Paroscientific, Inc.
Contents
1. WIXDR P Pres Value gt B lt SN gt C lt Temp value gt C lt SN gt H lt Hum value gt P lt SN gt lt CR gt lt LF gt To change the header string to SPASHS use the following NH NMEA Header command Command 0100EW 0100NH PASHS Response 0001NH PASHS The P9 response will now look like this PASHS XDR P Pres Value gt B lt SN gt C lt Temp value gt C lt SN gt H lt Hum value gt P lt SN gt lt CR gt lt LF gt Remember to add a comma to the end of the string if a comma is to appear before XDR The maximum string length is 7 characters Unused characters to be null not spaces ASCII characters 32 through 90 are valid except and Command TT or A1 Description Read an external temperature sensor measurement in degrees Celsius Command 0100TT 0100A1 Response 0001 4 0001 example of response for negative temperature values Note See MD command for fan status indication see section 5 3 Command RH or A2 Description Read an external humidity sensor measurement in percent Command 0100RH 0100A2 Response 0001 Command N1 Description Read raw analog to digital converter value for the temperature input Command 0100N1 Response 0001 MET3A Installation Operation amp Maintenance Guide Page 11 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Command N2 Description Read raw analog to digital converter value for the2. Note that the adjusted output is expressed as H M2 T Z2 changing M2 will affect the instrument s adjusted zero offset if M2 is not 1 Command E1 E2 F1 F2 G1 G2 H1 H2 K1 K2 Description Read or set temperature and humidity calibration coefficients Channel 1 E1 F1 G1 H1 K1 temperature Channel 2 E2 F2 G2 H2 K2 humidity Example Command 0100E1 Response 0001E1 Note Changing these parameters effect the temperature and or humidity calibration MET3A Installation Operation amp Maintenance Guide Page 13 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 5 2 Aspiration Fan Status Indicator A warning character can be added to the temperature data to indicate the operational status of the aspiration fan This indication may be toggled on and off by using the Mode MD command When the Mode is set to MD 4 a plus sign will be appended to temperature measurement data if the fan is not operating properly Example Read or set the Mode MD parameter Read the Mode setting Command 0100MD Response 0001MD 2 04 The mode is set to report fan status Set the Mode setting Command 0100EW 0100MD 4 Response 0001MD 2 04 The mode is set to report fan status Example Read a temperature reading with the fan status indication MD 4 fan OK Command 0100TT Response 000122 23 Example Read a temperature measurement with the fan status indication MD 4 fan not working
3. The MET3A must be installed with the barometric port assembly vertical as shown below This position will assure optimum performance of the sensors Barometer Pressure Ls Condensation Drain Port I And RS 232 Connector Barometer and Electronics Enclosure Barometer Reference Height Base of Unit Aspirated Air Outlet zn Aspirated Air Inlet o 3 Install the unit in a location where the ports remain unobstructed There should be at least one foot of clearance in all directions and at least four feet of clearance from the ground The ports are designed to minimize effects caused by solar radiation and wind and obstruction of the ports could result in erratic performance For GPS Solar Shield Housing Temperature Humidity Sensor and Aspiration Fan METAA Installation Operation amp Maintenance Guide Page 7 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Meteorology applications we recommend that the METS3A be installed with the barometer port at the GPS antenna height 4 2 MET3A Connector Pinouts Double check that the power to the MET3A unit is correct in voltage requirements 7Vdc to 16Vdc 105mA nominal 200mA maximum and that the communication pin outs to the MET3A connector are correct z PIN 1 NO CONNECT PIN 2 BLACK DATA TO COMPUTER PIN 6 WHITE oo m SIN E BLACK PIN 3 BROWN DATA FROM COMPUTER PIN 4 NO CONNECT GND PIN 4 WHITE PIN 5 WHIT
4. Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 7 2 Ashtech uZ CGRS Receivers Interfacing the MET3A to the uZ CGRS Receiver The uZ CGRS is designed to integrate seamlessly with a Paroscientific MET3A Meteorological Station The MET station is attached to one of the receiver s four serial ports Commands are then issued to the MET Station to send its data to the receiver MET data can then be output from the receiver as an NMEA message and or stored in the D File within the receiver When using Ashtech Geodetic Base Station Software GBSS and the GBSS Meteorological Module a RINEX ME file is made automatically The following section describes how to connect the MET station to the uZ CGRS and how to verify that it is operating with the receiver The procedure instructs you to turn off all other types of data output so that you can easily verify that the receiver is outputting MET data Please note that once this procedure is completed you may need to issue other commands to configure the system for your specific application Basic MET station connection and operation verification procedure 1 Connect the dual RS 232 I O and MET Sensor cable P N 730417 to port 1 A C of the powered and running uZ CGRS unit 2 Connect the DB9 connector of cable 730417 labeled Port A B to Com 1 or 2 of your PC 3 Connect the other DB9 connector labeled Port C D to the MET cable P N 2319 4 Connect the MET cable to the MET station
5. the self heating of the sensor in still air is less than 0 07 degree C The temperature probe is surrounded by a fan aspirated solar shield which greatly reduces the effects of direct and reflected solar radiation 8 4 Temperature Calibration Overview The METS3A incorporates a precision thin film RTD to sense temperature A thermal chamber is used to control environmental temperature and an independently calibrated NIST traceable thermistor is used as a temperature reference The MET3A humidity temperature sensor is enclosed in a small isothermal block that includes a bore designed to accept a standard 0 125 diameter temperature reference probe The bore terminates in close proximity to the humidity temperature sensor assuring good isothermal contact between it and the temperature reference probe The MET3A RTD sensor and electronics are simultaneously calibrated by taking reference probe temperature and MET3A temperature measurements at various stable points over the range of 50 to 60 C and adjusting the MET3A temperature coefficients to correct for combined temperature sensor and electronics nonlinearity This process yields system temperature measurement accuracies of 0 1 C or better over the temperature range of 50 to 60 C METAA Installation Operation amp Maintenance Guide Page 24 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 8 5 Relative Humidity Sensor The humidity sensor uses a polymer capacitance
6. 5 Using communication software such as the terminal in Micro Manager or Procomm issue the command PASHQ RAW to the receiver via port A Look at the data returned and ensure EVERYTHING is listed as OFF If everything is not off issue command PASHS OUT PORT to turn everything off 6 Issue command PASHQ PAR and ensure everything for the data returned is also listed as OFF If not issue command PASHS NME ALL PORT OFF to turn everything OFF 7 Issue command PASHS OUT C MET ON to connect the MET station via port C 8 Issue Command PASHS NME XDR A ON to enable XDR with MET information 9 Atthis point the PC will display the MET station outputs about once a second The Data received will look similar to the below string GPXDR P 1 018719 B DQ 75136 C 23 33 C DQRHT212 H 34 7 P DQRHT212 7C Which has the meaning GPXDR P lt Pres Value gt B lt SN gt C lt Temp Value gt C lt SN gt H lt Hum Value gt P lt SN gt checksum If the PC shows the GPXDR string then the MET station is on line and operating The uZ CGRS will create a D file with the MET data A time tag precedes each line of data similar to the following example METAA Installation Operation amp Maintenance Guide Page 19 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 C 521092 997000 1108 XDR P 1 008417 B DQ 75136 C 22 88 C DQRHT212 H 37 7 P DQRHT212 The time tag has the format C GPS Seconds of week
7. METS3A Paroscientific Power Supply Kit part number 1291 001 or 1291 002 will simplify this process 3 2 Digiquartz Software 3 2 1 Digiquartz CD Library The Digiquartz Library CD contains software and product literature The Literature subdirectory contains the directories e Adobe Acrobat e Product Data Sheet The Acrobat subdirectory includes the Adobe Acrobat Reader installation files This program is needed to view the Product Data Sheets The Data Sheets subdirectory contains the product literature files in Adobe PDF format You will need an installed version of the Adobe Acrobat Reader to view print these files You can access these files from the menu program which starts automatically under Windows 95 98 You must start these files from the file manager program for Windows 3 X The Software subdirectory contains e Digiquartz Assistant 32 bit Windows Only e Digiquartz Interactive 16 32 bit Windows e Samples 16 amp 32 bit Windows Utilities directories MS DOS based software MET3A Installation Operation amp Maintenance Guide Page 4 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 The Digiquartz Assistant subdirectory includes the installation files for Digiquartz Assistant software DQA DQA is a 32 bit program and cannot be run under Windows 3 X You can start the installation either from the menu program which starts automatically under Windows 95 98 or from Explorer go to the Digiqu
8. Resolution Better than 0 001 hPa Accuracy including pressure hysteresis repeatability linearity amp temperature conformance Better than 0 08 hPa Stability Better than 0 1 hPa per year TEMPERATURE PLATINUM RESISTANCE TEMPERATURE PROBE Range 50 to 60 deg C Resolution Better than 0 01 deg C Accuracy Better than 0 1 deg C Stability Better than 0 1 deg C per year RELATIVE HUMIDITY CAPACITANCE PROBE Range 0 to 100 Accuracy Better than 2 RH at 25 deg C Saturation recovery time 2 minutes or less METAA Installation Operation amp Maintenance Guide Page 3 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 3 Bench Verification Test 3 4 Required Test And Installation Components You will need the following items to complete your bench test and field installation 1 MET3A Meteorological Measurement System P N 1539 00X Specification Drawing No 7556 004 2 MET3A Interface Cable P N 2319 XXX Digiquartz CD Library P N 6732 201 Ver 2 1 4 Power Breakout Supply Kit P N 1291 001 9 to 12 VDC from 110 VAC or P N 1291 002 9 to 12 VDC from 220 VAC 5 GPS Receiver Interface Adapter Cable consult factory PC with Windows 3 X or above 7 7 16 wrench for bracket installation These items may be optional for your field installation To verify the operation of the device with a PC you will require an external power source and breakout as the PC serial port does not supply power to the
9. mI eme n henn nennen nnne nhi n sese esse esset sss sd ss dnd na 8 5 COMMANDS ierit oves eoe oaeoi eve aos eu vu toe U osuere esee ve Foedus e eee sus o eu ei ep osos opo rosas ro Poe Une Va sisi Eo URP Re EER 9 5 1 MET3A COMMAND DESCRIPTIONS ccccccecceeeceeeeceeueeeeueceeueuseaeceeueueeuauseaueesaeeeeaeeeeaeeeeaeeees 9 5 2 ASPIRATION FAN STATUS INDICATOR 0cccc0ececeecsceeceeeececuuceeuuceeueceeueceeueseeaeeeuaeeeaeeesaaeees 14 5 8 DIGIQUARTZ INTELLIGENT INTERFACE COMMANDS NOT SUPPORTED BY THE MET32A 14 6 MAINTENANCE isesissssccciscssevetsvsdevssscsccsslsvadecssevascvsdevacecssevasevsdescccesansesevsesvedessncesessbsvegesssecadessseees 15 6 1 MAINTENANCE PROCEDURES ceccceeceeseceeeceeuececuuceeuuceeuuceeuuceeueesauceeaueeeaueesaueeeaneusaess 15 6 1 1 Barometer Port Removal i se ee N deeds es edese rede ee dues hed dde obe den 15 6 1 2 Cleaning the Barometer Condensation Drain eese 15 6 1 3 Cleaning the Temperature Humidity Sensor eese eene 15 6 1 4 Aspiration Fan Replacement eese eene enne 16 7 GPS RECEIVER INTERFACE INFORMAT IOON cccccccscccccsssssssssccccccsscssssscccccceccsssssccscoees 17 7 1 ASHTECH Z SERIES RECEIVERS 55 eese tte eee eee voti en ezGierts abeciets e HORE TOR EDU Ie aaa 17 72 ASHTECHUZ GGRS RECEIVERS isin ite ei teeieiee iore de ee eite lee eite eie CDS ei CoD Po ELDER 19 7 3 TRIMBLE NAVIGATION SERIES 4000SSE RECEIVERS 00cccccc
10. the cursor Using the arrow keys toggle the cursor to the selected serial port Press the enter e key to activate the serial port menu o Using the arrow keys toggle the cursor to the MET field Use the key to toggle the MET field to ON Press the enter e key to confirm the MET ON status MET3A Installation Operation amp Maintenance Guide Page 17 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 The Ashtech Z 12 has now been programmed to acquire MET data every five seconds To confirm this go to screen 9 where the MET3A temperature pressure and humidity will be displayed These MET data will be displayed in real time on screen and will also be written to the Ashtech D file every five seconds Please consult the Ashtech CGRS manual for additional information on downloading and interpreting the D file Note If no data are displayed use the Digiquartz Interactive DQI program supplied with the unit to change the pressure units to Bar This is accessed using the UN command Outputting the MET Data in Real time In addition to storing the MET data within the Ashtech receiver these data can also be output in real time through any one of the remaining serial ports not in use Please note that it is not prudent to output MET data on the same port to which the MET station is connected The following example demonstrates how to output the MET data in real time a Turn on the receiver a Push the 4 button on the front
11. Command 0100TT Response 000122 23 0001 22 23 example of negative temperature values Note The fan status indication applies to the TT A1 and P9 commands 5 3 Digiquartz Intelligent Interface Commands Not Supported by the MET3A The following commands are not supported in the MET3A Refer to Digiquartz Programming and Operations manual for descriptions Display Commands DC DD DP DR DV Tare Commands BP OP ZS ZV ZL 16 Bit Interface Commands LL LH IM IC METAA Installation Operation amp Maintenance Guide Page 14 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 6 Maintenance The MET3A Meteorological Measurement System is a highly accurate reliable instrument that is intended to operate for a long period of time without need of maintenance or calibration For critical installations yearly checks of temperature humidity and barometric pressure may be appropriate Transfer standards such as the Paroscientific Model 760 16B for pressure or a newly calibrated MET3A unit would be suitable for field verification of installed units Ensuring that the MET3A package remains clean and debris free will improve the overall performance The electronics package is environmentally sealed requires no cleaning or maintenance and contains no customer serviceable parts Opening of the sealed enclosure may affect the Paroscientific warranty 6 1 Maintenance Procedures Periodic cleaning of the housing bar
12. Description Permits the modification of a parameter value It must be sent with any command that modifies a parameter value Example 1 To change a Z1 coefficient value Command 0100EW 010021 Response 00012Z1 Example 2 To change a G2 coefficient value Command 0100EW 0100G2 Response 0001G2 Command P9 Description Read unified data word containing Pressure Temperature and Humidity measurement values based on the NMEA specification Note This command only functions with single devices and cannot be used in a serial loop The instrument only responds to P9 commands when the engineering units are set to Bar UN 3 Command 0100P9 Typical Response WIXDR P Pres Value gt B lt SN gt C lt Temp value gt C lt SN gt H lt Hum value gt P lt SN gt lt CR gt lt LF gt L_ Pressure L Temperature Humidity Transducer Field Units Pressure P B Bar Temperature C C Celsius Humidity H P Percent lt SN gt Transducer Serial Number Typically DQ METAA Installation Operation amp Maintenance Guide Page 9 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Command L1 Description Provides pressure temperature and RH measurement data in a unified fixed field length format This format simplifies the parsing of the individual measurement values and enhances the MET3A s compatibility with commercial data loggers such as the Handar 555 Data Collection P
13. E GROUND DATA IN PIN 3 BROWN I 6 NO CONNECT GND PIN 2 WHITE PIN 7 NO CONNECT VPE PINCTORED PIN 8 NO CONNECT J j PIN 9 RED POWER SHELL L SHELL J gt Earth Ground BOOT W W FISCHER 104 861 Sait ALPHA 35123 H b fr mfm EHME ae HE EN LAST THREE DIGITS OF PART NUMBER 9 DEFINES CABLE LENGTH IN METERS EXAMPLE 2319 030 30 METERS OF CABLE LENGTH TOLERANCE 1 TO 10 METERS 15 M CONNECTOR CONNECTOR W W FISCHER S1044065 130x 11 PLUS METERS 5 M ucc CLAMP ASSY W W FISCHER 3104 2 7 7 B W METALIZED SHELL ps aite ao J OOoooo 1 1 C0000 DE9 S DE9 P INDEXING KEY FRONT VIEW OF REAR VIEW OF CONNECTOR PIN OUTS CONNECTOR PIN OUTS METAA Installation Operation amp Maintenance Guide Page 8 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 5 Commands 5 1 MET3A Command Descriptions The MET3A intelligent interface supports a variety of commands that may be used to configure the unit and retrieve data Refer to the Digiquartz amp Programming and Operations Manual Document 8107 001 for a list of commands With the exception of the EW command the following commands are unique to the MET3A These commands supplement the commands listed in the Programming and Operations Manual for other Paroscientific products Command EW
14. GPS week gt The MET data has the format XDR P Pres Value gt B lt SN gt C lt Temp Value gt C lt SN gt H lt Hum Value gt P lt SN gt The data between the C s is the temperature in degrees Celsius that the MET station is measuring 7 3 Trimble Navigation Series 4000SSE Receivers The Trimble receiver should have firmware version 7 26 or later installed in order to support auxiliary meteorological devices It is not necessary to use an initialization string with the MET3A Use the following command substring 0100P9 to invoke a data response Our auxiliary power adapter may be required depending on the age of your receiver 7 4 Allen Osborne TurboRogue Receivers TBD 7 5 Leica LB2 Receivers It is not necessary to use an initialization string Use the following command substring 0100P9 to invoke a data response 7 6 Javad Navigation Systems JNS Receivers firmware 1 9 or later Plug the interface cable into Serial C Port of the receiver using an appropriate DB 9 null modem gender changer and the standard JNS serial cable Unless a special JNS cable is used the user must supply power using Paroscientific s power adapter module See section 3 1 Turn on the receiver Run PC CDU and connect to the receiver Go to menu File and select Manual mode Send the command set dev ser c rate 9600 to set the baud rate of serial port C Send the command set dev ser c ewrap on Send the command set dev ser c imode ec
15. OFF Input power off M FLICKERING Activity on RS 232 receive line OFF No activity on RS 232 receive line Yellow FLICKERING Activity on RS 232 transmit line OFF No activity on RS 232 transmit line METAA Installation Operation amp Maintenance Guide Page 6 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 4 Field Installation This section discusses physical installation of the MET3A and interfacing the MET3A to the data acquisition system 4 1 Physical Installation and Mounting The MET3A is packaged to withstand adverse field conditions and no additional shielding or protection is required We recommend that the MET3A interface cable used to connect to the recording device be protected from long term exposure to the elements A typical installation will include placing the cable in conduit to ensure extended cable life and reliable data transmission Proper cable strain relief will minimize cable and connector damage Install the mounting bracket on a pole of not more than 2 inches in diameter An optional flat monument mounting plate is available Be sure the mounting fixture and structure are capable of supporting the weight of the MET3A under adverse weather conditions The mounting hardware supplied with the MET3A provides ground isolation from the mounting pole No other ground connection should be made except at the recording device through the cable shield and connector shells as shown in section 4 2
16. Paroscientific Inc MET3A Meteorological Measurement System Installation Operation and Maintenance Guide Document No 8360 002 Rev K 8 1 2002 Paroscientific Inc Digiquartz Pressure Instrumentation Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Table of Contents 1 IN ERODUCT ION prc eea 3 2 PERFORMANCE iscccscssescesescebevsev scessaveedesesvecdesscvieleveovesnccecvielssoovescgeecv vseseosevesseev edsseavevssssesdetetees 3 3 BENCH VERIFICATION TEST seeseeesooossssseccoooossssecooossssseecooosessseecooosssseecoooosesseesoooosesseeeooossess 4 3 1 REQUIRED TEST AND INSTALLATION COMPONENTS ccccceecseeceeecesaeceeueeesueceeueueeaeseeaeeeeaeeees 4 3 2 DIGIQUARTZ SOFTWARE ccscccceceeceecesececeesccccessceceseccenseeseseecuseeseseeseseseuseeteusestutsesenstess 4 3 2 1 Digiquartz CD Library DV one am NGA von bad tod tdv 4 3 2 2 Digiquartz Interactive DQI Software Installation eene 5 3 3 MET3 A BENCH TEST PROCEDURE 0 cccccceecsceececeeceeeesceuceceeceueueeeueeueeeeeuueeeaueeuaneenaaes 6 SA STATUS INDICATORS tots risit sonal ace lin EL siti tidie c dive tete Do ee tes tee cue ee lah 6 4 BIE LD INSTALLATION one ooo oreet etre o epo a eee eoe ooo tte eene ve tov oe ave u daa o Pop VA SN ET ETE UP E PNE NPTREP 7 4 1 PHYSICAL INSTALLATION AND MOUNTING sene rennen nnn nrnn trennt erint sss nass snas nnns 7 4 2 MET3A CONNECTOR PINOUTS eessseeee
17. T3A to the Ashtech Z 12 Note The Z 12 receivers with serial numbers beginning with LPxxxx are factory configured to power up the MET3A directly through pin 16 They can be easily identified by the gray body color Z 12 receivers with serial numbers beginning with 700xxxx do not have power on pin 16 and therefore require a power breakout kit available from Paroscientific See page 3 section 3 1 item 4 for a description However some 700 series Z 12 s blue body color have had a Magellan factory mod performed that supplies power to pin 16 This can only be verified by using a voltmeter A special cable is required for proper meteorological station operation This cable is provided by Paroscientific part number 1499 001 This cable connects the Meteorological Station directly to the Ashtech GPS receiver Please note that the standard download cable shipped with the Ashtech receiver part no 700617 will not work Plug the interface cable into any one of the serial ports of the receiver a Push the 4 button on the front of the Ashtech Z 12 to access screen 4 a Press the enter e key to activate the cursor Using the arrow keys toggle the cursor to the selected serial port a Press the enter key e to activate the serial port menu a Using the arrow keys toggle the cursor to the Baud Rate field Use the key to toggle the Baud Rate to 9600 Press the enter e key to confirm the Baud Rate Q Press the enter e key to activate
18. artz Assistant subdirectory on your CD and double click on the setup exe program This will start the installation The Digiquartz Interactive subdirectory includes a readme file and the DQI1 1 subdirectory The installation files for Digiquartz Interactive software are in the DQI1 1 subdirectory From Windows 95 you can start the installation from the menu program or from File Explorer From Windows 3 X you should use File Manager go to the DQI1 1 subdirectory and double click on setup exe program The Samples subdirectory includes sample code for Labview and Visual Basic programming environment to communicate with Digiquartz Intelligent Instruments In the Labview subdirectory there is a logger program including the installable version and some sample VIs In the Visual Basic subdirectory there is Visual Basic source code and an installable program which demonstrate how to communicate with Digiquartz Intelligent Instruments The Utilities subdirectory includes some MS DOS utility programs Digiquartz is a registered trademark of Paroscientific Inc Acrobat Reader is a registered trademark of Adobe Inc Windows is a registered trademark of Microsoft Corporation 3 2 2 Digiquartz Interactive DQI Software Installation Windows 3 X To install DQI start Windows and from the File Manager select your CD drive generally D Go to the DQI1 1 subdirectory and double click on setup exe The program will check your system configurat
19. bered with each number corresponding to one of the steps provided below the figure METAA Installation Operation amp Maintenance Guide Page 21 Paroscientific Inc Supplied by NovAtel Document No 8360 002 Rev K 8 1 2002 MET3A T l l l E l E oo ara SEEEN EEA i To Receiver i 3 Power Supply i is 1 Power l l To PC Deo Breakout o9 P VEM 1 4 a 1 Receiver dependent ca d i MET3A i connector i DE9S DE9 P DE9 S iio m WE nter To Antenna MEM o Gable 1 l Receiver E 1 Sold Separately 1 Attach the interface cable to the port located on the bottom surface of the MET3A 2 Attach the DE9 S connector of the interface cable to the DE9 P connector of the power breakout 3 Plug the AC adapter block at the end of the power cable into an outlet Insert the plug at the other end of the power cable into the port on the side of the breakout Once the meteorological station is powered verify the power LED is on Complete the system by following the steps provided in either MPC Receiver Set Up or OEM4 Family Receiver Set Up depending on the receiver being used MPC GPS Receiver Set Up 1 Setup the MPC as described in the Quick Start section of the Modulated Precision Clock MPC User Manual including supplying power to the receiver and configuring your Internet connection Pr
20. ccecseeeceeeeceeuseeaeeeeaeeeeaeeees 20 7 4 ALLEN OSBORNE TURBOROGUE RECEIVERS ccccceeceeeececeeceeueceeueceeueueeaeeeaeeeaeeeeaaeees 20 TD LEICA LBZ RECEIVERS utom i eines teen eL NOM Din eM Miei IG Mes I LS LOIR 20 7 6 JAVAD NAVIGATION SYSTEMS JNS RECEIVERS FIRMWARE 1 9 OR LATER 20 YT JNOVATELEREGEIVERS amp S Soie eie iie ok hh LAB Ind LI b coi OM De A o RIO IRIS efr 21 8 NOTES ON CALIBRATION OF MET3A SENSORS cccsccscsssscecessescccessccccssssccesesseccesessesers 24 8 1 PRESSURE SENSOR isete sisi te se ee pace sepa Papa pe ee pa Sepa Do Ursa epa e babe pape a ge pa bea DO Dn pa Desa on 24 8 2 PRESSURE CALIBRATION OVERVIEW cccccceccceeccceeceeececeucseeuceeeuseeeeseeaueeeaueeeaeeeaeeeeaeeees 24 8 3 TEMPERATURE SENSOR cccecccecsceececeececuececuucecuuceeeuceeeuceeaucesaseeaeeeeaaseeaueeeaeseeaeeesaeees 24 8 4 TEMPERATURE CALIBRATION OVERVIEW cscseeee enhn nnne nrsnn nr snn nsns rss nsns adsl 24 8 5 RELATIVE HUMIDITY SENSOR ceccccececeececeececuececeuceceececeuceeeuceeauseeueeeaeeeeaeesaseeaeeeeaaeees 25 8 6 RELATIVE HUMIDITY CALIBRATION 0cccceecceeececeeceeuecseeuceeuuceceuceeeuceeauseeaaeeeaueeeaeeeeaeeees 25 9 MET3A INTELLIGENT INTERFACE COMMAND SUMMARY ccccssssssscccccsscssscsceeccees 26 10 CUSTOMER NOTE S eot traen tesi eoere cds cotacesbeskcbcdeculasadensisecdevbscsesdesseceecscotssecbevsecde 27 11 TECHNICAL SUPPORT joss csiguvcec sciccsecectec
21. decscocevessetessooscecsvevscSegeosecsescusecsegeustesusvecessesvsceesesves 28 12 ADDENDU Mit AAE EAE EA SA EEE EAEE EEE EA AER 29 MET3A Installation Operation amp Maintenance Guide Page 2 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 1 Introduction The Paroscientific MET3A Meteorological Measurement System is a precision instrument that measures barometric pressure temperature and relative humidity The MET3A uses a tuned barometric pressure port to minimize the pressure effects of driving wind and a fan aspirated temperature humidity port to reduce the effects of solar radiation and optimize humidity saturation recovery time The MET3A has modest power requirements 7 to 16VDC 105mA nominal 200mA maximum and incorporates a bi directional RS 232 interface for data acquisition and instrument configuration The MET3A may be interfaced to a variety of instruments including personal computers GPS receivers and data loggers The MET3A is packaged in a rugged weather resistant housing with a waterproof connector to provide reliable operation under adverse field conditions Please access the Paroscientific internet site http www paroscientific com to obtain the latest product information and application notes 2 Performance Product is defined by Specification Control Drawing Specifications subject to change without notice PRESSURE DIGIQUARTZ BAROMETRIC STANDARD Range 620 to 1100hPa 9 to 16 psia
22. derside of the upper body adjacent to the electrical connector Inspect the screen for contamination and if necessary clean the screen with a nylon brush and distilled water 6 1 3 Cleaning the Temperature Humidity Sensor You may visually check the aspirated portion of the enclosure for contamination Prior to any cleaning activity turn off the power The screens are intended to prevent large particles from entering the system Clean these with a nylon brush It is necessary to remove the lower portion of the MET3A aspirated temperature humidity system to access the sensor Locate the two hex head screws found just below the upper screen METAA Installation Operation amp Maintenance Guide Page 15 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 and remove using a 3 32 Allen hex wrench Carefully slide the outer housing down You may encounter a small amount of resistance while removing this housing due to the O ring seals Do not force the housing off the assembly Once removed you will see the temperature RH sensor mounted within the isothermal block Clean the sensor screen with distilled water Sensors which have become heavily contaminated may be scrubbed off with a nylon brush and distilled water Inspect or replace and lubricate the O rings with any silicone based O ring lubricant Carefully re assemble the outer housing Remove and retain these two screws Remove housing lower vertically 6 1 4 Aspiratio
23. ecision Clock Website in order to access the Modulated 2 Connect the DE9 S connector on the MET3A power breakout to the DGPS port MET3A Installation Operation amp Maintenance Guide Page 22 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 on the rear panel of the MPC using the serial cable For the location of the DGPS port please see the section entitled Hear Panel Functionality in the Modulated Precision Clock MPC User Manual Set up the software and logging functions per the Modulated Precision Clock MPC User Manual OEMA Family Receiver Set Up To capture data using a receiver from the OEM4 family complete the following steps per the OEM4 Family User Manual Volume 1 1 OM ee ee Set up the receiver as described in the Quick Start section of the OEM4 Family User Manual Volume 1 including supplying power to the receiver and connecting an antenna Load firmware that supports meteorological data logging on to the receiver Load supplementary software on to the receiver Connect the meteorological station and the receiver Configure the receiver to log the meteorological data To download the user manuals for either the MPC or OEM4 family of receivers please visit the Product Manuals section NovAtel s website at www novatel com Products productmanuals html For more information on NovAtel receivers visit NovAtel s website at www novatel com METAA Installation Operation amp Maintena
24. element It was selected for its accuracy stability and resistance to contamination Its output is corrected for temperature effects over a wide temperature range The recovery time of the aspirated RH sensor is typically less than 2 minutes Very large steps in humidity can take longer to reach full equilibrium A step change of 7596 RH settles within 596 of final value in 2 minutes and within 196 of final value in 5 minutes In addition there can be hysteresis effects of a few percent after prolonged exposure to humidity above 90 RH 8 6 Relative Humidity Calibration The MET3A humidity sensor is a standard humidity probe characterized by the manufacturer All MET3A units are conformance tested against a transfer standard to ensure proper performance MET3A Installation Operation amp Maintenance Guide Page 25 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 9 METS3A Intelligent Interface Command Summary COMMAND DESCRIPTION INPUT COMMAND OUTPUT RESPONSE PO Sample and respond with NMEA formatted data values 0100P9 n S WLXDR L1 Unified Fixed Field Length Data Record otoo 1 1 SeeSection5 1 NH Return User Defined NMEA header WI default 0100NH 0001NH WI Sample amp return an external humidity measurement in percentage L1 NH Sample amp return an analog integer count for analog channel 1 T N2 Samp
25. ho Send the command set dev ser c echo cur log That command assumes that you are logging to data recording memory if logging using a PC CDU to serial port A then send the command set dev ser c echo dev ser a instead METAA Installation Operation amp Maintenance Guide Page 20 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Send the command em dev ser c misc MET3 600 to request data from the MET3 every 600 seconds 10 minutes Other values can be specified the MET3 data will be collected at standardized epochs such as 00 10 00 00 20 00 etc Then start data logging using one of the usual methods PCCDU or Minter Settings are retained through power cycles so it is not necessary to send manual commands again unless you change the device on serial port C Commands dm dev ser c misc MET3 and set dev ser c echo dev null can be used to turn off the data acquisition NOTE A temporary program which creates a RINEX MET file from a jns file is available from DougHo niceties com For more information or technical support on JNS receivers visit http www javad com 7 7 NovAtel Receivers Our MET3A is compatible with the following NovAtel receivers e Modulated Precision Clock MPC receiver e OEM4 family of receivers including o OEM4 o Euro4 o PowerPak series o ProPak series METS3A Station Set Up Power the MET3A station by creating the connections shown in the Figure below Each of the connections is num
26. humidity input Command 0100N2 Response 0001 Command AR Description Read or set current analog resolution If AR 0 then output resolution is 0 1 degrees C 0 1 RH If AR 1 then output resolution is 0 01 degrees C 0 1 RH Command 0100AR Response 0001AR 0 To change AR value Command 0100EW 0100AR 1 Response 0001AR 1 Command Z1 Description Read or set zero adjustment coefficient for calculated temperature value Command 0100Z1 Response 0001Z1 2 Note Changing this parameter effects the temperature calibration Command Z2 Description Read or set zero adjustment coefficient for calculated humidity value Command 0100Z2 Response 0001Z2 Note Changing this parameter effects the humidity calibration Command M1 Description Read or set span adjustment coefficient for calculated temperature value Command 0100M1 Response 0001M1 Note Changing this parameter effects the temperature calibration Note The adjusted output is expressed as T M1 T Z1 changing M1 will affect the instrument s adjusted zero offset if M1 is not 1 MET3A Installation Operation amp Maintenance Guide Page 12 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Command M2 Description Read or set span adjustment coefficient for calculated humidity value Command 0100M2 Response 0001M2 Note Changing this parameter effects the temperature calibration
27. ion information and will create a new program group and an icon Windows 95 98 To install DQI start Windows and insert the CDROM The Windows95 autoCD should run the menu program for installation of the Digiquartz software Double click on DQI1 1 on the menu page Alternatively Explorer can be used to initiate the installation program Double click on the Setup program within the main directory on the CD METAA Installation Operation amp Maintenance Guide Page 5 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 3 3 MET3 A Bench Test Procedure 1 Connect the MET3A interface cable to the power breakout and PC serial port 2 Apply power to the unit 7 to 16 Vdc at 105 mA nominal 200 mA maximum 3 Start the DQI program Select the Communication Port to which the MET3A is connected and press Start The communication baud rate of the unit has been pre set to 9600 baud 8 data bits and 1 stop bit DQI will try to communicate with an Intelligent Instrument on the selected Communication Port by using a succession of baud rates The screen will display a baud rate and instrument identification numbers upon successful communication 4 Click on the OK button 5 You should now see the DQI Configuration screen On the top menu bar click on Measure and select MET3 from the drop down list The MET3A measurement panel will appear on the screen Each measurement parameter has its own window Verify that the pressure tempera
28. latform Note The L1 command is only supported by MET3A firmware revision 1 02 and above The L1 command only functions with single devices and cannot be used in a serial loop Typical command 0100L 1 Typical response 098765 00 995874 23 45 045 7 1 lt cr gt lt lf gt The L1 data record is formatted as follows asterisk Hmmm AES Comma Pressure field i Comma Co e 5 34 o 34 O Termination characters 35 36 Pressure temperature and RH values are padded with leading and trailing zeroes as required to maintain a fixed field width The serial number field is padded with leading zeroes as required to maintain a fixed field width The decimal point always appears in the same character position within each field The pressure temperature and RH fields have explicit signs If the MET3A fan is operational a 1 is returned in the Fan Status field otherwise a 0 is returned To determine which firmware version is loaded activate the VR command VR returns the firmware version number stored in the program EPROM Example Command 0100VR Response 0001VR 01 01 METAA Installation Operation amp Maintenance Guide Page 10 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 Command NH Description Read or set NMEA header used in the P9 command response By default the NH NMEA Header string is set to produce the generic NMEA header WI The default P9 output looks like this
29. le amp return an analog integer count for analog channel 2 RH 0100N2 O001 HHH Return current analog resolution AR 0 then output resolution is 0 1 deg C 0 1 RH AR 1 then output resolution is 0 01 deg C 0 1 RH 0001AR 21 Set Return zero adjustment coefficient for analog channel 1 T Z2 Set Return zero adjustment coefficient for analog channel 2 RH 0100Z2 0001Z2 1HHHHHE Set Return the span adjustment coefficient for analog channel 1 T M2 Set Return the span adjustment coefficient for analog channel 2 RH 0100M2 0001M2 HHHHHE E1 Set Return temperature coefficient E1 0001E1 F1 Set Return temperature coefficient F1 0001F 1 G1 Set Return temperature coefficient G1 0001G1 H1 Set Return temperature coefficient H1 0001H1 K1 Set Return temperature coefficient K1 0001K1 E2 Set Return humidity coefficient E2 0001 E2 F2 Set Return humidity coefficient F2 0001 F2 G2 Set Return humidity coefficient G2 0001 G2 Set Return humidity coefficient H2 0001 H2 Set Return humidity coefficient K2 0001 K2 H2 K2 EW Enable EPROM write for one command string May be a global 99 0100EW cmd Cmd Response command Example Change E1 temperature coefficient to 0 1 0100EW 0100E1 0 1 0001E1 1000000 26 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 10 Customer Notes MET3A Installation Operation amp Maintenance Guide Page 27 Par
30. n Fan Replacement The internal fan used to provide airflow for the temperature and humidity probe is a highly reliable weather hardened device requiring little or no maintenance In the unlikely event of a failure do not replace it with a standard fan assembly t is recommended that you contact Paroscientific to obtain all the appropriate replacement parts and instructions for performing this procedure METAA Installation Operation amp Maintenance Guide Page 16 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 7 GPS Receiver Interface Information Listed below are programming instructions which will allow you to activate your GPS receivers auxiliary meteorological data acquisition function The information in this section is subject to change by the receiver manufacturer It is recommended that you reference your receiver s operations manual for further information Please contact us with any additional questions about these interfaces as they change frequently In all cases the GPS receiver uses the P9 command to invoke a data response The data response will be in the NMEA format 7 1 Ashtech Z Series Receivers Interfacing the MET3A to the Ashtech Receiver A Meteorological Station can be connected to any of the four independent serial ports on the Ashtech dual frequency GPS receivers The Meteorological Station can even be powered by the Ashtech receiver Please follow the directions below to interface the Paroscientific ME
31. nce Guide Page 23 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 8 Notes On Calibration of MET3A Sensors 8 1 Pressure Sensor The MET3A uses a Digiquartz Barometric Standard that offers 0 08 hPa accuracy and a 3 year stability warranty of better than 0 1 hPa per year 8 2 Pressure Calibration Overview All Digiquartz Barometric Standard transducers are calibrated and conformance tested over their operational pressure and temperature ranges against NIST traceable standards Transducer output and applied pressure are recorded at test pressures that span the transducer range over a minimum of at least six different temperatures These measurements are used to derive calibration coefficients for the best fit for each individual transducer The differences between the indicated pressures and the applied pressures from the primary standard are less than 0 08 hPa for Digiquartz barometers All Digiquartz barometers are stability tested for a minimum of one month after calibration 8 3 Temperature Sensor The temperature sensor is a precision thin film platinum 1000 ohm resistance element RTD The sensor was chosen for its accuracy long term stability and ease of re calibration The resolution of the sensor is better than 0 01 degree C and the accuracy is better than 0 1 degree C over the full temperature range from 50 to 60 degrees C The time constant of the fully packaged sensor is approximately 15 minutes and
32. of the Ashtech Z 12 to access screen 4 a Press the enter e key to activate the cursor Using the arrow keys toggle the cursor to one of the un used serial ports a Press the enter e key to activate the selected port menu a Using the arrow keys toggle the cursor to the Baud Rate field Use the key to toggle the Baud Rate field to the desired output rate Please note that this rate can be set from 300 to 115200 baud but rates of 9600 and higher are recommended Press the enter e key to activate the cursor Using the arrow keys toggle the cursor to the selected port a Press the enter e key to activate the port menu a Using the arrow keys toggle the cursor to the NMEA field Use the key to toggle the NMEA field to ON Press 1 to access the NMEA sub menu Using the arrow keys toggle to the XDR field Press the key to toggle the XDR message to ON Press the enter e key to confirm the change The MET data will be output through the selected serial port at the chosen Baud Rate The MET data will be contained in the NMEA industry standard XDR message For additional information please consult the Ashtech CGRS manual Ashtech offers a program called ASHTORIN which converts the meteorological data file to a RINEX file Please contact Ashtech Customer Support for more information 1 800 229 2400 SN Transducer Serial Number Typically DQ METAA Installation Operation amp Maintenance Guide Page 18
33. ometer port inlet and temperature humidity sensor is the only recommended physical maintenance of the unit 6 1 1 Barometer Port Removal The cleaning procedure consists of unscrewing the barometer port in a counterclockwise direction cleaning out any debris from between the upper and lower plates and the adjacent orifice plates and checking for unobstructed flow through the port assembly If flow is still obstructed the upper plate and upper orifice plate may be removed by unscrewing the 2 20UNF flat head socket screw on top of the port Use a 5 16 Allen hex wrench This allows access to both the orifice plates and the interior of the upper end of the column Remove any debris from the various orifices and reassemble applying a small amount of Loctite 609 to the screw Torque the screw to 25 ft lbs to secure the assembly Prior to re installation of the pressure port it is recommended that the Teflon pipe tape on the male 37 thread be removed and replaced with at least three wraps of fresh tape Carefully re mate the barometer port to the main body of the instrument and screw the two together HAND TIGHT Do not over tighten these threads Over tightening could cause damage to the threads and impede future dis assembly Do not permit water to enter the exposed port on the electronics enclosure 6 1 2 Cleaning the Barometer Condensation Drain The condensation drain is the brass fitting with a sintered stainless steel screen located on the un
34. oscientific Inc Document No 8360 002 Rev K 8 1 2002 11 Technical Support For additional technical support please contact an application engineer at Paroscientific Inc 4500 148th Ave N E Redmond WA 98052 USA Tel 425 883 8700 Fax 425 867 5407 Internet www paroscientific com Email support paroscientific com For further physical details of this instrument please contact our web site For support of interfaces between the MET3A and customer GPS systems please access the technical support section on our web site or contact the GPS manufacturer directly MET3A Installation Operation amp Maintenance Guide Page 28 Paroscientific Inc Document No 8360 002 Rev K 8 1 2002 12 ADDENDUM MET3A units that are delivered with the barometer port dismounted from the main body should be assembled in the following manner a Apply at least three wraps of Teflon pipe tape supplied with unit to the 3 4 male pipe thread on the top of the main body of the instrument Ensure that the entire thread is adequately covered with the tape a Carefully mate the female thread at the base of the barometer port with the taped male thread and screw the two together HAND TIGHT Do not over tighten these threads Over tightening could cause damage to the threads and impede future dis assembly MET3A Installation Operation amp Maintenance Guide Page 29
35. ture and humidity fields have a reasonable data value f any field displays characters there may be a program or instrument problem The program Help file has troubleshooting suggestions The METS3A is shipped with a factory default configuration that is compatible with the software Should you encounter a problem check to be sure that the configuration parameters have not been inadvertently changed The RS 232 interface is capable of driving signals over distances of up to 30 meters with good quality shielded cable It is recommended that you bench test your unit with the installation cable especially if you are driving the signal a long distance If you are interfacing the unit to a GPS receiver it is recommended that you verify system operation before performing the field installation Refer to Section 6 for information on configuring and connecting the MET3A to your receiver The DQI Configuration panel can be used to check the configuration parameters 3 4 Status Indicators In early 2002 a status indicator panel was added to the MET3A These status indicators allow you to determine whether input power is applied to the unit and to monitor RS 232 serial activity The status indicator panel is located on the bottom of the large cylindrical body of the unit adjacent to the electrical connector The following table explains the function of the status indicators Indicator color Function Red ON Input power on
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