9S data T O cable EE 26p us to computer for 1 2 4 m 8 ft long standard RS 232 interface 4 pin MCIL 4FS wet pluggable From 26plus to computer for 801374 eomnerion to standard RS 232 interface l DB 9S data I O cable 2 4 m 8 ft long 6 pin AG 206 to 801584 pe gt data VO cable A E H 2 4 m 8 ft long i 6 pin MCIL 6FS wet 802124 pluggable connector to From 26p us to computer
148. line of response T Output real time wave statistics programmed into 26plus with SetSampling shows firmware version Real time wave statistics samples per burst Wave burst duration seconds 1024 T Time required to calculate real time Wave samples burst Wave sample duration and memory storage requirements Wave statistics duration seconds 0 El Nominal alkaline battery endurance days 1011 3 Battery capacity daily power consumption e Alkaline batteries 5 year battery Nominal lithium battery endurance days 2791 3 discharge and capacity derated 15 e Lithium batteries 3 year battery Based om input Sampling scheme 32 MB Memory endurance days 676 1 discharge and capacity derated 15 Warning deployments longer than 2 years are not recommended with alkaline batteries Click Calculate to calculate battery endurance and memory endurance f Help Exit Tide interval Tide interval Tide interval Tide interval Notes e This drawing is schematic only intended to define the sampling scheme terminology See Appendix II Sample Ry of wave Timing for timing details Tide poe e See Command Descriptions in Section 5 SBE 26plus duration Setup Installation and Data Upload SeatermW for programming desired sampling scheme in 26plus e If only interested in tide data see Using SBE 26plus as a Wave sample Tide Record
149. loyment corrections pressure temperature and conductivity calibration coefficients in the for pressure sensor drift on the instrument EEPROM View the coefficients by sending DC in SeatermW uploaded verify that the calibration coefficients match the instrument Calibration Certificates If necessary modify calibration coefficient s by sending the appropriate coefficient command s see Command Descriptions in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW 89 Manual version 018 Glossa SBE 26plus Glossary Battery and Memory Endurance Seasoft for Waves module for calculating power endurance and memory endurance for a user specified sampling scheme Convert Hex Seasoft for Waves module for converting uploaded hex file into separate wave wb and tide tid files Create Reports Seasoft for Waves module for outputting one line of surface wave time series and or wave burst auto spectrum statistics for each processed wave burst Extract Tide Program to split uploaded data from multiple deployments into separate files before converting and processing the data ExtractTide exe is not incorporated in Seasoft for Waves Run menu but is automatically installed when you install Seasoft for Waves in the same directory as Seasoft for Waves Fouling Biological growth in the conductivity cell during deployment Merge Barometric Pressure Seasoft for Waves module for removi
150. ludes a wave burst Tide power measurement 1 3 0 3 0 3 0 4 1 74 4 04 joules measurement Total tide power day 4 04 joules measurement 24 measurements day 97 0 joules day Wave sample Wave burst duration 0 25 seconds 4096 measurements 1024 seconds burst Wave burst 0 11 watt 1024 seconds burst 112 64 joules burst Total wave power day 112 64 joules burst 4 bursts day 450 6 joules day Alkaline battery capacity 756 000 joules 0 85 derate for safety 642 600 joules Derating 5 per year for battery self discharge 0 05 642 600 joules 365 days per year 88 joules day Total power consumption 97 0 joules day 450 6 joules day 88 joules day 635 6 joules day Number of days of battery capacity 642 600 joules 635 6 joules day 1011 days 2 77 years As a check compare with the output of Battery and Memory Endurance on the 26plus Quartz tab the program shows the same results Although the battery capacity is 2 77 years the program provides a warning that deployments longer than 2 years are not recommended with alkaline batteries Additionally the program calculated that the memory endurance is only 676 days 1 85 years which is the limiting factor in deployment length for this sampling scheme see Memory Endurance for example calculation 25 Manual version 018 Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance SBE 26plus Battery Endurance wi
151. me the tide e If tide duration lt tide interval 10 sec and duration and T and C timing depend wave burst duration real time wave statistics calculation gt on whether a wave burst occurs during tide interval tide duration 10 sec the tide interval Consequently do Wave burst sampling is done instead of the applicable tide measurement not use this scheme if you want tide and for that tide the data from the entire wave burst is averaged to pressure and T and C data at calculate the tide measurement See Strain Gauge Example 2 regular intervals Tide interval Tide interval Tide duration 2 sec Sleep gt 8 sec Wave duration 2 sec Sleep T amp C wave samples burst T amp C gt 8 sec measurement wave sample duration measurement Note Wave data also used to calculate tide Realtime wave statistics calculation if selected Strain Gauge Example 2 Tide interval 15 minutes 900 sec tide duration 3 minutes 180 sec Wave burst of 1024 samples at 0 75 sec sample 1024 x 0 75 768 sec 12 minutes 48 seconds every 2 tide measurements Calculate real time wave statistics on 512 samples wave burst 512 x 0 06 sec calculation 30 7 sec required at end of wave burst Set SetStartTime to 12 00 00 Checking setup tide duration 180 sec lt tide interval 10 sec 900 10 890 sec wave burst duration real time wave statistics 768 30 7 799 sec gt tide interval tide duration 1
152. me wave statistics on 512 samples wave burst 512 x 0 06 sec calculation 30 7 sec required at end of wave burst Set SetStartTime to 12 00 00 Checking setup tide duration 300 sec lt tide interval 20 sec 900 20 880 sec wave burst duration real time wave statistics 128 30 7 159 sec lt tide interval tide duration 20 sec 900 300 20 580 sec Time Time Begin End Wave End Wave Time Stamp Begin P for End P for Begin T amp C EndT amp C Stamp Wave Burst amp Begin Statistic for Tide Tide for Tide for Tide for Wave Burst Wave Statistic Calculation Tide Burst Calculation 12 00 00 1 1 E 5 p h 12 05 00 1 1 5 z a gt 12 05 02 2 1 z F 2 12 15 00 2 2 7 e S F 5 12 20 00 2 2 i a E 12 20 02 2 1 1 z 12 22 10 E B z 1 12 22 41 7 z A F 1 12 30 00 3 3 5 2 z z 12 35 00 3 3 12 35 02 3 z A z z 12 45 00 4 4 p 7 12 50 00 4 4 E 12 50 02 4 2 2 z 2 12 52 10 s 7 3 2 Z 12 52 41 2 g E x z 2 97 Manual version 018 Appendix Il Sample Timing SBE 26plus Note As shown for this scheme the tide duration and T and C timing depend on whether a wave burst occurs during e If tide duration lt tide interval 20 seconds and wave burst duration
153. message and will not take On board lithium batteries non hazardous units which are unrestricted for measurements shipping purposes are provided to back up the buffer and the real time clock in the event of main battery failure exhaustion or removal The main batteries can be replaced without affecting either the real time clock or the memory If the main power supply falls below 9 VDC the 26p us will draw power from the back up lithium batteries External Power and Cable Length Note f There are two issues to consider if powering the SBE 26plus externally a EAA e Limiting the communication IR loss to 1 volt if transmitting real time see data higher IR loss will cause the instrument to transmit data that does cable length if transmitting real Bape time data not meet the RS 232 communication standard e Supplying enough power at the power source so that sufficient power is available at the instrument after considering IR loss Each issue is discussed below Note Limiting Communication IR Loss to 1 Volt if Transmitting Common wire resistances Real Time Data Resistance ohms foot 0 0016 The limit to cable length is typically reached when the maximum current Tha during communication times the power common wire resistance is more than 0 0064 1 volt 0 0081 V limit 1 volt IR limit 0 0107 Maximum cable length R jimit Wire resistance per foot eee where I maximum current required by 26p us during communication
154. mples taken at sea during profiling Conductivity Sensor Calibration The optional SBE 4M conductivity sensor incorporates a fixed precision resistor in parallel with the cell When the cell is dry and in air the sensor s electrical circuitry outputs a frequency representative of the fixed resistor This frequency is recorded on the Calibration Certificate and should remain stable within 1 Hz over time The conductivity sensor calibration certificate shows the following coefficients g h i j Cpcor and Ctcor View and or modify these coefficients in Convert Hex s Coefficient Configuration dialog box and in the 26p us EEPROM e Cpcor makes a correction for the highly consistent change in dimensions of the conductivity cell under pressure The default is the compressibility coefficient for borosilicate glass 9 57 x 10 Some sensors fabricated between 1992 and 1995 serial numbers between 1100 and 1500 exhibit a compression that is slightly less than pure borosilicate glass For these sensors the hermetic epoxy jacket on the glass cell is unintentionally strong creating a composite pressure effect of borosilicate and epoxy For sensors tested to date this composite pressure coefficient ranges from 9 57 x 10 to 6 90 x 10 with the latter value producing a correction to deep ocean salinity of 0 0057 PSU in 5000 dbars pressure approximately 0 001 PSU per 1000 dbars Before modifying Cpcor confirm that the sensor behaves
155. nal Pollutant Discharge Elimination System NPDES permit and the permitting authority has been notified in writing prior to discharge Do not discharge effluent containing this product to sewer systems without previously notifying the local sewage treatment plant authority For guidance contact your State Water Board or Regional Office of EPA This material is toxic to fish Do not contaminate water when cleaning equipment or disposing of equipment washwaters PHYSICAL OR CHEMICAL HAZARDS Do not use or store near heat or open flame Avoid contact with acids and oxidizers DIRECTIONS FOR USE It is a violation of Federal Law to use this product in a manner inconsistent with its labeling For use only in Sea Bird Electronics conductivity sensors Read installation instructions in the applicable Conductivity Instrument Manual 125 Manual version 018 Appendix V AF24173 Anti Foulant Device SBE 26plus STORAGE AND DISPOSAL PESTICIDE STORAGE Store in original container in a cool dry place Prevent exposure to heat or flame Do not store near acids or oxidizers Keep container tightly closed PESTICIDE SPILL PROCEDURE In case of a spill absorb spills with absorbent material Put saturated absorbent material to a labeled container for treatment or disposal PESTICIDE DISPOSAL Pesticide that cannot be used according to label instructions must be disposed of according to Federal or approved State procedures under Subtitle C of the Resource C
156. nal thermistor 0 01 C accuracy 0 001 C resolution e Wet pluggable MCBH bulkhead connectors in place of standard connectors e Mounting fixture e RS 422 RS 485 full duplex interface in place of RS 232 interface e Lithium batteries six DD drop in batteries with buttons for longer deployments lithium batteries not supplied by Sea Bird Note that one lithium DD battery is shorter than two alkaline D batteries so a different battery cover plate is required if using the lithiums cover plate available Notes from Sea Bird e Help files provide detailed information on Seasoft for Waves e Seasoft for Waves data processing modules cannot process real time data from the 26plus e Sea Bird supplies the current version of our software when you Future upgrades and enhancements to the SBE 26p us firmware can be easily installed in the field through a computer serial port and the Data I O bulkhead connector on the 26plus without the need to return the 26plus to Sea Bird purchase an instrument As software revisions occur we post the revised software on our FTP site See our The 26plus is supplied with a modular Windows software package Seasoft for website www seabird com for the Waves The software provides pre deployment planning communication with latest software version number a the 26plus for setup and uploading of data separation of the uploaded data into description of the software changes separate wave and tide fil
157. nch to continue turning the screws Turn each screw 1 2 turn at a time As you turn the jackscrews the end cap will push away from the housing When the end cap is loosened pull it and the PCB assembly out of the housing Remove any water from the O ring mating surfaces inside the housing with a lint free cloth or tissue Be careful to protect the O rings from damage or contamination Disconnect the Molex connector connecting the PCB assembly to the battery compartment bulkhead Remove the jackscrews from the end cap 121 Manual version 018 Appendix IV Electronics Disassembly Reassembly SBE 26plus Reassembly Note Before delivery a desiccant package is inserted in the housing and the electronics chamber is filled with dry Argon gas These measures help prevent condensation To ensure proper functioning 1 Install a new desiccant bag each time you open the electronics chamber If a new bag is not available see Application Note 71 Desiccant Use and Regeneration drying If possible dry gas backfill each time you open the housing If you cannot wait at least 24 hours before redeploying to allow the desiccant to remove any moisture from the housing Note that opening the battery compartment does not affect desiccation of the electronics Remove any water from the O ring and mating surfaces with a lint free cloth or tissue Inspect the O ring and mating surfaces for dirt nicks and cuts Clean or re
158. nd output converted data C 26p us runs continuously during test drawing current Press Esc key or click Stop to stop test TTR Sample temperature and output raw data A D counts 26p us runs continuously during test drawing current Press Esc key or click Stop to stop test FR Measure and display frequencies Hz Column Output tf pressure frequency 1 displays only if Quartz pressure sensor pf pressure temperature compensation frequency displays only if Quartz pressure sensor cf conductivity frequency 3 displays only if conductivity enabled with Conductivity Y 26plus runs continuously during test drawing current Press Esc key or click Stop to stop test 48 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Diagnostic Commands continued VR FlashInit FlashGood 49 Measure and display power Column Output 1 Main battery voltage 11 18 2 Back up lithium voltage 4 8187 3 Operating current mA 20 04 4 Ground voltage 26plus runs continuously during test drawing current Press Esc key or click Stop to stop test Map bad blocks and erase FLASH memory 2048 blocks destroying all data 26plus requires you to enter FlashInit twice to provide verification before it proceeds All data bits are set to 1 Tide and wave sample number are set to 0 Test takes approximately 1 hour and ca
159. nd time file always shows the DD 3FC3AE7940091B5E63 tide data pressure temperature and time command so the file looks 3FC4F77981091B5F8F tide data pressure temperature and time exactly the same regardless 000000000000000000 flag beginning of wave burst of whether ASCII or binary 091B60080200000000 time of beginning of wave burst number of samples in burst upload was used 000005000000000000 pressure temperature compensation number number of samples in burst 18FD5B18FD64 wave burst pressure data es eS wave burst pressure data 18FDCF18FDD5 wave burst pressure data FFFFFFFFFFFFFFFFFF flag end of wave burst 3FC56079C0091B60BB tide data pressure temperature and time 3FC1017A47091B61E7 tide data pressure temperature and time 3FC1097AC9091B6313 tide data pressure temperature and time 000000000000000000 flag beginning of wave burst 110 Note If you uploaded data in binary SeatermW sent DBbaud b e instead of DD However the uploaded hex file always shows the DD command so the file looks exactly the same regardless of whether ASCII or binary upload was used Manual version 018 Appendix Ill Data Formats SBE 26plus The beginning of a sample hex file for a 26p us with Strain Gauge pressure sensor and with conductivity follows beginning of file with DS and DC response same as shown above except DS response shows conductivity YES the calculated memory endurance and batt
160. ndicated For example if the wave period of interest T is 10 sec and the water depth h is 100 meters the parameter h gT 0 1 This means that H gT must be less than 0 001 for the theory to be valid which translates into a maximum wave height of 1 meter 0 001 0 002 0 005 0 01 0 02 0 05 0 1 0 2 h gT Range of Validity of Linear Wave Theory Theory Valid for Values Below Curve A final rule of thumb is that estimates of surface wave heights should be accurate within 5 provided z L lt 0 3 to 0 5 where z is the depth of the instrument below the surface and L is the wavelength of the observed waves 130 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Subsurface Pressure Due to Surface Gravity Waves As a surface wave passes over a subsurface position the elevation and depression of the sea surface causes a differential subsurface pressure disturbance This pressure disturbance decays with depth according to the relation p WwA t K fz Pa 3 where the vertical pressure response function is K z cosh k h z cosh kh dimensionless 4 where A t defined by 1 water surface displacement which varies between a and a meters W specific weight of water near the surface h water depth k wave number radians m calculated for a given wave period and depth with the dispersion relation 2 z vertical distance m from the measurement point to the mean und
161. ndurance to See Specifications in Section 2 calculate the endurance for a user specified sampling scheme Description of SBE 26plus for power and memory specifications In Seasoft for Waves Run menu select Battery and Memory Endurance Click on one of the SBE 26plus tabs in the dialog box The dialog box looks like this fe Battery and Memory Endurance File Help 26plus with Quartz and with Strain Gauge Enter tide measurement interval tide measurement duration number of tide measurements between each wave burst wave samples burst wave sample duration and whether conductivity is also measured Tide measurement interval minutes oe eel SIT iy into Tide measurement duration seconds Conductivity pressure sensor have different power requirements To verify pressure sensor type send status DS command in SeatermW i third line of response shows pressure sensor type SBE 26plus Quartz SBE 26plus Strain SBE 26 SB4 Measure waves every N tide samples N Wave samples per burst 26plus firmware gt 6 0 allows for output of real time wave statistics Earlier versions could only output real time wave burst pressure M Conductivity frequencies To verify firmware version send status DS command in v Firmware version 6 0 or greater lt total wave samples burst Real time setup is Wave sample duration seconds Real time statistics samples burst must be SeatermW first
162. ng 46 Power 16 external 16 Power consumption 11 Power endurance 24 Pressure attenuation 22 Pressure sensor maintenance 81 Pressure sensor calibration 85 Pressure to depth conversion 140 Process Wave Burst Data 64 Programming for deployment 28 Q Quick start 7 R Real time data 38 40 Real time data format 102 Real time setup baud rate 18 cable length 18 Recovery 55 References 141 Replacement parts 142 Reset memory 43 Revision history 144 147 S Sample timing 95 SBE 4M maintenance 84 Seasoft for Waves 20 Convert Hex 58 Create Reports 68 Extract Tide 58 file extensions 21 102 file formats 21 102 installation 19 Merge Barometric Pressure 61 Plan Deployment 22 Plot Data 72 Process Wave Burst Data 64 SeatermW 28 statistics 127 theory 127 updates 19 SeatermW 28 Send last sample 46 Sensors 11 Separating wave and tide data 58 Sequence 95 Setting time 37 53 Setting up SBE 26plus 28 Software statistics 127 theory 127 Software use 20 Specifications 11 Start and stop logging 40 44 Statistics 127 141 Status 35 Storage 79 84 Super O Lube 91 Synchronizing time 53 T Temperature 37 Temperature sensor calibration 86 Testing 48 Testing SBE 26plus 28 Theory 127 141 Tide data 116 Tide data plotting 72 Tide data processing 58 61 Tide setup 39 Tides only 52 Time 37
163. ng and will be doing an ASCII upload x byte number for first byte when sampling begins Use ByteCount to recover data if you accidentally initialize logging before uploading and will be doing a binary upload Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Logging Commands Notes e With Quartz pressure sensor You can wake up the 26p us during a tide measurement and display status press Enter key to get s gt then click Status without interrupting logging e With Strain Gauge pressure sensor You cannot wake up the 26p us during a tide measurement and display status See General Command Notes above e You may need to send Stop several times to get the 26p us to respond e You must stop logging before uploading data e If Use start time in the SetSampling prompt is Yes and SetStartTime is less than 10 seconds in the future when Start is sent the 26plus ignores the programmed start time and starts logging in 10 seconds e If Use stop time in the SetSampling prompt is Yes and SetStopTime is less than 1 hour after logging begins the 26plus ignores the programmed stop time and continues logging until Stop is sent e See Setting Time in SBE 26plus to Synchronize Sampling of Multiple Instruments below to set multiple instruments to start logging at the same time To start logging send Start e If Use start time in SetSampling prompt i
164. ng barometric pressure from tide data PCB Printed Circuit Board Plan Deployment Seasoft for Waves module for calculating the ratio of pressure amplitude measured by the instrument to pressure amplitude at the surface and predicting number of frequency bands calculated width of each band and frequency span Plot Data Seasoft for Waves module for plotting wave and tide data Process Wave Burst Data Seasoft for Waves module for computing wave statistics Seagauge High accuracy wave and tide recorder with a quartz or strain gauge pressure sensor precision thermometer and optional SBE 4M conductivity sensor Seasoft for Waves DOS Modular DOS program for use with the SBE 26 Seasoft for Waves DOS is not compatible with the 26plus Seasoft for Waves Modular Win 95 98 NT 2000 XP program for pre deployment planning communication with the 26p us for setup uploading of data from the 26p us separation of uploaded data into separate wave and tide files removal of barometric pressure from tide data statistical analysis and data plotting Modules include Plan Deployment Battery and Memory Endurance SeatermW Convert Hex Merge Barometric Pressure Process Wave Burst Data Create Reports and Plot Data SeatermW Seasoft for Waves module for communication with the 26plus for setup and uploading of data from the 26plus 90 Manual version 018 Glossary SBE 26plus Super O Lube Silicone lubricant use
165. ng a conductivity sensor with the 26plus the next highest power draw is 0 225 watts for 26p us with Quartz pressure or 0 2 watts for 26plus with Strain Gauge pressure conservatively use 0 225 watts for both Use 12 V minimum input voltage to calculate I V watts With conductivity I 0 33 watts 12V 0 028 amps Without conductivity I 0 225 watts 12V 0 019 amps Example 1 For 20 gauge wire what is maximum distance to transmit power to 26plus with an integrated conductivity sensor from a 12 VDC power supply The 26plus external power specification is 12 20 VDC The battery cut off point at which 26p us stops taking measurements is 10 4 V Therefore a 1 6 V IR drop 12 V 10 4 V would still provide enough power to the 26plus V IR_ 1 4V 0 028 amps 0 0107 ohms foot cable length Maximum cable length 4670 ft 1420 meters Note that 1420 meters lt 1675 meters maximum distance if 26p us is transmitting real time data so IR drop in power is controlling factor for this example Using a higher voltage power supply or a different wire gauge would increase allowable cable length Example 2 Same as above but there are 4 instruments powered from same power supply 1 4V 0 028 amps 4 instruments 0 0107 ohms foot cable length Maximum cable length 1168 ft 356 meters to 26plus furthest from power source Data I O The SBE 26plus receives setup instructions and outputs diagnostic informa
166. ng to begin in multiple instruments at the same time e Send the SetStartTime command to the 26plus The 26p us prompts you to enter the desired start date and time e Send the SetSampling command Set up the desired sampling scheme and enter Y in response to the Use start time prompt 53 Manual version 018 Section 5 SBE 26p us Setup Installation and Data Upload SeatermW SBE 26plus Installing and Deploying SBE 26pl us CAUTION Do not use WD 40 or other petroleum based lubricants as they will damage the connectors Note Enable acquisition of conductivity data by sending Conductivity Y in SeatermW when programming the 26plus for deployment Mooring pin Install retaining ring in recess after inserting mooring pin Rotate 26plus into mounting fixture 1 Install a cable if transmitting real time tide and or wave data or dummy plug for the data I O connector 4 pin for standard RS 232 6 pin for optional RS 422 RS 485 on the 26plus end cap A B Lightly lubricate the inside of the cable connector plug with silicone grease DC 4 or equivalent Standard Connector Install the connector plug aligning the raised bump on the side of the plug with the large pin pin 1 ground on the 26plus Remove any trapped air by burping or gently squeezing the plug near the top and moving your fingers toward the end cap OR MCBH Connector Install the connector plug aligning the pins P
167. ngular area to enlarge details 78 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Section 10 Routine Maintenance and Calibration This section reviews corrosion precautions connector mating and maintenance battery replacement pressure sensor maintenance optional conductivity cell storage and cleaning and sensor calibration The accuracy of the SBE 26plus is sustained by the care and calibration of the sensors and by establishing proper handling practices Corrosion Precautions Rinse the SBE 26p us with fresh water after use and prior to storage The SBE 26plus has a plastic housing with a titanium end cap No corrosion precautions are required but avoid direct electrical connection of the titantum end cap to dissimilar metal hardware The optional SBE 4M conductivity cell has a titanium housing No corrosion precautions are required but avoid direct electrical connection of the titanium to dissimilar metal hardware Connector Mating and Maintenance Note See Application Note 57 Connector Care and Cable Installation CAUTION Do not use WD 40 or other petroleum based lubricants as they will damage the connectors Clean and inspect connectors cables and dummy plugs before every deployment and as part of your yearly equipment maintenance Inspect connectors that are unmated for signs of corrosion product around the pins and for cuts nicks or other flaws that may
168. nnot be interrupted once it has started Send FlashInit after uploading all data if there are FLASH Read errors in Status DS response If not encountering errors use of command is optional as 26plus writes over previously recorded information when InitLogging is used before beginning sampling However knowledge of initial memory contents i e all 1 s can be a useful cross check when data is retrieved Display number of good blocks in FLASH memory should be 2008 to 2048 blocks with each block 16K bytes If number of good blocks not in this range consult factory Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Calibration Coefficients Commands Notes e Dates shown are when calibrations were performed Calibration coefficients are initially factory set and should agree with Calibration Certificates shipped with 26plus e See individual commands below to modify calibration coefficients e Calibration coefficients are applied to the raw data to output real time and queried SL SLO and some testing commands data in engineering units e Pressure temperature and conductivity are stored in memory as raw data before application of calibration coefficients e Data is uploaded from memory to a hex file as raw data and or partially processed data depending on the parameter and whether the data is for waves or tides see Appendix III Data Forma
169. nu in SeatermW allows Software to provide accurate time you to set the date and time in the SBE 26plus to an accuracy of 25 msec of on your computer is not supplied by the time provided by the timekeeping software This may be useful if you plan Sea Bird to deploy several instruments and want to coordinate sampling so that each 26plus measures tides and waves on exactly the same schedule Coordinating sampling can be accomplished by e Setting the time in each instrument accurately using the DateTime menu e Setting up each instrument to sample at the same intervals and durations and e Setting up each instrument to start sampling at a delayed date and time using the same start date and time for each instrument Set accurate time and coordinate sampling as follows 1 In SeatermW click DateTime The following dialog box appears Click to set date and time to UTC time Greenwich Mean Time Set UTC Time k SeatermW sends DateTime command to 26plus Set Local Time Click to set date and time to local time SeatermW sends DateTime Waiting for user selection command to 26plus Exit Help Click Exit to return to SeatermW main window Click the desired time setting UTC or local time SeatermW sends the DateTime command to the 26plus using the computer date and time Click Exit 2 Ifdesired set up the 26plus to start logging at some time in the future allowing you to coordinate sampli
170. o spectrum statistics 117 wave data 116 wave statistics 120 wave time series statistics 119 Data I O 17 Data upload 47 56 Date and time 37 Declaration of Conformity 3 Deployment 54 Depth to pressure conversion 140 Diagnostic 48 Dimensions 13 E Electronics disassembly reassembly 121 End cap 79 End cap connectors 13 Extensions 21 102 External power See Power external Extract Tide 58 installation 19 F File extensions 21 102 File formats 21 102 Format 21 102 cap 102 hex 104 110 126 120 pt 118 tid 116 was 117 wb 116 wt 120 wts 119 converted data 116 Quartz 104 real time data 102 strain gauge 110 surface wave time series 120 tide data 116 uploaded data 104 110 wave auto spectrum report 118 wave auto spectrum statistics 117 wave data 116 wave Statistics 120 wave time series statistics 119 Manual version 018 Index SBE 26plus G General setup 37 Glossary 90 I Initialize logging 43 Installation 19 54 L Limited liability statement 2 Logging 44 M Maintenance 79 Manual revision history 144 Measurement sequence 95 Measuring tides only 52 Measuring waves only 52 Memory 11 Memory endurance 24 Memory upload 47 56 Merge barometric pressure 61 P Parity 17 Parker Super O Lube 91 Parts replacement 142 Photos 8 Plan Deployment 22 Plot Data 72 Polled sampli
171. of tweezers work your way around the retaining ring pushing it into the recess Rotate the 26plus into the mounting fixture as shown Screw the mooring pin into the mounting fixture Screw mooring pin into mounting fixture Mooring pin 54 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Recovering SBE 26plus WARNING Rinse the 26p us with fresh water See Section 10 Routine Maintenance and If the 26plus stops working while Calibration for optional conductivity cell cleaning and storage underwater or shows other signs of flooding or damage carefully secure it away from people until you have determined that abnormal internal pressure does not exist or has been relieved Pressure housings may flood under pressure due to dirty or damaged o rings or other failed seals When a sealed pressure housing floods at great depths and is subsequently raised to the surface water may be trapped at the pressure at which it entered the housing presenting a danger if the housing is opened before relieving the internal pressure Instances of such flooding are rare However a housing that floods at 600 meters depth holds an internal pressure of more than 800 psia and has the potential to eject the end cap with lethal force A housing that floods at 50 meters holds an internal pressure of more then 85 psia this force could still cause injury If you suspect the 26plus i
172. on Tide 0 2 mm for 1 minute integration 0 01 mm for 15 minute integration Wave 0 4 mm for 0 25 second integration 0 1 mm for 1 second integration Standard Temperature internal thermistor Range 5 to 35 C Accuracy 0 01 C Resolution 0 001 C Calibration 1 to 32 C measurements outside this range may be at slightly reduced accuracy due to extrapolation errors Optional High Accuracy Temperature external thermistor Range 5 to 35 C Accurac 0 002 C Resolution 0 0001 C Calibration 1 to 32 C measurements outside this range may be at slightly reduced accuracy due to extrapolation errors Conductivity optional SBE 4M conductivity sensor Range 0 0 to 7 S m 0 0003 S m month typical 0 001 S m month guaranteed not Accuracy applicable in areas of high bio fouling or contamination or if Application Note 2D procedures are not followed Resolution 0 00002 S m Calibration 2 6 to 6 S m plus zero conductivity air Stated values in mm for accuracy stability hysteresis and resolution are for 45 psia 20 m pressure sensor Scale for other ranges multiplying by actual sensor range in psia 45 psia 11 Manual version 018 Section 2 Description of SBE 26p us SBE 26plus Other Specifications Counter Time Base for conductivity Quartz pressure temperature amp Quartz wave burst data Quartz TCXO 1 ppm per year aging 15 ppm 20 to 70
173. onductivity G CH F F conductivity H CI F F conductivity I CJ F F conductivity J CTCor F F conductivity TCor CPCor F F conductivity PCor CSlope F F conductivity slope correction 94 Manual version 018 Appendix Il Sample Timin SBE 26plus Appendix Il Sample Timing General Sample Timing Notes When Start is sent If Use start time in the SetSampling prompt is No the 26p us starts logging 10 seconds after receipt of Start If Use start time in the SetSampling prompt is Yes the 26p us starts logging at SetStartTime If Use start time in the SetSampling prompt is Yes and SetStartTime is less than 10 seconds in the future when Start is sent the 26p us ignores the programmed start time and starts logging in 10 seconds If Use stop time in the SetSampling prompt is Yes and SetStopTime is less than 1 hour after logging begins the 26plus ignores the programmed stop time and continues logging until Stop is sent Tides The 26p us integrates the pressure sensor output over the entire tide duration calculating and storing an average pressure for that time period The 26p us measures the temperature and optional conductivity T and C associated with the tide after the tide duration The time stamp the time reported with the tide pressure temperature and conductivity data is the time at the beginning of the tide duration Waves The time stamp the time reported with wave burst data is the
174. onservation and Recovery Act CONTAINER HANDLING Nonrefillable container Do not reuse this container for any purpose Offer for recycling if available Sea Bird Electronics label revised 01 28 10 126 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus Appendix VI Wave Theory and Statistics Surface Gravity Waves Description Types of Waves and Restoring Forces The most characteristic physical feature of any kind of wave is the restoring force If a medium at rest such as still water is disturbed in some way by the wind for example or by dropping a rock into a pond the restoring force acts to return the medium to its initial still state Compressibility is the restoring force for sound waves Surface tension acts as the restoring force at any surface of contact between any two different fluids like air and water and produces very high frequency capillary waves Gravity waves arise through the restoring force of gravity on water particles displaced from equilibrium levels If the equilibrium level is a free surface the boundary between water and air surface gravity waves are formed If the equilibrium level is an internal surface in a stratified fluid internal gravity waves are formed These internal waves tend to have longer periods minutes to hours than surface gravity waves seconds Finally planetary effects such as rotation introduce restoring effects such as the Coriolis force and potent
175. ored auto spectrum statistics e Time Series Statistics wave integration time sec wave burst duration user input number of samples burst sample duration and remaining lines are calculated not stored time series statistics 103 Manual version 018 Appendix Ill Data Formats SBE 26plus Hex Data Format with Quartz Pressure Sensor hex extension A hex file contains hexadecimal data uploaded from SBE 26p us memory using SeatermW s Upload The beginning of a sample hex file for a 26p us with Quartz pressure sensor and without conductivity follows Sea Bird SBE 26plus Data File FileName C 26plus QuartzNoCond hex Software Version 1 07 DS SBE 26plus V 6 1c SN 1022 10 Dec 2006 10 43 20 xuser info test file quartz pressure sensor serial number 12345 range 45 psia internal temperature sensor conductivity NO iop 5 9 ma vmain 18 5 V vlith 9 1 V xlast sample p 14 8637 t 18 8973 tide measurement interval 5 000 minutes duration 120 seconds xmeasure waves every 3 tide samples 512 wave samples burst at 4 00 scans sec duration 128 seconds logging start time do not use start time logging stop time do not use stop time tide samples day 288 000 xwave bursts day 96 000 memory endurance 218 6 days nominal alkaline battery endurance 319 5 days total recorded tide measurements 17 total recorded wave bursts 5 tide measurements since l
176. ormat cccccsseesseesceesceeseeseceseceseeneenaeenees 63 Merge Barometric Pressure Algorithm ccccscesscsesceeeceteeeecsseeneeneenseenaes 63 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports scsscssssssesssssssssseeesees 64 Process Wave Buitst Data errou a i aa A Ea E EEEa E R 64 Process Wave Burst Data Algorithm esssesessessesesssreeessesersessersesseeresses 67 Create Reports Summarize Wave Data cccccccsseesseeseeesceeeceeseeeeeeteesseenseenaes 68 Section 9 Data Plotting Plot Data cssssscssccesseeccssceseesessescerssesees 72 Pile Setups Lapis sices Sone eek e r ea a E a Madea ces oven eE 72 Plot Setup Ta biise se sed cance cdeseeses e pevetoedacdases suas E eons antes 73 X AXIS Fab wes csssin sek ceh euenien e e a i e aE EE aed 74 Y Axis ab ennie denni ii E a SE A a E E E iE 76 Viewing and Outputting Plots ccceccesecscecsseeeeeseeeeceeeeeeeceseenseeeeesseenseenaes 77 Section 10 Routine Maintenance and Calibration scssscsscssseeeseees 79 Corrosion Precautions nen onpen ne E A EN EA E TR EE ak 79 Connector Mating and Maintenance cccceccceesceesceeeceeeceeceaecesecneeeseenseentes 79 Battery Replacement scncese ia i R E R i 80 Pressure Sensor MaMtenanceisprniiiirni a ek EE EE ERER 81 Conductivity Cell Maintenance cccccccsseesseecceesceeeceeeceseeeseceaecaeeeeeseenaeenaes 84 Sensor Calibration isese aoea En EE EE EEEO EER 85
177. ormation by clicking Status The status response should indicate logging no 56 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus 6 Click Upload to upload stored data in a form that Seasoft for Waves data processing modules can use SeatermW responds as follows A SeatermW sends the status DS command displays the response and writes the command and response to the upload file with each line preceded by DS provides information regarding the number of samples in memory tide interval etc B SeatermW sends the calibration coefficients DC command displays the response and writes the command and response to the upload file with each line preceded by DC provides information regarding the sensor calibration coefficients C Inthe Save As dialog box enter the desired upload file name and click OK The upload file has a hex extension D ASCII Upload if binary upload was not selected in Step 2 SeatermW sends the data upload command DD SeatermW writes the data to the upload file The Status bar at the bottom of the SeatermW window displays the progress of the upload indicating the number of uploaded lines of data E Binary Upload if binary upload was selected in Step 2 SeatermW tests that the selected binary upload baud rate is supported by your computer If it is not the upload is aborted Note SeatermW sends ByteCount to determine how many bytes of
178. ow Actual Pressure psia Indicated Pressure psia 0 000 0 057 9 000 8 939 18 000 17 936 27 000 26 932 36 000 35 929 45 000 44 925 Linear regression best straight line fit pcorrected pindicated slope offset yields slope 1 00039381 and offset 0 057 Enter these correction coefficients originally set to 1 0 and 0 0 respectively in Convert Hex s Coefficient Configuration dialog box Temperature Sensor Calibration The primary source of temperature sensor calibration drift is the aging of the thermistor element Sensor drift is usually a few thousandths of a degree during the first year and less in subsequent intervals Sensor drift is not substantially dependent upon the environmental conditions of use and unlike platinum or copper elements the thermistor is insensitive to shock Note The temperature sensor coefficients are entered into the 26p us EEPROM with Temperature sensor calibration the calibration coefficient commands The coefficients can be viewed using coefficients in Convert Hex s DC in SeatermW Coefficient Configuration dialog box are ignored software will be updated in future to eliminate these entries from dialog box 86 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus Note See Application Note 31 for computation of slope correction coefficient from pre and post cruise calibrations supplied by Sea Bird or from salinity bottle sa
179. owever there is still some residual effect allowing the 26plus to equilibrate before starting will provide the most accurate calibration correction Calculating Offset using a Barometer 1 Place the 26plus in the orientation it will have when deployed In SeatermW connect to the 26plus 3 Quartz pressure sensor Send FR to display the pressure and pressure sensor temperature compensation frequencies Click Stop to end the test Compute pressure in psia from the frequencies with the formula shown on the calibration sheet 4 Strain Gauge pressure sensor Send TS a number of times to measure pressure as well as pressure temperature and optional conductivity and transmit converted data in engineering units pressure in psia 5 Compare the 26p us output to the reading from a good barometer Calculate Offset barometer reading 26plus reading 6 Enter the calculated offset positive or negative in Convert Hex s Coefficients Configuration dialog box Offset Correction Example Quartz Pressure Sensor Pressure measured by barometer is 1010 50 mbar Pressure calculated from 26plus pressure frequency is 14 06 psia Convert barometer reading to psia using relationship mbar 0 01 dbar mbar 1 psia 0 689476 dbar psia Barometer reading 1010 50 mbar 0 01 0 689476 14 66 psia Offset 14 66 14 06 0 60 psia Enter offset in Convert Hex s Coefficient Configuration dialog box 85 Manual version 018 Section
180. perature conductivity and time First 3 bytes temperature and time First 3 bytes 3Fc4F7 is 3F9D13 is pressure number next 2 bytes 6F47 is 7 pressure number next 2 bytes 7981 is temperature temperature number next 3 bytes 000000 is number and last 4 bytes 09185F8F is start time of tide conductivity number and last 4 bytes 091cB23F is start measurement seconds since January 1 2000 time of tide measurement seconds since January 1 2000 000000000000000000 Flag beginning of wave burst 000000000000000000000000 Flag beginning of wave 8 Setup for this example was to measure waves every burst Setup for this example was to measure waves every 3 tide samples so there are 3 tide records lines 5 to 7 before wave burst flag An uploaded file that includes multiple logging sessions contains these four records at the start of each logging session to provide the sampling parameters for that logging session 112 Manual version 018 Appendix Ill Data Formats SBE 26plus Note You must run ExtractTide exe before Convert Hex if your uploaded hex file contains data from multiple logging sessions See Section 6 Conversion into Convert Hex converts the hex data to pressure temperature optional conductivity and time in engineering units when the data is separated into tide and wave burst files The tide data conversions are described below pressure psia slope correction pressure number B
181. place as necessary Apply a light coat of O ring lubricant Parker Super O Lube to O ring and mating surfaces Reconnect the Molex connector to the PCB assembly Verify the connector holds and pins are properly aligned Carefully fit the PCB assembly into the housing aligning the holes in the end cap and housing Reinstall the 4 hex head screws to secure the end cap to the housing Reinstall the 3 plastic hex head screws in the end cap Establish communications with the 26plus see Section 5 SBE 26plus Setup Installation and Data Upload SeatermW for details Reset the date and time SetTime and initialize logging InitLogging before redeploying No other parameters should have been affected by electronics disassembly send DS to verify 122 Manual version 018 Appendix V AF24173 Anti Foulant Device SBE 26plus Appendix V AF24173 Anti Foulant Device AF 24173 Anti Foulant Devices supplied for user replacement are supplied in polyethylene bags displaying the following label AF24173 ANTI FOULANT DEVICE FOR USE ONLY IN SEA BIRD ELECTRONICS CONDUCTIVITY SENSORS TO CONTROL THE GROWTH OF AQUATIC ORGANISMS WITHIN ELECTRONIC CONDUCTIVITY SENSORS ACTIVE INGREDIENT Bis tributyltin oxide OTHER INGREDIENTS 20 00 eee ee eee eee eeeee DANGER See the complete label within the Conductivity Instrument Manual for Additional Precautionary Statements and Information on the Handling Storage and Disposal of this Product
182. plus Gauge pressure sensor or waves will calculate the tide pressure based on the collected data 88 Manual version 018 Section 11 Troubleshooting SBE 26plus Cause Solution 6 In rare cases the program that controls the 26plus microprocessor can be corrupted by a severe static shock or other problem This program can be initialized by using the reset switch Proceed as follows to initialize 1 Asa precaution upload all data before proceeding 2 Open the battery end cap and remove the batteries see Replacing Note Batteries in Section 10 Routine Maintenance and Calibration for details Using the reset switch does not affect 3 There is a toggle reset switch on the battery compartment bulkhead which tne 26plus memory data in memory is visible after the batteries are removed The switch is used to disconnect the internal back up lithium batteries from the electronics Set the switch to the reset position for at least 5 minutes 4 Reinstall or replace the batteries and close the battery end cap 5 Establish communications with the 26plus see Section 5 SBE 26plus Setup Installation and Data Upload SeatermW for details Send the status command DS to verify that the setup is unaffected and user programmable parameter values are unaffected Problem 2 Nonsense or Unreasonable Uploaded Data The symptom of this problem is an uploaded file that contains unreasonable values for example values that are outside the expec
183. psa file 108 Manual version 018 Appendix Ill Data Formats SBE 26plus Example 26plus with no conductivity from sample file above 000000000000000000 flag beginning of wave burst 091CB3220200000000 time of beginning of wave burst number of samples in burst 029B83E80000000000 pressure temperature compensation number number of samples in burst 87CED887CED6 wave burst pressure data eget Ss wave burst pressure data 87CEE087CEEA wave burst pressure data FFFFFFFFFFFFFFFFFF flag end of wave burst pressure temperature compensation amp number of samples 029B83E80000000000 hex Pressure temperature compensation number 029B83E8 hex 43746280 decimal Pressure number for first wave burst pressure data first 3 bytes 87CED8 hex 8900312 decimal Pressure temperature compensation frequency PTCF pressure temperature compensation number 256 43746280 256 170883 90 Hz Pressure frequency PF pressure number 256 8900312 256 34766 843 Hz Using calibration coefficients from uploaded hex file U0 5 856409e 00 Y 1 3 987838e 03 Y2 1 049603e 04 Y3 0 000000e 00 C1 2 305367e 02 C2 1 198422e 01 C3 2 401512e 02 D1 4 095400e 02 D2 0 000000e 00 T1 2 781994e 01 T2 6 760780e 01 T3 1 761829e 01 T4 6 000932e 00 POffset 0 U 1 0 PTCF 1 000 000 UO 1 0 170883 90 1 000 000 5 856409e 00 0 004482634 C C1 C2 U C3 U 2 305367e 02 1 19
184. ptions menu This says Save amp Exit If you do not want to save changes click Cancel to exit Make the desired selections 61 Manual version 018 Section 7 Tide Data Processing Merge Barometric Pressure SBE 26plus 2 Click on the Data Setup tab The Data Setup tab looks like this fs Merge Barometric Pressure i ol x File Options Help If selected output tid File Setup Data Setup file contains water depth Units in input barometric in place of pressure M Convert Pressure to Water Depth pressure bp file psia or millibars Input Barometric Pressure Units v Average Density nominal value 1028 kg m 3 ft 029 Gravity nominal value 9 8 m s 2 98 Average density and gravity value to use to calculate water depth Entries ignored if you do not select Convert Pressure to Water Depth Click Start Process to begin processing data Status field on File Setup tab shows Processing complete when done tart Process pooo e Cancel Return to Seasoft for Waves window e f Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit Note Make the desired selections and click Start Process to process the data Merge Barometric Pressure adds descr
185. r Amsterdam ISBN 0 444 41602 1 Neumann and Pierson 1966 Principles of Physical Oceanography Prentice Hall EngleWood Cliffs N J Pond and Picard 1983 Introductory Dynamical Oceanography 2nd Ed Pergamon Press New York ISBN 0 08 028728 X Press W H et al 1986 Numerical Recipes Cambridge University Press New York Reports Earle M D and J M Bishop 1984 A Practical Guide to Ocean Wave Measurement and Analysis Published by ENDECO Inc Marion MA Handbook on Wave Analysis and Forecasting 1976 World Meteorological Organization Geneva ISBN 92 63 10446 8 Knowles C E 1981 Estimation of surface gravity waves from subsurface pressure records for estuarine basins UNC Sea Grant College Publication UNC SG WP 81 6 Morang A 1990 Quality Control and Management of Oceanographic Wave Gauge Data Instruction Report CERC 90 1 Department of the Army Waterways Experiment Station Corps of Engineers Vicksburg Mississippi Scientific Publications Bergan A O A Torum and A Tratteberg 1968 Wave measurements by pressure type wave gauge Proc 11th Coastal Eng Conf ASCE 1 19 29 Bishop C T and M A Donelan 1987 Measuring waves with pressure transducers Coastal Eng 11 309 328 Forristall G Z 1982 Subsurface Wave Measuring Systems in Measuring Ocean Waves National Academy Press Washington D C pp 194 209 Grace R A 1970 How to measure waves Ocean Ind 5 2 65 69 Hom ma M K Ho
186. r temperature above the pressure sensor deg C e frequency where measured pressure pressure at surface lt minimum allowable verage salinity above the pressure sensor PSU attenuation wave sample duration e 1 minimum period l Number of spectral estimates for each frequency band If getting high frequency noise in output adjust minimum allowable attenuation and or minimum period Frequencies gt fmax are not processed unless Use filter cutoff is selected leakage that occurs when time series contains periodic Low frequency cutoff fmin 1 maximum signal that does not period Frequencies lt fmin are not processed correspond to one of unless Use filter cutoff is selected exact frequencies of Fast Fourier Transform Hanning window inimum allowable attenuation default 0 0025 suppresses spectral Hanning window cutoff default 0 1 Chi squared confidence percent default 90 Outputting wt and or wss files is optional other file types was rpt and wts are always output If not selected all Fourier coefficients for F Output surface wave time series to wt file frequencies gt fmax and lt fmin are set to 0 If selected filter ramps Fourier coefficients down to 0 for frequencies gt fmax and lt fmin I Output FFT coefficients to wss file Use filter cutoff default no Select number of wave bursts to process and Process Options number of wave bursts to skip at start of data
187. r to add descriptive information to file name e Plot type as for Auto Spectrum tts for Tide Time Series ws for Wave Statistics or wts for Wave Time Series e Wave burst number for types that have a plot for each wave burst For example if processing X tid X wb X was X wts and X wt with a Name Append Click Start Process to begin processing data Status field shows Processing complete when done of Color and outputting jpg files output file names are XColorAs 0 jpg XColorAs 1 jpg etc Auto Spectrum 1 file for each selected wave burst XColorTts jpg Tide Time Series XColorWs jpg Wave Statistics XColorWts 0 jpg XColorWts 1 jpg etc Wave Time Series 1 file for each selected wave burst Start Process Exit Cancel Return to Seasoft for Waves window e f Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e f Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit 72 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus Plot Setup Tab The Plot Setup tab defines the plot type data to be included and plot layout title color font grid lines etc The Plot Setup tab looks like this lolx User input Plot title User selected Title color Select Add file name to title to add input data
188. rded wave bursts 0 tide measurements since last start 0 wave bursts since last start 0 based on SetSampling based on SetSampling Sao c transmit real time tide data YES TxTide transmit real time wave burst data YES TxWave transmit real time wave statistics NO see Note 2 SetSampling status stopped by user see Note 3 logging NO send start command to begin logging Notes 1 Although calculated battery endurance for this example is 1026 8 days 2 81 years Sea Bird does not recommend planning deployments longer than 2 years with alkaline batteries 2 Iftransmit real time wave statistics YES following lines appear below it all statistics parameters are entered with SetSampling number of wave samples per burst to use for wave statistics 512 do not use measured temperature and conductivity for density calculation average water temperature above the pressure sensor deg C 15 0 average salinity above the pressure sensor PSU 35 0 height of pressure sensor from bottom meters 0 0 number of spectral estimates for each frequency band 5 minimum allowable attenuation 0 0025 minimum period seconds to use in auto spectrum 0 0e 00 maximum period seconds to use in auto spectrum 1 0e 06 hanning window cutoff 0 10 show progress messages 3 You must send Start to start logging at programmed start time After you send Start status line should show status waiting to start at 29 Jan 20
189. re C temperature number 1000 10 where e temperature number is the next 2 bytes 4 characters of the tide data converted from Hex to decimal conductivity frequency Hz conductivity number 256 where e Conductivity number is the next 3 bytes 6 characters of the tide data converted from Hex to decimal Conductivity frequency is converted to conductivity using the coefficients and equation found on the calibration certificate for the sensor These coefficients are entered in the 26plus EEPROM at the factory using the calibration coefficient commands and are read by Convert Hex from the uploaded hex file header in the DC response time time number number of seconds since January 1 2000 e Time is the last 4 bytes 8 characters of the tide data converted from Hex to decimal Example 1 no conductivity from sample file above tide record 3FB78A6CA4091CB051 hex The first 3 bytes are 3FB78A hex 4175754 decimal For this example M 279620 2 and B 18641 3 in DC response in hex file Assume slope correction 1 0 and offset correction 0 in the psa file pressure slope correction pressure number B M offset correction pressure 1 0 4175754 18641 3 279620 2 0 14 8670 psia The next 2 bytes are 6CA4 hex 27812 decimal temperature temperature number 1000 10 27812 1000 10 17 812 C The last 4 bytes are 091CB051 hex 152875089 decimal Time 1
190. ries wts H E E el Average Period seconds time series statistics Average Wave Height meters time series statistics Burst Number Date Time Energy J m 2 H1710 meters time series statistics H1 100 meters time series statistics Maximum Wave Height meters time series statistics Number of waves time series statistics Pressure Sensor Depth meters Significant period seconds Significant wave height meters Wave burst auto spectrum Expand al Shrink Expand Wave time series Variance coed Make the desired selections and click OK to return to the Create Reports data setup tab 4 Click Start Process to process the data 71 Manual version 018 Section 9 Data Plotting Plot Data SBE 26plus Section 9 Data Plotting Plot Data Plot Data displays and plots data from files with a tid wb was wts or wt file extension Plot Data e Plots up to five variables on one plot with one X axis and up to four Y axes e Zooms in on plot features Note e Sends plots to a printer saves plots to the clipboard for insertion in SeasoftWaves ini contains the location another program such as Microsoft Word or saves plots as graphic files and file name of the last saved psa file for each module SeasoftWaves ini is in bitmap metafile or JPEG format stored in USERPROFILE Local Settings Anes ea Eird In Seasoft for Waves Run menu sele
191. rikawa and S Komori 1966 Response characteristics of underwater wave gauge Proc 10th Coastal Eng Conf ASCE 1 99 114 Michel W H 1968 Sea Spectra Simplified Marine Technology January 1968 17 30 Wang H D Lee and A Garcia 1986 Time series surface wave recovery from pressure gage Coastal Engineering 10 379 393 141 Manual version 018 Appendix IX Replacement Parts SBE 26plus Appendix IX Replacement Parts Part 22018 Number Part Batteries alkaline D cell Duracell MN1300 LR20 Application Description Power 26plus Quantity in 26plus 12 801575 50092 60021 41124B Battery cover plate Battery cover plate spacer SBE 16 19 Jackscrew Kit Spare battery end cap hardware and o rings Retains alkaline D cell batteries Retains lithium DD cell batteries with buttons For removing connector end cap O rings and hardware including e 30145 Screw 6 32 x 1 2 Phillips head stainless steel secures battery cover plate to battery posts e 30242 Washer 6 flat stainless steel for screw 30145 e 30816 Parker 2 234E603 70 battery end cap to housing piston seal e 30090 Parker 2 153N674 70 battery end cap to housing face seal 50056 Spare parts kit Assorted hardware and o rings including e 30145 Screw 6 32 x 1 2 Phillips head stainless steel secures battery cover plate to battery posts e 30242 Washer 6 flat stain
192. rsion format Julian days x Select Vanables Output date and time as Julian days hh m m ss hours minutes seconds or dd mmm yyyy hh mm ss day month year hours minutes seconds Click to bring up a list of variables See Step 3 below Click Start Process to begin processing data Status field shows Processing complete when done Enit Cancel Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e f Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit Make the desired selections 70 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus 3 Click Select Variables The Select Variables dialog box looks like this Select ariables x Variable Name unit Average Period seconds time series statistics Burst Number Date Time Significant wave height meters auto spectrum Add Delete Insert Delete All ikl Click a variable and click Add to add it to list of output variables on left e f you select energy significant period significant wave height or variance Create Reports requires you to select whether to calculate variable from wave burst auto spectrum was or wave time se
193. s e Remaining parameters Set as desired With this sampling scheme the 26p us will do a wave burst consisting of 4 measurements after every 10 000 tide samples The wave measurement will have minimal effect on power and memory consumption allowing you to maximize the number of tide samples Using SBE 26plus as a Wave Recorder Note It is not possible to completely eliminate tide measurements in the 26plus If you are not interested in tide data the SBE 26plus can be set up to minimize the number of tide measurements Respond to the prompts in the SetSampling command as follows e tide interval integer minutes Set to the interval at which you want to take wave bursts e tide measurement duration Set to 10 sec which is the smallest allowable number e Measure wave burst after every N tide samples Set to 1 e Remaining parameters Set as desired With this sampling scheme the 26p us will do a tide measurement lasting for 10 seconds each time it does a wave burst The tide measurement will have minimal effect on power and memory consumption allowing you to maximize the number of wave bursts 52 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Setting Time in SBE 26pl us to Synchronize Sampling of Multiple Instruments If you are running software on your computer that provides the computer Note with an accurate real time stamp the DateTime me
194. s time of beginning of first tide sample tide sample interval wave integration period flag end of tide parameters tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time flag beginning of wave burst time of beginning of wave burst number of samples in burst pressure temperature compensation number number of samples in burst wave burst pressure data wave burst pressure data wave burst pressure data flag end of wave burst tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time tide data pressure temperature conductivity and time flag beginning of wave burst e Beginning lines flags header Header lines contain in order VVVV Input file name Software version used to upload the data 26plus response to status DS command 26plus response to calibration coefficients DC command e Following lines Data follows with each line followed by a carriage return and line feed Data is described below 105 Manual version 018 Appendix Ill Data Formats SBE 26plus Setup Parameters and Tide Data with Quartz Pressure Data lines after the S gt DD is described below Tide 26plus without Conductivity 26plus with Conductivity Line all flags and tide data are 9 bytes 18 Hex characters
195. s PY2 F F quartz pressure Y2 Dates shown PY3 F F quartz pressure Y3 are when PC1 F F quartz pressure C1 calibrations were PC2 F F quartz pressure C2 perform d PC3 F F quartz pressure C3 Coefficients are initially factory PD1 F F quartz pressure D1 set and should PD2 F F quartz pressure D2 agree with PT1 F F quartz pressure T1 Calibration PT2 F F quartz pressure T2 Certificates PT3 F F quartz pressure T3 shipped with 26plus PT4 F F quartz pressure T4 93 Manual version 018 Appendix Command Summary SBE 26plus CATEGORY COMMAND DESCRIPTION PAO F F strain gauge pressure AO PA1 F F strain gauge pressure A1 PA2 F F strain gauge pressure A2 PTCA0 F F strain gauge pressure PTCAO PTCA1 F F strain gauge pressure PTCA PTCA2 F F strain gauge pressure PTCA2 PTCBO0 F F strain gauge pressure PTCBO PTCB1 F F strain gauge pressure PTCB1 PTCB2 F F strain gauge pressure PTCB2 PTempA0 F F strain gauge pressure PTempA0 PTempA1 F F strain gauge pressure PTempA1 PTempA2 F F strain gauge pressure PTempA2 Calibration POffset F F pressure offset psia applicable to both Coefficients quartz and strain gauge pressure continued TCalDate S S temperature calibration date TAO F F temperature AO TA1 F F temperature Al TA2 F F temperature A2 TA3 F F temperature A3 CCalDate S S conductivity calibration date CG F F c
196. s No logging starts approximately 10 seconds after receipt of Start e If Use start time in SetSampling prompt is Yes logging starts at the delayed time set with SetStartTime The first time logging starts after receipt of initialize logging InitLogging data recording starts at the beginning of memory and any previously recorded data is written over To stop logging e Send Stop or e Before starting logging set a delayed stop time with SetStopTime and set Use stop time in SetSampling prompt to Yes Each time the 26p us is commanded to start logging again recording continues with new data stored after previously recorded data Start If Use start time in SetSampling prompt is No Start logging now in approximately 10 seconds OR If Use start time in SetSampling prompt is Yes Wait to start logging at time set with SetStartTime Stop Stop logging SetStartTime Set date and time to start logging 26plus prompts you to enter desired date and time Upon receipt of Start 26p us waits to starts logging at this date and time if Use start time in SetSampling prompt is Yes SetStopTime Set date and time to stop logging 26plus prompts you to enter desired date and time 26p us stops logging at this date and time if Use stop time in SetSampling prompt is Yes 44 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Logging Commands continued Example
197. s added to output file name before extension For example if processing Click Start Process to begin X was and X wts with a Name append of processing data Status field Not processing Wave output file is XWave r26 shows Processing complete when done Start Process xit Cancel Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e If Confirm Program Setup Change was not selected in Options menu This says Save amp Exit If you do not want to save changes click Cancel to exit Make the desired selections 69 Manual version 018 Section 8 Wave Data Processing Process Wave Burst Data and Create Reports SBE 26plus 2 Click on the Data Setup tab The Data Setup tab looks like this If selected output r26 file contains labels p Create Res 10 x above data columns labels match ca ieee ha If selected output r26 file contains a descriptive text header that includes input file variable names in Select Variables File Setup Data Setup l e name and path wave integration time number of points in burst height of 26plus above bottom and water density dialog box v Label Data Columns IV Output Header Informatio Separate each variable in output Col t 126 file with a space tab eget ates Space 7 semi colon or colon Julian days conve
198. s algorithm Average water temperature above the pressure sensor Deg C 15 0 new value Average salinity above the pressure sensor PSU 35 0 new value These 2 prompts appears only if you enter N for using measured T and C for density calculation 26p us uses average water temperature and salinity to calculate density for wave statistics algorithm Height of pressure sensor from bottom meters 0 0 new value Height of pressure sensor from bottom affects attenuation and calculation of fmax frequencies gt fmax are not processed Number of spectral estimates for each frequency band 5 new value You may have used Plan Deployment to determine desired value see Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance Minimum allowable attenuation 0 0025 new value Minimum period seconds to use in auto spectrum 0 0e 00 new value 26plus defines high frequency cutoff fmax as smaller of frequency where measured pressure pressure at surface lt minimum allowable attenuation wave sample duration 1 minimum period Frequencies gt fmax are not processed Maximum period seconds to use in auto spectrum 1 0e 06 new value Low frequency cutoff fmin 1 maximum period Frequencies lt fmin are not processed Hanning window cutoff 0 10 new value Hanning window suppresses spectral leakage that occurs when time series to be Fourier tran
199. s flooded point the 26plus in a safe direction away from people and loosen the 3 screws on the connector end cap about turn If there is internal pressure the end cap will follow the screws out and the screws will not become easier to turn In this event loosen 1 bulkhead connector very slowly at least 1 turn This opens an o ring seal under the connector Look for signs of internal pressure hissing or water leak If internal pressure is detected let it bleed off slowly past the connector o ring Then you can safely remove the end cap 55 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Uploading Data from Memory Note The 26p us communicates at 9600 baud factory set default The SBE 26plus can upload data in ASCII at baud rates up to 38 400 or in binary at baud rates up to 115 200 Binary upload at 115 200 is approximately six times faster than ASCII upload at 38 400 because each byte is one character in binary but two characters in ASCII Binary upload of the full memory 32 MB at 115 200 baud requires approximately 3 5 hours If binary upload is selected SeatermW uploads the data in binary and then converts the data to ASCII resulting in a hex data file that is identical to one uploaded in ASCII 1 In Seasoft for Waves Run menu select SeatermW SeatermW appears 2 Select Configure in the Communications menu The Configuration dialog box app
200. sformed contains periodic signal that does not correspond to one of exact frequencies of FFT Use DS to verify that 26p us is set up to sample as desired 41 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Wave and Tide Setup Command continued Example user input in bold Set up 26p us with quartz pressure sensor to take 2 minute tide measurement tide measurement duration 120 seconds every 60 minutes tide interval 60 measure waves after every 6 tide samples wave burst after every N tide measurements 6 and take 4096 wave samples per wave burst wave samples burst 4096 at 1 sample per 0 25 second wave sample duration 0 25 Set up 26p us to start and stop sampling on command rather than at pre set start and stop times Set up 26plus to output real time wave statistics on 512 wave samples per burst Then send DS to verify setup S gt SETSAMPLING tide interval integer minutes 1 new value 60 tide measurement duration seconds 60 new value 120 measure wave burst after every N tide samples N 3 new value 6 number of wave samples per burst multiple of 4 80 new value 4096 wave Sample duration 0 25 0 50 0 75 1 0 seconds 0 25 new value 0 25 use start time y n y new value n use stop time y n n new value n TXWAVESTATS real time wave statistics y n n new value y the remaining prompts apply to real time wave st
201. sia instrument depth 4 466 meters total water depth 5 666 meters auto spectrum 10 spectral estimates per band 51 bands calculated each band is 0 010 Hz wide frequency span 0 005 to 0 492 Hz MM DD HH MM SIG HT SIG PER ENERGY CM SQ CM SEC 22 2G 17 15 13 A 9 7 5 3 04 05 15 42 3 1 0 0 2 2 9 13 o 10 3 04 05 18 42 32 2 2 0 1 2 5 18 1 7 4 04 05 21 42 46 3 2 2 0 2 3 7 12 5 8 82 04 06 00 42 39 9 3 0 2 5 0 13 4 8 39 04 06 03 42 4 8 3 23 0 6 2 6 17 1 9 41 04 06 06 42 45 0 4 2 0 8 3 0 21 2 13 56 04 06 09 42 49 8 2 2 Q STI 2 3 23 2 7 29 42 04 06 12 42 57 6 5 0 28 5 6 28 7 43 71 04 06 15 42 6 6 5 0 59 3 9 27 8 60 50 04 06 18 42 67 6 6 2 Or 72 gt 3T g7 AL 2 52 O The energy centimeters squared is the sum of the variance over the indicated frequency band e The 9 second wave period is the sum of the variances where the frequency is between 1 10 Hz and 1 8 Hz e The 20 second wave period is the sum of the variances where the frequency is between 1 22 Hz and 1 18 Hz e The 22 second wave period is the sum of the variances of all the frequencies less than 1 22 Hz Significant period 1 band averaged frequency with the greatest variance 118 Manual version 018 Appendix Ill Data Formats SBE 26plus Surface Wave Time Series Statistics wts extension A wts file is created from the wb file in Process Wave Burst Data A sample surface wave time series statistics file is shown below
202. sions split into separate files by Extract Tide There are two ini files used in Seasoft for Waves e SeasoftWaves ini contains the location and file name of the last saved Program Setup psa file and options settings for each module with a psa file Convert Hex Merge Barometric Pressure Process Wave Bursts Create Reports and Plot Data ini e SeatermW ini contains the last instrument type SBE 26 26plus or 53 COM port and baud rate used in SeatermW for communicating with the instrument The ini files are saved to Y USERPROFILE Local Settings Apps Sea Bird Example C Documents and Settings dbresko Local Settings Apps Sea Bird Jpg JPEG graphics file created by Plot Data Program Setup file used by Convert Hex Merge Barometric Pressure Process Wave Bursts Create Reports and Plot Data to store setup information such as input and output file names and locations and processing instructions psa The user can save the psa files to the desired locations As a default the psa files are saved to USERPROFILE Application Data SeasoftWaves Example C Documents and Settings dbresko Application Data Sea Bird SeasoftWaves File containing one line of surface wave time series and or 126 wave burst auto spectrum statistics for each processed wave burst created by Create Reports pt Summary report created by Process Wave Burst Data Tide measurements in engineering units created from uploaded tid hex
203. sor is now 45 psia Digiquartz 009 010 12 06 12 07 Quartz Version 6 1c add ExternalTemperature to allow setup for external temperature option Also added indication of internal or external temperature to status DS reply Correct status command and Appendix II examples said StartTime should be SetStartTime Correct wb file description said first line had start of tide measurement corrected to start of wave measurement Add information on battery storage replace main batteries every year to prevent leaking Update information on connector maintenance was inconsistent with application note 57 Add information that can upgrade firmware through the serial port for future changes Continued on next page 144 Manual version 018 Appendix X Manual Revision History SBE 26plus Continued from previous page 011 05 09 e Changes associated with Seasoft for Waves revision 1 18 ini file for calibration coefficients changed to psa file small changes in dialog boxes for Convert Hex as a result Location of SeasoftWaves ini changed for better compatibility with Vista e Add notes to clarify that Sea Bird does not provide barometric pressure bp file must be created by customer e Changed front cover photo cover photo showed orientation in mounting fixture inconsistent with how we build 26plus 012 06 09 e Update Convert Hex dialog boxes for version 1 18a of Seasoft
204. spond to the prompts to establish a delayed start date and time Type SetSampling and press the Enter key and answer yes to the use start time prompt to enable logging at the delayed start date and time Type Start and press the Enter key The 26plus should display logging will start at 10 if not ready for deployment Type QS and press the Enter key to command the 26p us to go to sleep quiescent state 32 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Command Descriptions This section describes commands and provides sample outputs See Appendix I Command Summary for a summarized command list General Command Notes Note Interrupting a wave burst and or tide measurement by pressing the Esc key or clicking Stop will affect the quality of your data For high quality data Sea Bird recommends the following to allow querying the 26plus during logging without interrupting measurements e e Set sampling parameters with enough time between measurements and Schedule time queries when the 26plus is not measuring tides of concern only for 26p us with Strain Gauge pressure sensor or waves Input commands in upper or lower case letters and register commands by pressing the Enter key The 26p us sends CMD if an invalid command is entered If the 26p us does not return an S gt prompt after executing a command press the Enter key to get the S gt prompt If a
205. st Setup for this example was to measure waves every 3 tide samples so there are 3 tide records lines 5 to 7 before wave burst flag An uploaded file that includes multiple logging sessions contains these four records at the start of each logging session to provide sampling parameters for that logging session 106 Manual version 018 Appendix Ill Data Formats SBE 26plus Note You must run ExtractTide exe before Convert Hex if your uploaded hex file contains data from multiple logging sessions See Section 6 Conversion into Convert Hex converts the hex data to pressure temperature optional conductivity and time in engineering units when the data is separated into tide and wave burst files The tide data conversions are described below pressure psia slope correction pressure number B M offset correction where e pressure number is the first 3 bytes 6 characters of the tide data Tide and Wave Files Extract converted from Hex to decimal Tide and Convert Hex e slope and offset corrections are read from the Convert Hex calibration coefficients psa file Note that the pressure number already includes the effect of the offset entered in the 26p us EEPROM with the POffset command e Mand B are scaling parameters that depend on pressure sensor range They are calculated by the 26plus and are read by Convert Hex from the uploaded hex file header in the DC response temperatu
206. t affect storing data to memory The remaining prompts apply to real time wave statistics Following prompts appear only if you enter Y for TXWAVESTATS and only apply to real time wave statistics and to output from SLWT and SLWS commands Show progress messages y n y new value If yes 26p us outputs progress messages as it performs real time calculations Number of wave samples per burst to use for wave statistics 512 40 new value Entered value must meet following gt 512 If entered number does not meet this criterion 26plus sets it to 512 power of 2 512 1024 etc If entered number does not meet this criterion 26p us rounds down to nearest power of 2 lt total number of wave samples burst If entered number does not meet this criterion 26p us rounds down to nearest power of 2 that is less than total number of wave samples burst 26plus calculates real time statistics on samples at beginning of burst for example if set up for 4096 samples burst and real time statistics on 512 samples burst 26plus uses first 512 out of 4096 samples in real time calculations Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Wave and Tide Setup Command continued Use measured temperature and conductivity for density calculation y n n new value If Y 26p us uses measured T and C to calculate density which is used in wave statistic
207. t in bold S gt SLWS 5 0 0000e 37 3 4938e 01 5 0087e 34 1 2227e 17 46 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Notes e Use SeatermW s Upload menu to upload data in ASCII or binary to a hex file that will be processed by Seasoft for Waves see Uploading Data from Memory below Manually entering DD or DBbaud b e does not produce data with the required header information for processing by Seasoft for Waves These commands are included here for reference for users who are writing their own software e To save manually uploaded data to a file click Capture before entering the upload command Note When SeatermW s Upload menu is used for binary upload SeatermW automatically tests that the selected upload baud rate is compatible with your computer sends ByteCount and sends DBbaud b e as many times as needed to upload all the data in memory in blocks of 500 000 bytes Data Upload Commands Stop logging before uploading data ASCII Upload DD Upload all data from memory in ASCII at baud rate set for general communication with Baud Binary Upload Binary upload useful for large data sets is inherently faster than ASCII upload because each byte is transmitted as one character instead of two Additionally the SBE 26p us supports binary upload at rates up to 115 200 baud compared to ASCII upload at rates up to 38 400 S
208. t is logging for example to send DS to check on logging progress it does not interrupt logging 26plus with Strain Gauge Pressure Sensor The 26plus does not respond at all while making a tide measurement If you need to establish communications during a tide measurement press the Esc key or click Stop to interrupt the tide measurement this interrupts the current tide measurement but does not stop logging If you are communicating requesting data for example sending DS QS SL or SLO from the 26plus when it should be starting the next tide measurement it delays the start of the next tide measurement If feasible depending on the value of tide duration and tide interval the 26p us makes the following tide interval shorter to return the time series to the expected timing For example if the tide interval is 1 minute tide sample start times are 10 20 15 10 21 15 10 22 25 26plus delayed sample because user sent DS 10 23 15 26p us made interval shorter to return to expected timing 10 24 15 33 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus The 26plus responds only to DS DC QS and Stop while waiting to start logging use start time prompt in SetSampling command is Yes and Start was sent but sampling has not started yet To send any other commands 1 Send Stop 2 Send the desired commands to modify the setup 3 Send Start again Click Upload to upload data
209. tart time of tide conductivity number and last 4 bytes 09185Ba7 measurement seconds since January 1 2000 is start time of tide measurement seconds since January 1 2000 3FF59573D6000000091B5cpD3 Tide record pressure 3FB7DE6CEB091CB17D Tide record pressure temperature conductivity and time First 3 bytes temperature and time First 3 bytes 3FB7DE is 3FF595 is pressure number next 2 bytes 73D6 is 6 pressure number next 2 bytes 6CEB is temperature _ temperature number next 3 bytes 000000 is Inumber and last 4 bytes 091CB17D is start time of conductivity number and last 4 bytes 091B5cD3 tide measurement seconds since January 1 2000 is start time of tide measurement seconds since January 1 2000 3FF674740E000000091B5DFF Tide record pressure 3FB8F66D33091CB2a9 tide record pressure temperature conductivity and time First 3 bytes temperature and time First 3 bytes 3FB8F6 is 3FF674 is pressure number next 2 bytes 740E is 7 pressure number next 2 bytes 6D33 is temperature temperature number next 3 bytes 000000 is number and last 4 bytes 091cB2a9 is start time of tide conductivity number and last 4 bytes 091B5DFF Imeasurement seconds since January 1 2000 is start time of tide measurement seconds since January 1 2000 000000000000000000 Flag beginning of wave burst 000000000000000000000000 Flag beginning of wave g Setup for this example was to measure waves every 3 bur
210. ted scale plot to fit 8 x 11 inch page If not selected Size determined by Plot Data View Dimensions plot dimensions as shown on screen Values Entered Below Units Width and Height entered here e File gt Data format Metafile wmf Jpeg jpg or Bitmap bmp gt Size determined by Plot Data View Dimensions plot dimensions as shown on screen Values Entered Below Units Width and Height entered here e Clipboard gt Data format Metafile wmf Jpeg jpg or Bitmap bmp gt Size determined by Plot Data View Dimensions plot dimensions as shown on screen Values Entered Below Units Width and Height entered here View Sets up viewing options e First Burst Last Burst Next Burst Prior Burst Go to Burst applicable to wave time series and auto spectrum plots Switch the plot on screen to a different wave burst e Undo Zoom Return the plot to the original ranges specified on the Axis tabs Undo Zoom is grayed out unless you have zoomed in by clicking and dragging to select a rectangular area to enlarge details e Set Zoomed Ranges Substitute the current zoomed ranges of the plot for the Minimum and Maximum plot ranges on the Axis tabs This allows you to save the ranges of the zoomed view so you can go to exactly the same view the next time you run Plot Data Set Zoomed Ranges is grayed out unless you have zoomed in by clicking and dragging to select a recta
211. ted range of the data Cause Solution 1 An uploaded data file with unreasonable values for pressure temperature or optional conductivity may be caused by incorrect calibration coefficients in either of the following places e In instrument EEPROM pressure temperature and conductivity sensor coefficients View the coefficients by sending DC in SeatermW If necessary modify calibration coefficient s by sending the appropriate coefficient command s see Command Descriptions in Section 5 SBE 26plus Setup Installation and Data Upload SeatermW e In instrument psa file used by Convert Hex pressure sensor slope and offset this offset is in addition to the offset programmed in the instrument EEPROM View modify the coefficients by clicking the Coefficients button in Convert Hex s dialog box Verify that the calibration coefficients match the instrument Calibration Certificates Problem 3 Nonsense or Unreasonable Real Time Data Note If real time or queried pressure values The symptom of this problem is real time data that contains unreasonable are unreasonable note that a pressure values for example values that are outside the expected range of the data slope and offset can be entered in Convert Hex s Coefficient Cause Solution 1 Real time data with unreasonable values for pressure Configuration dialog box to make temperature or optional conductivity and salinity may be caused by incorrect small post dep
212. th Strain Gauge Pressure Sensor e Tide sample for intervals without a wave burst Quiescent 0 0005 watt tide interval tide duration 2 6 sec Turn on off for each tide sample 0 36 watt sec Tide sample including temperature 0 14 watt tide duration Conductivity sample 0 71 watt sec Note 1 watt second 1 joule e Tide sample Wave burst for intervals with a wave burst Wave burst duration number of wave samples wave sample duration sec Conductivity sample 0 71 watt sec Real time wave statistics 0 2 watts 0 06 sec sample real time statistics samples burst If tide duration wave duration 5 lt tide interval Quiescent 0 0005 watt tide interval tide duration wave duration 2 6 sec Turn on off for each tide sample 0 36 watt sec Tide including temperature and wave sample watt sec 0 14 watt tide duration sec wave duration sec If tide duration wave duration 5 gt tide interval Turn on off for each tide sample 0 36 watt sec Tide including temperature and wave sample 0 14 watt wave duration sec Example 26plus with strain gauge pressure sensor conductivity sensor and standard alkaline batteries Measure tides every 60 minutes 24 measurements day with measurement duration of 120 seconds Measure waves after every 6 tide samples 24 6 4 wave bursts day Take 4096 wave measurements per burst at 0 25 second integration time per measurement Ou
213. that will be processed by Seasoft for Waves Manually entering a data upload command does not produce data with the required header information for Seasoft for Waves If the 26p us is uploading data and you want to stop it press the Esc key or click Stop Press the Enter key to get the S gt prompt Entries made with the commands are permanently stored in the 26p us and remain in effect until you change them The only exception occurs if the electronics are removed from the housing and the two PCBs are separated or the lithium jumper JP7 is removed see Appendix IV Electronics Disassembly Reassembly Before beginning disassembly upload all data in memory Upon reassembly reset the date and time SetTime and initialize logging InitLogging 34 Commands Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Status Command DS Notes e With Quartz pressure sensor You can wake up the 26p us during a tide measurement and display status press Enter key to get s gt then click Status without interrupting logging e With Strain Gauge pressure sensor Waking up the 26plus during a tide measurement and displaying status interrupts logging See General Command Notes above Note e Memory endurance is based on total memory capacity taking into account the setup tide measurement interval wave burst interval etc but not considering the measurements alread
214. the 26p us I O connector to RS 485 Sensors for information on 4 pin for standard RS 232 6 pin for optional RS 422 RS 485 RS 485 adapters and converters If you must use a wrench or pliers be careful not to loosen the T O connector instead of the locking sleeve B Remove the dummy plug from the 26p us I O connector by pulling the plug firmly away from the connector C Standard Connector Install the Sea Bird I O cable connector aligning the raised bump on the side of the connector with the large pin pin 1 ground on the 26plus OR MCBH Connector Install the cable aligning the pins D Connect the I O cable connector to your computer s serial port 2 In Seasoft for Waves Run menu select SeatermW The main screen looks like this SeatermW Command Data Echo Area Status bar Computer Comm Status Ready port general Uploading communication Finished eet ra for baud rate data bits Upload etc uploading data Instrument stop bits and parity SBE26plus COM1 9600 6 1 N Note e Menus Contains tasks and frequently executed instrument Once the system is configured and commands connected Steps 3 and 4 below e Command Data Echo Area Echoes a command executed using a to update the Status bar click Menu as well as the 26p us response Additionally a command can Status SeatermW sends the status be manually typed in this area from the available commands for the command DS which displa
215. the fitting with a 9 16 inch wrench DO NOT OVERTIGHTEN C Remove the upper portion of the capillary fitting and tube using a 7 16 inch wrench Store it for possible use another time Using the small syringe add oil to the lower portion of the fitting forming a meniscus Fill the large syringe 30521 1 4 full with oil A Thread the tube from the pressure bag 30551 through the Swagelock fitting 30002 and install the pressure bag tube over the needle B Pull the plunger back on the syringe drawing a vacuum on the pressure bag until it is completely flat Maintain the vacuum on the bag C Hold the syringe vertically with the bag down and slowly release the plunger allowing the vacuum to be released The bag should slowly fill with oil There is enough oil in the bag when the bag looks like a small pillow It is very important that there are no air bubbles in the pressure bag you may have to perform this step several times to ensure that there are no bubbles 82 Manual version 018 Section 10 Routine Maintenance and Calibration SBE 26plus 10 After the bag is filled gently remove the tube from the needle keeping the bag at or below the level of the end of the tube to prevent Maintain gentle air from entering the bag Maintaining gentle pressure on the bag to pressure on bi keep the oil at the end of the tube and prevent air from entering the bag insert the end of the tube into the lower portion of the fittin
216. tings Apps Sea Bird File Setup Data Setup File to store all information input in File Program setup file Setup and Data Setup tabs Open to select a different psa file Save or data SBE26 D47A4 10074 Merge26W psa Save As to save current settings or Open A Cave aan aama Restore to reset all settings to match last saved version Input directory I data SBE26 DATA 1 0074 Directory and file names for tide tid Select one TID and one BP input file data and barometric pressure bp data Note that both tid and bp files _Select _ must be in same directory but they can have different names Select to pick different files Output directory I data SBE 26 DATAM 0074 Select Name append fMinusBarF Directory and file name for output Output file x tid tid data Name append is added to output file name before tid extension For example if Click Start Process to begin z processing X tid and March03 bp processing data Status field ot processing with a Name append of MinusBarP shows Processing complete output file is XMinusBarP tid when done Start Process e Cancel Return to Seasoft for Waves window e If Confirm Program Setup Change was selected in Options menu If you made changes and did not Save or Save As program asks if you want to save changes e If Confirm Program Setup Change was not selected in O
217. tion or previously recorded data via a three wire RS 232 link optional RS 422 RS 485 full duplex The 26plus is factory configured for 9600 baud 8 data bits 1 stop bit and no parity The communications baud rate can be changed using Baud see Section 5 SBE 26plus Setup Installation and Data Upload SeatermW _ Standard ASCII data upload from memory is Note See Application Note 56 Interfacing to RS 485 Sensors for information on ae RS 485 adapters and converters done at the communications baud rate Binary data upload from memory can be accomplished at rates of up to 115 200 baud regardless of the setting for the communications baud rate 17 Manual version 018 Section 2 Description of SBE 26p us SBE 26plus Real Time Setup Baud Rate and Cable Length Standard RS 232 Interface The length of cable that the SBE 26p us can drive is dependent on the baud rate The allowable combinations are Maximum Cable Length meters Maximum Baud Rate 1600 600 800 1200 400 2400 200 4800 100 9600 50 19200 25 38400 16 7 57600 13 3 115200 57600 and 115200 baud are available only for binary upload and are not Notes applicable to real time data output e Set Baud rate with Baud TxTide Y for real time tide data TxWave Y for real time wave data Baud Rate and Cable Length TXWAVESTATS Y in SetSampling Optional RS 422 RS 485 full duplex Interface prompt for
218. tivity from sample file above tide record 3FC29478FB091B5D37 hex The first 3 bytes are 3FC294 hex 4178580 decimal For this example M 279620 2 and B 18641 3 in DC response in hex file Assume slope correction 1 0 and offset correction 0 in psa file pressure slope correction pressure number B M offset correction pressure 1 0 4178580 18641 3 279620 2 0 14 8771 psia The next 2 bytes are 78FB hex 30971 decimal temperature temperature number 1000 10 30971 1000 10 20 971 C The last 4 bytes are 091B5D37 hex 152788279 decimal Time 152788279 seconds since January 1 2000 November 3 2004 09 11 19 Example 2 conductivity enabled from sample file above tide record 3F9A816E50000000091CAFE7 hex The first 3 bytes are 3F9A81 hex 4168321 decimal For this example M 279620 2 and B 18641 3 in DC response in hex file Assume slope correction 1 0 and offset correction 0 in psa file pressure slope correction pressure number B M offset correction pressure 1 0 4168321 18641 3 279620 2 0 14 8404 psia The next 2 bytes are 6E50 hex 28240 decimal temperature temperature number 1000 10 28240 1000 10 18 24 C The next 3 bytes are 000000 hex 0 decimal conductivity frequency Hz conductivity number 256 conductivity frequency Hz 0 256 0 Hz The last 4 bytes are 091CAFE7 hex 152874983
219. tput real time wave statistics on 512 of the 4096 wave measurements burst Tide sample for intervals without a wave burst Quiescent between samples 0 0005 watt 3600 sec 120 sec 2 6 sec 1 74 joules measurement Turn on 0 36 joules measurement Take tide sample 0 14 watt 120 seconds 16 80 joules measurement Take conductivity sample 0 71 joules measurement Tide power measurement 1 74 0 36 16 80 0 71 19 61 joules measurement of tide measurements day without a wave burst 24 measurements day 4 wave bursts day 20 measurements day Total tide power day 19 61 joules measurement 20 measurements day 392 2 joules day Tide sample Wave sample for intervals with a wave burst Wave burst duration 0 25 seconds 4096 measurements 1024 seconds burst Tide duration wave duration 5 120 1024 5 1149 seconds lt tide interval 3600 seconds Quiescent between samples 0 0005 watt 3600 sec 120 sec 1024 sec 2 6 sec 1 23 joules measurement Turn on 0 36 joules measurement Take tide and wave sample 0 14 watt 120 sec 1024 sec 160 2 joules measurement Take conductivity sample 0 71 joules measurement Tide and wave power measurement 1 23 0 36 160 2 0 71 162 5 joules measurement Total tide and wave power day 162 5 joules measurement 4 measurements day 650 joules day Real time wave statistics Power consumption watt sec 0 2
220. ts The hex file also contains the DC command and response Convert Hex uses the calibration coefficients in the DC response to convert the raw data to engineering units Pressure slope and an additional pressure offset are entered in Convert Hex s Coefficient Configuration dialog box to make small post deployment corrections for pressure sensor drift Note that the pressure offset entered in Convert Hex is in addition to the offset shown in the DC response See Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex also see Sensor Calibration in Section 10 Routine Maintenance and Calibration DC Display calibration coefficients Examples are shown for 26plus with quartz pressure sensor and strain gauge pressure sensor Example 26plus with Paroscientific Digiquartz sensor user input in bold S gt DC Pressure coefficients 15 apr 2004 UO 5 818158e 00 Y1 3 912547e 03 Y2 1 192010e 04 Y3 0 000000e 00 Cl 6 273148e 03 C2 1 688132e 02 C3 1 655105e 04 D1 7 040300e 02 D2 0 000000e 00 T1 2 992117e 01 T2 6 588880e 01 T3 4 158092e 01 T4 1 073818e 02 M 12582 9 calculated by 26p us based on factory input pressure sensor range B 838 8 calculated by 26p us based on factory input pressure sensor range Offset 0 000000e 00 psia Temperature coefficients 05 nov 2004 TAO 1 653843e 05 TA1 2 800270e 04 TA2 2 759926e 06 TA3 1 646
221. tware changes and instructions for downloading the software from the FTP site This section describes the installation and use of Seasoft for Waves The SBE 26plus is supplied with a modular Windows software package Seasoft for Waves The software provides pre deployment planning communication with the 26plus for setup and uploading of data from the 26plus separation of the uploaded data into separate wave and tide files removal of barometric pressure from tide data statistical analysis and data plotting The 26plus is supplied with one additional program Extract Tide Extract Tide splits uploaded data from multiple logging sessions into separate files before converting and processing the data see Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex for details ExtractTide exe is a separate program but is installed in the same directory as Seasoft for Waves Software Installation Sea Bird recommends the following minimum system requirements for installing the software Windows 2000 or later 500 MHz processor 256 MB RAM and 90 MB free disk space for installation Although Seasoft for Waves was designed to work with a PC running Win 2000 XP extensive testing has not shown any compatibility problems when using the software with a PC running Vista or Windows 7 32 bit Seasoft for Waves If not already installed install Seasoft for Waves on your computer using the supplied software CD ROM
222. u had input and enabled a pre programmed stop time before beginning logging be processing data with Seasoft for Waves Capture 26plus responses on screen to file to save real time data or may be useful for Capture diagnostics File has cap extension Click Capture again to turn off capture Capture status displays in Status bar Interrupt and end current activity such as uploading data or running diagnostic test such Stop as FR VR TT TTR Note This does not stop logging use Stop command to stop logging press Esc key several times DS status DC calibration coefficients DD0 10 upload and Perform diagnostic tests on 26plus Tests are display tide samples Diagnostic non destructive they do not write over any 0 10 along with existing settings wave burst data logged during that period of time FR display frequencies See Command Descriptions in this section Note 3 Inthe Communications menu select Configure The dialog box looks like SeatermW s general this communication baud rate must be the same as the 26plus baud rate set with Baud Baud is factory set z No effect on general communication When ready guration to upload see Uploading Data from Memory SeatermW Confi Select 26plus SBE 26 Binary upload SBE 26plus SBE 53BPR Baud rate for general Computer communication Comm port for omm Port Baud Rate Upload Baud R
223. uctivity sensors be calibrated before and after deployment but particularly when the cell has been exposed to contamination by oil slicks or biological material 87 Manual version 018 Section 11 Troubleshootin SBE 26plus Section 11 Troubleshooting This section reviews common problems in operating the SBE 26plus and provides the most common causes and solutions Problem 1 Unable to Communicate with SBE 26plus The S gt prompt indicates that communications between the SBE 26plus and computer have been established Before proceeding with troubleshooting attempt to establish communications again by clicking Connect in SeatermW or hitting the Enter key several times Cause Solution 1 The I O cable connection may be loose Check the cabling between the 26p us and computer for a loose connection Cause Solution 2 The instrument Comm port and or baud rate may not have been entered correctly in SeatermW Select Configure in the Communications menu and verify the settings Cause Solution 3 The I O cable may not be the correct one The I O cable supplied with the 26p us permits connection to the DB 9P input connector on a standard RS 232 interface e 26plus Pin 1 large pin on standard connector goes to DB 9 pin 5 ground e 26plus pin 2 counter clockwise from pin 1 goes to DB 9 pin 3 e 26plus pin 3 opposite pin 1 goes to DB 9 pin 2 Cause Solution 4 If attempting to communicate with the 26plus after you started logg
224. ure ccccesceeseeteeteeetees 114 Tide Data Format tid extension cccceesseesceesceeseeeeceeeceseeeaeceeecseeeseeeseeees 116 Wave Burst Data Format wWb extension cccceeseeecceseceteeeteceeeeeeeseeeseeees 116 Wave Burst Auto Spectrum Statistics was extensiON ccceeeseesteeseeees 117 Wave Burst Auto Spectrum Report rpt extension ceceseeseesteeneeereeees 118 Surface Wave Time Series Statistics wts extension eeceseeeseeseeeteeees 119 Surface Wave Time Series Wt extension c ceeseeseeseceeeceeeeseesseeeenseenees 120 Wave Burst Statistics Report r26 extension ccceeceeseeeeeseeeeeeseeneeeseeees 120 Appendix IV Electronics Disassembly Reassembly sscsssssssssseees 121 Appendix V AF24173 Anti Foulant Device csscsssscssessssecsseeeseerees 123 Manual version 018 Table of Contents SBE 26plus Appendix VI Wave Theory and Statistics sscscsscsssesssscssssssessseees 127 Surface Gravity Waves Description ccccecsseesseesceeseeeseeeecneeeeenseenseenaes 127 Types of Waves and Restoring FOrces ccccesceeseeeeereeeeeeeeeeeeeeeeneeens 127 Spectrum of Surface Waves in the Ocean cceeccescceseceteeeteeseeeneeeneeees 127 Definition of TEMS anene iee E saci thoes eee 128 Basic Linear Wave Description cescceseeeeeseeeeeeseeeeeeeeeeeeneeneeaees 128 Phase Angle orena j E E E A R A R cs 129 Dispersion
225. ure waves after every 6 tide samples 24 6 4 wave bursts day Take 4096 wave measurements per burst Note This is same sampling scheme as shown in Battery and Memory Endurance dialog box above and in power endurance calculation examples N 24 W 4 M 4096 Bytes day 12N W 48 3M 12 24 4 48 3 4096 49 632 bytes day Memory capacity 32 MB 1024 1024 33 554 432 bytes Memory endurance 33 554 432 49 632 676 days As a check compare with the output of Battery and Memory Endurance the program shows the same results Note that for this example the 26p us power capacity exceeds the memory capacity 27 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Section 5 SBE 26p us Setup Installation and Data Upload SeatermW Note This section covers Instrument commands and e Programming the SBE 26plus for deployment using SeatermW responses are identical for the e Command descriptions 26plus with Quartz pressure sensor e Programming the SBE 26plus for use only as a tide recorder or only as a or Strain Gauge pressure except wave recorder ae noted e Installing and deploying the SBE 26plus e Recovery and uploading data from memory using SeatermW Programming for Deployment SeatermW Note 1 Connect the 26plus to the computer using the data I O cable See Application Note 56 Interfacing A By hand unscrew the locking sleeve from
226. val 10 sec the 26plus increases the tide interval so that wave burst duration real time wave statistics calculation tide interval 10 sec Note that real time wave statistics can be calculated on a subset of the total number of wave samples burst the real time statistics calculation requires 0 06 sec wave sample to be processed The drawing only shows the relationship between the maximum allowable wave burst duration real time statistics calculation and tide interval see other drawings below for sequencing of wave and tide measurements Tide interval Wave duration Real gt 10sec wave samples burst time wave sample duration wave statistics calculation if selected 99 Manual version 018 Appendix Il Sample Timing SBE 26plus e If tide duration lt tide interval 10 sec and wave burst duration real time wave statistics calculation lt tide interval tide duration 10 sec Wave burst sampling is done after the applicable tide measurement For example if the 26p us is set up to sample a wave burst every 2 tide measurements the first wave burst starts 2 seconds after the second tide measurement See Strain Gauge Example 1 Tide interval Tide interval Tide duration 2 sec Sleep gt 8 sec Sleep gt 8 sec T amp C measurement measurement Real time duration rym wave samples burst 3 calculation wave sample duration if selected Strain Gauge Example 1 Tide interval
227. veraging the value of the auto spectral estimate lies somewhere in the band averaged frequency band the error bars for the frequency are as wide as the band Band averaging is a trade off between vertical and horizontal error bars If you average a lot of bands you get a good estimate of the magnitude of a peak in Gpp but there is a lot of uncertainty as to its precise frequency value If you band average only a few bands the frequency of a peak is precisely defined but there is a lot of uncertainty as to the value of G p Sometimes a peak in the spectrum stands out from the background if there are few frequencies in the band but vanishes into the background as the number of frequencies averaged increases When this happens an understanding of the physical problem being investigated can help in deciding whether the peak is real or not Surface Wave Auto Spectral Density Function The one sided surface wave auto spectral density function for a frequency band centered at f is Gaa fo H fo Gop fo m sec 25 The transfer function H f is used to convert the subsurface pressure to surface waves and is computed with equations 2 and 4 H fe 1 WxK f z m Pa 26 136 Manual version 018 Appendix VI Wave Theory and Statistics SBE 26plus A plot of the surface wave auto spectral density function G with error bars is probably the most useful way of describing the sea surface shape due to a surface wave field A gl
228. wn number of samples in wave burst 0200 Hex 512 decimal Remaining bytes are 0 s 0200 Hex 512 decimal Remaining bytes are 0 s 18FD5B18FD64 First 3 bytes 18FD5B is pressure 18F03D18F054 First 3 bytes 18F03D is pressure number for first wave measurement last 3 bytes number for first wave measurement last 3 bytes 4and 18FD64 is pressure number for second wave 18F054 is pressure number for second wave followinglmeasurement Each subsequent line also contains data measurement Each subsequent line also contains data for 2 wave measurements There are a total of for 2 wave measurements There are a total of wave samples burst 2 lines of wave pressure data wave samples burst 2 lines of wave pressure data Last FFFFFFFFFFFFFFFFFF Flag end of wave burst FFFFFFFFFFFFFFFFFFFFFFFF Flag end of wave burst Note You must run ExtractTide exe Convert Hex converts the hex data to pressure in engineering units when the data is separated into before Convert Hex if your uploaded hex file contains data from multiple logging sessions See Section 6 Conversion into Tide and Wave Files Extract Tide and Convert Hex tide and wave burst files The wave burst data conversions are described below Pressure temperature compensation PTC pressure temperature compensation number 1000 Pressure P pressure number 8 Pressure temperature T PTempA0 PTempA1 PTC PTempA2 PTC
229. y in memory Battery endurance is based on original nominal alkaline battery capacity taking into account the setup tide measurement interval wave burst interval etc Itis not based ona measurement of remaining battery voltage or the number of measurements already taken If calculated battery endurance is greater than 730 days status response shows deployments longer than 2 years are not recommended with alkaline batteries Memory and battery endurance output with DS matches that calculated in Battery and Memory Endurance but Battery and Memory Endurance outputs lithium battery endurance as well as alkaline See Section 4 Pre Deployment Planning Plan Deployment and Battery and Memory Endurance Note After sending Start logging status should be one of the following if the 26plus is operating correctly e logging started if use start time in SetSampling prompt is No 26plus started logging 10 seconds after receipt of Start waiting to start at if use start time in SetSampling prompt is Yes 26plus waits to start logging at time set with SetStartTime 35 Display operating status and setup parameters Equivalent to Status menu List below includes where applicable command used to modify parameter Firmware version serial number date and time SetTime or DateTime User input description UserInfo Pressure sensor type quartz or strain gauge serial number and full scale ran
230. y where subsurface surface pressure 0 0025 t 20 or 1 user input minimum period 21 fmin 1 user input maximum period 22 Maximum frequency limits prevent noise in the subsurface time series from being mapped by the dispersion transfer function into unrealistic wave heights If the user selected Use filter cutoff a filter is applied that ramps the Fourier coefficients down to 0 for frequencies greater than fmax and less than fmin e For frequencies less than fmin fourier coefficient f exp f fmin fc e For frequencies greater than fmax fourier coefficient f exp fmax f fc where f frequency fc user input filter value A copy of the Fourier transform is saved it will be used to recover the surface wave time series Band Averaging Each raw spectral estimate contains two degrees of freedom Band averaging can be used to increase the number of degrees of freedom and reduce the error of the estimate The number of degrees of freedom n associated with grouping n spectral estimates in a frequency band of width f is twice the number of frequencies in the band 6f n T Band averaging is performed by adding up the total variance in a frequency band and dividing the sum by the width Hz of the frequency band f For positive frequencies less than the Nyquist the estimate of the one sided subsurface pressure auto spectral density function for a frequency band centered at f is n
231. ys in 26plus The 26plus must be awake for it to respond to a command pier aoa ee ti Area and use Connect to wake up the 26plus f e Status bar Provides status information 28 Manual version 018 Section 5 SBE 26plus Setup Installation and Data Upload SeatermW SBE 26plus Following is a description of the menus Note Menu Description Equivalent You must be connected to the Command instrument Connect in File Exit SeatermW Communications menu when using Connect Disconnect Re establish Status Coefficients Upload Stop communications with 26p us Computer or Diagnostic responds with S gt prompt 26plus goes to sleep Communicatio after 2 minutes without communication from press Enter key ns computer have elapsed Configure Establish communication parameters instrument Comm port and baud rate Seats Display 26plus setup and status logging DS samples in memory etc Display pressure temperature and optional Coefficients conductivity sensor DC calibration coefficients Set 26p us date and time based on time in computer See Setting Time in SBE 26plus to Date lime Synchronize Sampling of Multiple Instruments Dateless for details Upload data stored in memory in format our Upload with DD or data processing modules can use Uploaded DBbaud b data has hex extension Ue use Upload if you will Upload Before using verify 26p us has stopped logging send Stop unless yo

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