LOG_aLevel - GENERAL ACOUSTICS Echosounding, Sub
Contents
1. 18 555 FIle case 18 5 5 6 0 10015 mm 19 5 5 7 Tools StationN 5 emen 19 5 5 8 Tools StationN Show Traffic 19 5 5 9 Tools StationN Request 19 5 5 10 Tools StationN Minimize Maximize 19 5 5 11 Tools StationN Send 19 5 5 12 View 19 5 5 13 View Wave Statistic s 2 RE ins 19 5 5 14 View Application nnne nnns trennen 20 5 6 SQ HHI 20 5 7 Settings of a level 23 5 8 Setting of the real time 24 5 9 Eg o 25 5 10 Raw E diia 25 5 11 Storage of the wave statistic s suec 25 5 12 Data FOAL 25 5 13 26 5 13 1 PS amp Pararmneter strinig 26 5132 TIME SNO s cones co tire te Poner Rd 26 5 13 3 W2. L LOG alevel m M lt in Pa E a User Manual for Stationary and Mobile Version Vers 12 07 2007 GENERAL AC OUSTICS GENERAL YAcoUSTICS LOG alevel User Manual User notes LOG alevel User Manual Contents Aum P 3 22 System REESE RR RR RENE RR RR RAE 3 2 41 3 222 4 2 3 Description of standard 5 2 31 ROUSING 5 232 LOG 6 2 33 cR 7 2 3 4 Reference distance 7 2 35 LevelsensoruhiLb oca neh erin tind natant 8 2 4 Description of optional componentts c 8 3 RRR RRR 9 3 1 Fixing the reference distance 9 3 2 Mounting the supporting arm 9 3 3 Mounting the housing n nasa na san Rusa sana sa tE RARE anuo aua 11 3 4 Connecting the sensor
3. Prerequisite for the automatic triggering is that in the application settings the respective triggersare activated When the triggering occurs all level stations are configured automatically on continuous operation to the highest sampling rate The status is shown through a coloured blinking Storm Flood and holds at least for the time defined in the application settings under Tools message Options If at the end of this time one of the automatic triggers is yet active wind condition or Intemet waming the status is maintained fora further period that is also to be determined in the application settings This will be repeated until none of the triggering conditions is fulfilled orthe testing of the conditions was set off As long as the recording is active the settings of the single stations can no longer be changed The application settings can however be further changed only the change of the defined recording duration is used first with the next triggering The recording can be interrupted manually File Storm Hood Recording However if the automatic triggering conditions are still activated the recording would be immediately triggered again After finishing recording the last parameters of the level stations are reset again to their initial values before recording 5 15 Triggering by fulfilling of the wind condition 28 LOG alevel User Manual The option Wind Trigger Enabled must be activate
4. All LOG aLevel water gauge stations supplied by GENERAL ACOUSTICS are provided with stainless steel housings Different sizes are available from 300x300x200 up to 600x600x200 mm GENERAL YAcouUSTICS LOG alevel User Manual 2 3 2 LOG alevel Controller The LOG aLevel Controller module is the main unit of the system It controls the operation of the ULL sensor It can be remotely controlled by the user via the LOG aLevel Software provided See Chapter 5 for more information on this LOG aLevel Software can also be used directly in front of the controller for installation or sevice purposes through the RS 232 485 port The controller can be delivered with or without output socket for data logger Also the amount of sockets for sensors can vary depending on the amount of installed sensors Real time clock The realtime clock is integrated in the controller It is strongly suggested to work with UTC time to avoid duplicated time data sets due to changing to winter summertime GENERAL YAcouSTICS LOG alevel User Manual 233 Powersupply The power supply module provides all intemal voltages to the system Furthermore shut down and battery guard function are implemented The power supply module gets the input voltage from the AC power supply standard or battery option EJ L N V V LED ADJ INPUT OUTPUT 100 240Vac 12 3 5A 1 5A 50 60Hz _ y ACOUSTIC
5. See Appendixes for instructions on how to install extemal sensors provided LOG alevel User Manual 4 Measurement set up 41 Sensorcharacteristics LOG aLevel sensors of the type ULL are based on an ultrasound pulse echo technique They have been developed fortemporally and spatially high resolution measurement of distances in air The sensors permit a distance measurement ranging from 0 5 m to 6 5 8 5 10 m The advantages of the ultrasound sensors made by G A in comparison to common ultra sound sensors can be described as follows The acoustic beam pattem could be namowed to a beam cone below 3 and is valid not only for the sending but also forthe receiving process This is important to reduce the area size of the acoustic footprint onto the water surface in order to get only some small sections instead of a full wave ormany waves The minor side lobe was almost completely eliminated This means that there are no disturbances from objects outside the area of interest e g basin walls etc The sending power on one hand and the receiving sensibility on the other could be increased This helps much to reduce the number of lost pings immensely which may occuron very steep flanks of waves high resolution of the sensors results in a highly accurate wave measurement leading to an outstanding precise level sensing 42 Compensation using a reference measurement The mos accurate sound velocity compensation is made by a re
6. xxxx lt CR gt lt 1F gt also commentaries can emerge that are to be ignored They can be recognized by the lack of the equivalence sign 25 LOG alevel User Manual LOG aLevel water gauge stations send regularly a Header structure that contains all setting values the station followed by the time Afterthe headerfollow the single values 5 13 Example PS 200 1115 STAT 4550 3 0 2 60 240 0 0 33906 07 04 2006 14 34 30 000 L 945 L 954 5 13 1 PS Parameter string The fields in this string mean 1 Program name Version of the waterlevel gauge 2 Station ID 3 Station name 4 Reference value in m ft 5 Sampling period asindex O 3 correspondsto 1000 500 250 200 ms 6 Averaging asindex 0 5 correspondsto 0 10 30 60 300 600 5 7 Mode of operation 0 Off 1 Continuously 2 Periodically 3 Triggered Periodically Parameters 8 Measuring duration in seconds 9 Sleeping time in seconds Triggered Parameter 10 Activation level in m ft 11 Measuring duration in seconds These values are not changeable They are predefined in the firmware of the level station Please note Raw files recorded with the data loggerof the LOG aLevel water gauge stations do NOT presently contain the fields 8th until 11th in the PS String 5 13 2 T Time String The Time String represents the time of the next measurement y n indicates whetherthe PPS signal was available The PPSsignal
7. Maximize Enlarges and orreducesthe dialog of the respective level station 5 5 11 Tools StationN Send command Allows the input of a character string that is sent to a station This mechanism is only for test purposes 5 5 12 View Levels 5 5 13 View Wave Statistics Shifting of the y scale of the stations graphs Both graphsare always shown but only a Y scale at a time The scale can be changed in the option dialog See chapter Waves Statistic s 19 LOG alevel User Manual 5 5 14 View Application Log Enables the display of the application logs In the application log special events are indicated These are starting continuing and finishing the storm flood recording emor messages indications from the stations and similar The application log is not to be confused with the output files of the level stations 5 6 Settings Under Tools Options the general application settings are reached In the tab page Storm Hood Tiiggering the parameters for automatic triggering of the storm flood recording are set Web Site Trigger Enabled considers the notification of a storm flood on a web page see chapter storm flood recording The URL displayed address of the web page and the Keyword are defined in the LOG aLevel ini file Wind Trigger Enabled lets LOG Software consider the wind data of the level station that carries a wind gauge The wind minimum speed and the direction is defined A sector can
8. Wind String 27 5 13 4 Lleve SNo niece eet ote ioi epa ted eH CAM A EP 27 MINES rid T 27 5 136 SESINO 27 513 7 27 5 14 Storm flood recording 28 5 15 T ggering by fulfilling of the wind condition eere nennen 28 5 16 Triggering by flood waming in the annes 29 5 17 Manual 29 5 18 55 5 29 LOG alevel User Manual 519 ERR 30 8 TECHNICAL 5 5 34 9 DATA ae cl Am ee IA ag 35 1 Safety instructions For your own safety and for the safe operation of the system please read the following instructions carefully PRIOR to operating the system for the first time The LOG alevel water gauge station represents state of the art technology and comply with the latest safety regulations The manufacturer has made every effort to guarantee safe operation The user must ensure that the equipment is set up and installed in such a way that its safe usage is not impaired The instruments are factory tested and were delivered in a safe operational condition Th
9. and 1 Tumed In the section WebModule the parameters of the Intemet triggering of the storm flood recording are indicated Enabled 0 disables this feature and Enabled 1 enables it SourceCaption is a free label of the source for documentation purposes CheckPeriod is the time interval in minutes for querying the web page URL Uniform Resource Locator is the web address of the web site that contains the keyword Keyword is the keyword after which the search the web page is perfomed This search is not case sensitive 30 LOG alevel User Manual The StationN Sections describe the parameters of each level station Class describes the type of the level station class must correspond to the level station actually connected otherwise expanded capabilities of the station are not supported Solely for test purposes ascertainment of the connected station based on its ID should the Class Station be indicated forall stations Caption is a free label of the station COMPort is the number of the serial connection COMParams contains the interface parameters These must agree with the parameters of the COMPort server and or the extemal hardware LogFilename is the name without path of the file in which the raw data of the respective station are written DefaultSPC md is command line that is assumed when a level station does not react when starting the program So it is prevented that underunreliable reception condition
10. be indicated forthe main direction If for example the main direction is specified as 270 and the sector as 20 then wind directions between 260 and 280 will triggerthe recording 20 LOG alevel User Manual GENERAL DUSTICS Application Options Storm Flood Triggering Graph Settings Logging 7 Triggering Conditions Web Site Trigger Enabled URL Keyword v Wind Trigger Enabled 1st Condition Minimum Speed 15 0 2nd Condition Direction 270 Direction m s Sector 30 ecor 7 Recording Duration 3 00 hh mm Automatic extension of time 2 00 hh mm Duration is the minimum recording duration in hh mm after triggering Automatic extension of Time is the additional time duration Overtime of the recording if at the end of the recording time in Duration a condition is still fulfilled for the storm flood recording Through this mechanism is guaranteed that also inusually long floods are captured without that the recording time becomes improperly long In the tab page Graph Settings you can adjust the appearance of the output graphic Visible Interval is the visible period The visible period is independent of the recording duration defined through the buffer size 21 GENERAL ACOUSTICS LOG alevel User Manual Application Options d x si Logging Visible Interval 10 min Level Avera
11. can be adjusted in the ini file For the calculation only temporally related values are taken Values are considered as not temporally related when they present a time lag of more than 0 5 sto the preceding value In this case the waves statistics begin first again afterthe next 1 min interval 29 LOG alevel User Manual 5 19 LOG aLevel ini file This file is loaded when starting LOG aLevel Software It must be in the same folderas the LOG aLevelexe The section WebModule defines the behaviour of the triggering overa webpage Common SWHInterval 01 00 SWHMovingInterval 00 10 PSSTolerance 0 25 PSSEnabled 0 LevelUnit m WebModule Enabled 0 Enabled 1 SourceCaption BSH CheckPeriod 1 PSURL http www log aflow com STWTEST BSHDOC htm URL http www bsh de aktdat wvd wahome htm Keyword STURMFLUTWARNUNG StationO0 Class Station Caption STA1 ChannelParams source PIPE server 5 1 COMParams port 1 baud 9600 parity N data 8 stop 2 DefaultSPCmd 200 STA1 0 3 0 1 3600 7200 3000 46800 In the section Common the number of stations to be evaluated is indicated with STATIONO Sections with a number higher than N 1 are ignored Just as sections with unknown names e g StationOBac kup SWHinterval and SWHMovinginterval describe the time intervals of the waves statistics IN hh mm PSSEnabled and PSSTolerance are parameters forthe suppressing of peaksin the representation PSSEnabled 0 means Tumed off
12. clocks of all connected level stations can be reached under Tools Time settings Time settings 5 MM DD Y Y YY 55 555 07 02 2005 16 43 05 513 Use PC time Nienstedten v Include Harburger Schleuse v Include Exclude all Include all Set all Close Date and time can set under UIC With Set all the clocks marked in the list of the stations are set With Include all the entire list of stations can be marked and all the stations are taken out of the selection with Exclude all Also single clocks can be set by pressing the button Setof the respective station With Use PC Time the clocks of the level stations can be synchronised with the clock of the PC It should be taken into accountthatthis PC time is not usually UIC The manual setting of the real time clocks is not absolute and so exact to each otherasthe automatic setting through the optional satellite time is The eror lies in the orderof magnitude of seconds The setting of the time of a station means that a corresponding command is sent to the station In the moment of sending the current time of the station this is displayed gray in the dialogue As soon as the current time is reported by the level station the time appearsagain in the standard text colour If a station doesnot react the notice remains gray 24 LOG alevel User Manual 5 9 Log files LOG aLevel Software basically stores the raw data of ea
13. is operated at the highest rate The effective sampling rate is that which LOG aLevel Software receivesfrom the level station The Level Sampling Mode is the operation mode of the level station Off sets the station into a standby mode in which no task is started by itself It can be set again by LOG aLevel Software in one of the active modes Continuously lets the level station sample uninteruptedly at the selected rate Periodically lets the level station send data for certain periods of time defined by Measuring Duration and lets it sleep again for the period of time defined by Sleeping Duration Triggered lets the level station sample depending on a threshold value for the level Activation Level fora period of time defined by Measuring Duration The check box Amplitude Statistics sets the highest sampling rate because only at this value an examination of the waves statistic is possible Certain options of the level stations may not be available because they are not supported by the delivered hardware fimware 23 GENERALA ACOUSTICS LOG alevel User Manual 5 8 Setting of the real time clocks Each level station requires a time reference and has for that a real time clock that is controlled either by the time signal of the GPSsatellite or works autonomously In case the level station has an autonomous working real time clock it must be set by LOG_aLevel Software A central dialogue for setting the
14. is produced by satellite receiver for a high precision time determination When the signal is lost the time is determined from an intemal clock of the level station 26 LOG alevel User Manual 5 13 3 W Wind Sting In the case of a level station with wind gauge the wind data always follow the header The output isthe wind speed in m sand average wind direction in degrees 5 13 4 L Level String After a Header the L Strings containing the level in m ft are sent They are temporally referenced to the time in the T String its index effective sampling period The effective sampling period equals the sampling period if no averaging was defined If Averaging was carried out the effective sampling period comespondsto the Averaging 5 13 5 SP Sting The SP String Set parameters is sent to the LOG alevel water gauge stations in order to drive it It is amranged similarly to the the PS String it differs from that however in following points The first two parameters program version and station ID are not available because they cannot be changed The positions and lengths of the single fields are fixed The number values are to be filled up with empty spaces The lengths of the fields are Station name 4 reference value 5 Sampling period as index 1 Averaging as index 1 Mode of operation 1 Periodically Measuring duration 5 Periodically Sleeping time 5 Triggered Activation level 5 Triggered Measuring dura
15. 6 LOG alevel User Manual Now the LOG aLevel station can be put again in operation by sticking the connector of the battery into the plug 12V in the After some seconds the red LED of the Datenloggers beginsto blink ATIENTION The Compact Flash Card may not be pulled out during operation In such case the level LOG aLevel station must be tumed off and then set again in operation General Acoustic s GmbH Am Kiel Kanal 1 24106 Kiel 49 0 431 5 80 81 80 449 0 431 5 80 81 89 www G eneralAcoustics com info G eneralAcoustics com 37
16. Level Software is running 5 5 3 File Log Folder Lets the user determine the path of the log files All log files are stored the same path The names of the log files correspond to the station shorthand symbol This name can be changed in the ini file After the first run of the application the log folder isthe temporary folder of the user If the path indicated does not exist a message in the application log is issued 5 5 4 File All Continuously Instructs all the stations to work at the highest rate in the Continuously Mode 5 5 5 File All Stations off Stops the data output of all the stations until further notice by setting the sampling mode of the stations at Off The data transmission can always be resumed 18 3 i 8 LOG alevel User Manual 5 5 6 Tools Options Opens the settings dialog of the application See chapter Settings 5 5 7 Tools StationN Options Opensthe settingsdialog of each station See chapterSettings of a Station 5 5 8 Tools StationN Show Traffic Opens a window that shows the data traffic from the station to the application Outgoing data from the application are not shown 5 5 9 Tools StationN Request Parameters Lets LOG alevel Software request the current parameter set of the station This is only required in exceptional situations if for example unclarity exists about whether the level station is Online 5 5 10 Tools StationN Minimize
17. S CAUTION soon use ron USE RISK OF ELECTRIC autoranging power supply The AC autoranging power supply allowsforan automatic adjusting to the input voltage and a worldwide usage The operational range of the autoranging unit supplied is 100 240 V This module can be enhanced by an power supply UPS module 2 3 4 Reference distance unit The reference distance unit provides for a direct measurement of ultrasound velocity on air It consists of a highly accurate REF sensor a target and a plate for fixing to the supporting arm The reference sensor is calibrated with high accuracy Read Section 3 1 carefully for proper installation of the IMPORIANT Accidental disalignment reduces the accuracy of the system HANDLE THE SENSOR WITH CARE AVOIDING ANY SC RATC HES GENERAL ACOUSTICS LOG alevel User Manual The level sensor unit consists of the ULL sensor s and the mounting plate for screwing it to the supporting arm The number of sensors provided dependson your application Mounting plate IMPORIANT HANDLE THE SENSORS WITH CARE AVOIDING ANY SCRATCHES 2 4 Description of optional components See Annexes fora description of the optional components provided with your system IMPORTANT WHEN YOUR SYSTEM INCLUDES OPTIONAL COMPONENTS YOU MUST READ THE ANNEXES BEFORE INSTALLING THE LOG ALEVEL WATER GAUGE STATON LOG alevel User Manual 3 Startup Follow the next s
18. ach level station can be controlled independently from the others The settings can be always changed outside of a storm flood recording After filing out the dialog and confirming with the OK button the desired parameters set is sent to the level station The level station confirms the changes by retuming the parameter set with the new data Only after that the retumed confirmation data are accepted by the application This confirmation may take a while The dialog of a level station is reached under Menu Tools StationN Options or with the button of the station window or through the context menu ofthe waterlevel dialog The ID of the station is stored in the station and can not be changed by LOG _aLevel Software The Version of the level station consists of the name and the version number of the program that works in the microcontroller of the level station The Name of the station is changeable It has a maximum of 4 characters and should correspond to the location ofthe station The posible charactersare A Zand O 9 The Adjustment is an offset of the level in meters that compensates the position of the level stations so that the data received from several stations are related to the same datum The Level Sampling determines the native sampling rate of the level mea surement with the Rate and can cause with Averaging an averaging of the level values through the station Always when an Averaging takes place the level station
19. ains before undertaking cleaning Ensure there is no current Do not use aggressive cleaning chemicals liquid cleaners or sprays only use a damp cloth Never bring this or any other cloth into contact with parts of the system that will subsequently conduct electric ity e Never attempt to open the housing with objects or to insert objects into it Open it just using the appropiate key The voltage in the equipment can lead to short circuits and electric shocks e Only operate the LOG alevel water gauge station at the intended mains voltage of 230 VAC optionally 110 VAC Take care that power cables are wom abraded or otherwise defective When routing connecting cables make certain thatthe cables do not represent an obstacle or risk of tripping Itis imperative to isolate instruments from the mains in the following cases e If power cables or plugs are wom or damaged e If waterorany other liquid has found its way into one of the instruments e If the instrument is not working conectly despite following the specified operating instructions e If one ofthe instruments has fallen down or the chassis is damaged e If the instrument shows any noticeable departure from normal operation e Ifthe sensorconnections have become wet With the exception of the actions explicitly specified in this manual you should never attempt your own repairs on components of LOG _aLevel water gauge station Besides the resulting revocation of w
20. arranty coverage you also risk an electric shock or other injury from the components All maintenance work unless explicitly described in the manual should only be canied out by A R LOG alevel User Manual 2 General 21 Overview G A LOG_aLevel isa complete contact free stand alone water level gauge on the basis of ultrasonic sensors The system works automatically and can work independently of any extemal connections High performance ultrasonic sensors guarantee robust reliable fast and precise measurements of all kind of water levels including steep waves Additionally different energy sources like solar panels or wind generators are offered All acquired data can be stored ona low power datalogger on a PCMCIA card Altematively remotelly controlled real time data transmission can be provided over radio Ethemet telephone modem or GPRS A unique characteristic of LOG_aLevel water gauge station is the measurement of the velocity of ultrasound in air by an additional highly accurate transducer This direct measurement over a fixed reference distance allows to compensate for the different variables affecting the velocity of the ultrasound waves in air at any time resulting in a highly accurate level measurement applicationsof LOG_aLevel water gauge stationsare e Water level monitoring e Wave measurement e Flood waming and prediction e Tide monitoring e Reservoir control e Ground water monitoring e Snow height mea
21. ch level station consecutively in their respective files In addition to that the results of the waves statistics can be stored in a further file 5 10 Raw data The character strings that are received from the LOG aLevel water gauge stations are continuously stored files This record cannot be tumed off during the running time A Log is assigned to each LOG water gauge stations The Log files are independent from each otherbut are located in the same folder These files contain text with lines limited by CRLF Every 10 seconds LOG Software stores in the background the last data received With the function File Hush And Hold the recording can be stopped fora period of time In doing so no data go 105 data gathered in the respective period of time are written with the next storage cycle Flushing 5 11 Storage of the wave statistics The storage of the waves statistics can be tumed on and off in the option dialogue The storage mechanism is the same to that used with in the raw data The file name corresponds to that of the raw data file except the extension If i e the raw data file is called NITB log the file with the waves statistics is called NITB msd Thisfile contains times value couplesof the wave statistic s 5 12 Data format The raw data of the level stations consist of ASC whose lines are finished with CR LF Next to the significative character strings of the form CMD
22. d Prerequisite is first that a certain wind strength is reached and secondly that the wind blows from a certain sector 5 16 Triggering by flood waming in the Intemet An URL and a keyword that triggers the storm flood recording can be indicated in the LOG aLevel ini file Keyword storm flood waming If the triggering through the web is activated with the check box Website Trigger Enabled a given website will by checking the triggering conditions every 5 seconds to test whether the keyword is found on the website Prerequisite for the check of the extemal website is an active intemetaccess The check of the extemal web page takes place in the background once in a minute This period of time can be changed in the LOG_aLevel ini file 5 17 Manual triggering The recording can always be initiated by selecting the menu File Storm flood Recording orby clicking on the button with the escape symbol 5 18 Waves statistics The significant wave height H 3 is computed only by LOG aLevel Software if mea surement are being taken at the highest sampling rate The Interval of 1 minute SWHInterval can be changed in the INI file The changing of the mean water level is computed with the Gaussian curve fitting method over the SWH Interval to neglegt his influence from the wave statistics The calculation is repeated at the end of the first minute every 10 seconds default so that a gliding average emerges This interval SWHMovinglInterval
23. executed program in the process Examples of such threads are the communication with water level gauges querying of a storm flood event through the web and storing the recorded data The automatic conditions for a storm flood are tested every five seconds the graphic is updated once persecond The web page forthe storm flood waming is tested once in a minute The log files of the waterlevel stations are updated every 10 seconds The different events are announced by LED graphics 17 LOG alevel User Manual 55 GUI The main window showsthe windows of the water level stations under each other in the order in which they are indicated in the LOG aLevelini file 5 5 1 Storm Hood Recording Triggers the recording of a storm flood independently of whether one of the automatic conditions is fulfilled Forfurther details see Storm Flood Recording Stops the output of the registered data into the log files until they are set free again in doing so no data are lost A dialog appearsthat enablesto resume the storage The user can save data view them and select a new log file while the storing is locked until that statusisoverriden 5 5 2 File Rush And Hold The cument reception buffer is cleared into its log files and the storing is stopped The data are however further collected in the intemal buffer so that no data are lost Flush And Hold is meaningful when a log file is deleted copied or opened while LOG a
24. ference measurement This is necessary to account for variable atmospheric conditions affecting the sound velocity By doing so the highest accuracy is guaranteed LOG aLevel is equipped with a reference sensor REF 300 which has a extreme high accuracy The reference sensor emits sound along a path with the maximum possible length through the same medium asthe measurement path onto a fixed target at a defined distance The highly precise reference sensor including the reference distance see Figure 4 should be mounted horizontally below the supporting arm nearby the LOG aLevel sensor It should be pointed out that the reference sensor hasto be protected from splashing water and no object can be between sensorand target in orderto avoid wrong data 13 LOG alevel User Manual Sensor Target 300 0 Figure 4 Reference sensor REF 300 mounted on a calibrated distance unit 14 LOG alevel User Manual 5 LOG alevel Software 5 1 Introduction LOG _aLevel Software allows the user to control one station or a network of LOG aLevel water gauge stations from the company A and to display and record their data online The water level gauges have different operation modes and can be equipped with additional sensors i e wind gauges LOG aLevel Software allowsthe operator to fully exploit the capabilities of the waterlevel gauges 52 Features e Online display of the water level data ofthe gaugesconnected e Adjus
25. for the station The Logfilename entry is important You must here enter a unique filename without path information l e Logfilename 2MYFILE LOG Each station has a separate logfilename The COMPort is the number of the serial port the station is connected to The COMParams entry containsthe port configuration parameters After having edited the LOG aLevelini fle store it in the same folder as the LOG aLevel exe file The application should now have been properly configured and ready for starting After having started the application the first time you should change the working directory in the menu File Logfolder LOG aLevel File Tools View Window Help Log Folder 7 Storm Flood Recording y Ae Flush and Hold Nach einem Ordner durchsuchen 21 Em Select a destination Folder For logging Stations Continuously 5 9 DATENI D Stations Off AmrumbankWest C3 cp ca CJ EPSON EUMARSAND CJ NordseeOst fal Recycled Exit H E Ordner HH harbour 0000 Abbrechen Neuer ordner 2 54 ofoperation The communication with the water level gauges takes place using the ANS character set over the serial port of the PC LOG aLlevel Software supervises every station independently The serial ports and the data reception are set up foruse when starting the progra
26. ging none 8 Buffer size 5 0 Megabytes Y Axis Level Wave Statistics Fixed Level Range Max Amplitude on Level so m Min Level 5000 m Max Level Resolution shows all measured water levels with the respective effective sampling rate This refers only to the display The effective sampling rate is on the other hand a setting of the respective level station When this option is selected the Level Averaging is ignored Level Averaging is the period in seconds over which the readings is averaged This provides a smoothing of the presentation The averaging takes place only in the display and hasno influence on the captured data Buffer Size is the size of the data buffer of the level measurement in megabytes Each station has its own buffer When the buffer is full the oldest values are discarded 5 MB buffer size corespondsto about 18 hours of recording Fixed Range Level produces a fixed scaling of the display of the level values with Min Level and Max Level as the lower and upper limits When this option is not selected the scaling is set automatically Max Amplitude is the maximum displayed value of the Wave statistics In the register Logging the path where to store the files of the water level can be defined with Log Folder and the updating rate for saving data can be set with Log Saving Interval 22 LOG alevel User Manual 5 7 Settings of a level station E
27. he ASCII data stream from the controller continuously module LOG aLevel controller on a Compact Flash Card that works as Windows Dosdata medium in a PCMCIA sot In orderto remove the Compact Flash data medium please proceed asfollows Tum the LOG aLevel station off by pulling out the connector with the label 12V in at the module Power Supply 2 Pull the Compact Flash data medium out of the PCMCIA slot You can also pull the PCMCIA slot out of the data logger by pressing the black ejection button and then removing the data medium from the PCMCIA slot When the data logger is working its red LED blinks The power supply can however always be interrupted The Compact Flash data medium can now be installed on a PC under windows 2000 or better Windows XP with a standard card readerdevice IMPORTANT The file with the level data is ALWAYS called PEGELLOG and MUST ALWAYS be in the directory of the data medium It must be available on the data medium before the measuring campaign The data loggeris not able to create thisfile by itself In order to install the Compact Flash data medium again in LOG aLevel station proceed in reversed sequence as described above Insert the data medium which is prepared with the file PEG ELLOG it should be empty the PCMCIA slot insert also the PCMCIA slot if it was removed into the module Data Logger Remark An empty file PEGELLOG can be created with a text editor 3
28. is User Manual contains information and wamings which must be observed by the user under all circumstancesto ensure safe operation of the instrument The equipment may only be put into operation by authorised persons and only operated by trained personnel All users working with this equipment must read the User Manual priorto any operation e The user may only perform the repair and maintenance work described this manual Only the specified parts are to be used Servicing work may only be carried out by authorised service technicians from G A orits distributors e All instruments and additional devices used for this purpose must be properly earthed e The earth leads must not be interrupted at any point e The LOG aLevel water gauge station may only be operated within the specified temperature range of 20 to 70 C Otherwise measurement inaccuracies and instrument faults or defects may occur The temperature stability of connection cables must match the operating temperature of the measurement system The sensors are to be treated with care and are only to be screwed in hand tight otherwise there is a risk of damage e Avoid electrostatic discharges LOG alevel User Manual e The LOG aLevel water gauge station must not come into contact with liquids e Also take care that the equipment is always operated above the water level Protect the equipment against falling into water e Isolate all system devices from the m
29. m and remain active during its use 16 LOG alevel User Manual The application detects changes in waterlevel gauge settings after its new configuration has been reported In case that the user changes the water level gauge settings LOG aLevel Software sends a configuration command and the water level gauge sends back an answer with its configuration that should conform to the new parameters Only then LOG aLevel Software adoptsthe new settings from the water level gauge LOG aLevel Software computes a wave statistic the mean square deviation when the effective sampling rate of the waterlevel gauge isat its maximum No wave statistic is computed when the effective sampling rate decreases The measured values of the water level gauge are stored on the main memory in a ring buffer with adjustable size The number of values stored by the program can be considerably larger or smaller than the data presented The water level gauges are automatically set to a durable and so fast as possible sampling rate Thisoccurs after identifying a triggering condition fora storm flood through web monitoring and measuring of wind direction and magnitude After a predefined time the Storm Flood Recording Mode tums off automatically provided that none of the triggering conditions is met anymore LOG aLevel Software has an event controlled architecture whose events be triggered by timer threads and the user A thread is an independently
30. rand the base of the supporting arm of 1500 mm The area between the sensors and the waterto be measured must be free of any obstacle in a radius of at least 1 m Note that the blind range of the ULL sensor is 0 50 m 1 64 ft that meansthat objects closerto the sensor i e water are not detected LOG _alevel User Manual 4 E E i erm lt 50 0 2 T rA Sensor 50 0 mm 50 mm di E 8 50 _ Tw I id 0 0 M30 E N l The number of sensors provided SEN STIRS may vary Figure 2 Mounting of arm reference distance unit ULL sensor The arm must be tightly fixed to avoid vibrations Due to the low weight of the sensors is possible to use light materials asthose indicated in the dra wing IMPORTANT mount arm ata height such that the sensor s do not be flooded 10 LOG alevel User Manual 3 3 Mounting the housing The stainless steel housing containining the LOG aLevel controller and the other modules should be safely fixed to a robust supporting structure min a 50 mm tube or a 4 mm thick plate Figure 3 showsthe proper distribution of fixing screws The housing should be properly protected against water Special care must be taken to verify that the housing is alwaysin a good condition to avoid misfunction damage of short circuits IMPORTANT mount the housing in a flood secure height 3 4 Connecting the
31. s the station settings are fed with undefined parameters COMPort is the number of the serial Ports at which the level station is connected to the PC COMParams contains the parameters of the serial Port 6 Warranty statement 1 Warranty period G A GmbH as manufacturer will itself orthrough its authorised sales partners provide end users with waranty coverage on all G A products purchased asnew and unused fora period of 12 months from the date of sale 2 procedure Any part which has been conectly used and isfound to be defective asa result of manufacturing and or material faults within the above mentioned warranty period will either be repaired orreplaced with a new part by A after expert opinion has been sought Material and orlabourcosts arising asa result will not be charged All exchanged partsbecome property of G A 3 Conditions for labour rendered under warranty Instruments delivered must have been operated correctly unauthorised modifications or repairs must not have taken 4 No warranty claim exists in the following cases Partssubjectto normal wear Damage caused by incomect maintenance fitting and addition of non approved partsand devices aswell asunauthorised modification of components 31 LOG alevel User Manual Damage caused by electrolysis Damage caused by fire oraccident incorrect usage misuse or negligence Damage rust corosion caused by the entry of water 5 Explicit or taci
32. s cables to the contoller eene 11 3 5 Connecting the data cable to the contrnoller nere 11 3 6 Installing the buffer battery 11 3 7 Testing the functioning locally 1 essersi esee 11 3 8 Install extemal sensors if provided Leere ener nera 12 4 1 SensorcharacterisliC S 1eeeeeeee eene erra a aaa nana Ru RR RR RR RR R RR S SSESRRRRRRRRRSRSREERRRRRRRRRRSESEKNAA 13 5 LOG ALEVEL LD 5 1 Introduction eeeecor eren na nu uuuu nua ua 15 R LOG alevel User Manual o 15 Lx 1119 15 5 4 sa IE 44 RR gu aas 16 5 5 cit mmE 18 5 5 1 Fie Storm Flood 18 55 2 Fl sn Amd 18 5 5 3 LOG Folder err menter reprehe tre rh 18 5 5 4 All Continuously center nennen ntn etr kn
33. sensors cables to the controller Once the steps above have been carried out proceed to connect the sensors cables between the sensors and the controller Connect the cables to the REF and ULL sensors carefully to avoid any possible short circuit Screw the cable fittings so that they are watertight Fixed the cablesto the supporting arm reference distance unit housing and other structures using propertie wraps Passthe cables through the orifices at the bottom of the housing 3 5 Connecting the data cable to the controller Connect the data cable to the controller through the RS 232 port Altematively use the port RS 485 reach up to 1 Km 3 6 Installing the buffer battery Put the battery in the bottom area of the housing Connect first the positive pole and then the earth pole 3 7 Testing the functioning locally The functionality of the LOG water gauge station can be locally tested connecting a laptop directly to the serial port of the LOG aLevel controller See the Quick installation Guide and Chapter 5 for information on how to install the hardware and software 11 LOG alevel User Manual Perforations for cabling M12 and M16 30 00 Bottom view Screw threads M10 at the rear of housing 300 00 250 00 175 00 125 00 50 00 dy M10 M10 M8 8 Tue M8 8 M10 M10 Rear view Figure 3 Mounting of housing 3 8 Install extemal sensors if provided
34. surement 22 System components A complete LOG aLevel water gauge station consists of standard and optional components 2 2 1 Standard components LOG alevel User Manual The following standard components make up the core ofthe LOG aLevel water gauge station Component Supplied LOG aLevel Controller Always 12 V Power Supply Always Ultrasonic level sensor Always Reference distance unit Always LOG aLevel Software Always Lockable stainless steel housing and key Always 1 shielded cable between the sensor and the LOG alevel Controller 4 pin LEMO plug M12 industry standard 1 cable between the REF sensor and the LOG Controller 3 pin LEMO plug M12 industry standard 2 22 Optional components Additional optional components which could be included Optional Power supply module solar wind 230V Data storage module Buffer battery UPS Communication module radio GPRS Extemal sensors See Figure 1 fora scheme of a LOG_aLevel water gauge station GENERAL YAcouSTICS LOG alevel User Manual REF distance unit Am Ext Power Supply Option Communication module Option Data LOG alevele Power logger Controller Supply Option AC Battery Fixed reference level at sensor front Option Housing Figure 1 Scheme of LOG aLevel water gauge station 2 3 Description of standard components 2 3 1 Housing
35. t guarantees These guarantees confer special rights to you and you may also have other rights which differ from country to country or from province to province Where these guarantee claims apply all other explicit or tacit guarantees provided by G A automatically lose their validity incl all market access guarantees or guarantees of fitness for every specific purpose Conversely the guarantees thus arising are limited to the period of this warranty Neither sales partners nortraders are authorised to make any other assurances representation of facts or wa manty offers than those contained in the warranty conditions 32 LOG alevel User Manual 7 CEconformity statement The instrument conforms to the requirements of the EEC directive 89 336 EWG and the revisions through 92 31 EWG and 93 68 EWG Article 5 pertaining to Electromagnetic Compatibility as well as 73 23 EWG and the revisions through 93 68 EWG Article 13 pertaining to Safety 33 LOG alevel User Manual 8 Technical specifications General Instrument model LOG aLevele Features T 500x500x200 mm 300 300 200 mm stainless steel with lock sea ousin water resistant IP class up to 69 flood secure 50 mm diameter 1 50 m long seawater resistant pole anodised Mounting aluminium or stainless steel with base plate Specifications Measuring range up to 10 m 20 ft wider ranges on request Sampling rates from 5 H
36. teps for properly mounting and starting up the LOG aLlevel water gauge station provided Step Description 1 Fix the reference distance unit to the supporting am or back of the housing of the Mobile version of LOG aLevel Mount the supporting arm Mount the housing Connectthe sensorscablesto the controller Connectthe data cable to the controller Install the buffer battery Test locally the functioning of the LOG aLevel water gauge station ol N OU A W N Install extemal sensors if provided 3 1 Fixing the reference distance unit Waming The reference distance unit is calibrated with high accuracy The sligthest deviation may cause a reduced accuracy of the measurements See Figure 2 DETAIL A for information indicating how to fix the reference distance unit to the supporting arm Be careful not to alter the length of the reference distance unit provided The reference distance should be fixed to the supporting arm to its bottom side as indicated in the drawing so that it is protected from direct heavy rain and intense sunshine It is also important to be sure that there is no obstacle between the REF sensor and the target i e a cable 3 2 Mounting the supporting arm Figure 2 shows a drawing indicating how to mount the arm reference distance and sensor To avoid interference from objects in the reflected sound wavesis recommended to keep a minimum distance between the ULL senso
37. tion 5 Important is the correct termination of the line with CR LF The Triggered mode is presently not supported 5 13 6 SFSting With the ST String Set Time the real time clock of the stations can be set for those which do not count with satellite time Example ST 15 03 2006 17 22 15 321 C R gt lt LF gt 5 13 7 GP String with GP CR 4F Get parameters the delivery of a header can be requested Each program that communicates with the LOG_aLevel water gauge stations should send this command at the beginning in orderto get acquainted with the current setting of the station Especially the reference value can be known to avoid altering it in a change of the parameter set 27 LOG alevel User Manual 5 14 Storm flood recording An important function of LOG_aLevel Software is the recording of levels during a storm flood The recording phase differs from the standard operation in the fact that the level stations are implicitly configured to the highest sampling rate and to continuous operation The recording takes place in the same files as during the regular operation The storm flood recording Storm Flood Recording Mode can be triggered by one of the following events reaching certain wind conditions tom flood waming overthe intemet manual triggering by the operator In each of these cases the recording takes places on the same way it means that it is not important how the recording wastriggered
38. tment of different operation modes the water level gauges e Continuous storing of the received data in text files e Eventtriggered ormanualactivating of recording during a stom flood e Monitoring of a wind gauge and a web site for automatic triggering of the recording of a storm flood event e Display of wave statistics e Uninterupted operation during several months 5 3 Installation Requirements e PC with Windows 2000 or Windows XP installed e 100MBoffree disk space e One available serial port foreach connected LOG_aLevel water gauge station Run the file Install exe on the CD to install LOG_aLevel Software Once you have installed the application you can configure it to meet the special requirements of your hardware equipment The configuration is described in the LOG aLevel ini file which is read once at program start Open this file with notepad or any other text editor You find the most important entries in the documentation of LOG_aLevel This is only a brief overwiew In most cases the configuration file isalready properly prepared 15 GENERAL yacousTics LOG alevel User Manual For each station a separate section StationN has to be edited The counting begins at N StationO You can enter more station sections than required the sections above N 1 are ignored The Class entry describes the type of station Class Station and Class WindStation are currently supported Caption lets you specify any name
39. z up to 1 value day Resolution 1 m 0 003 ft Accuracy 1 cm 0 033 ft Data output Options RS 232 RS485 optional Backup battery maintenance free lead gel battery 12 V 7 5 Ah up to 200 Ah if required Data transmission RS 485 radio telephone modem GPR GSM Ethemet Ranging from remote on off over status monitoring up to a complete remote control with data transmission over a transparent line and data server www Further sensors wind gauge acoustical or mechanical other sensors on request Time high accuracy GPS date and time pps 1 msaccuracy Power supply wind generators 25 W up to 75 W 20 knots wind speed Solar panel 41 Wp up to 180 Wp if required seawater resistant with high efficiency MPP charge regulator Data acquisition low power data logger with non volatile memory PCMCIA card up to 2GB 34 GENERAL YAcousTics LOG aLevel User Manual 9 Data Logger Data Logger LOG User Manual 9 2007 GENERAL ACOUSTICS LOG alevel User Manual Data logger The data loggerstoresthe measured data up to 2 GB on the card supplied The standard card hasa sze of 1GB Example In continuous mode at 5 Hz sample rate a size of dat of about 1 MB perday is created This means per 6 months 600 MB data will be created Exchange ofthe data medium in the data logger The data logger module Data Logger storest
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