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Nortek Aquadopp Current Profiler Manual

1. Replacing the Desiccant Keep water out of the open pressure case Both fresh and salt water can corrode the circuitry At least once a year replace the desiccant located behind the internal battery Refer to the battery installation procedure for detailed information Installing Changing Batteries Alkaline batteries should be degaussed before you use them in your instru ments you can do this yourself by placing the padded end of the battery up against the centre of your PC monitor CRTS not LCD screens and using the monitor s degaussing function Always be sure to include desiccant in the pressure case Humid air can con dense enough water to damage the electrical circuitry To replace the battery pack 1 Remove the four screws 1 and washers holding the end cap to the pressure case and remove the pressure case Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 81 2 Disconnect the 2 pin connector 2 and pull the old battery 3 out of the pres sure case 3 Slide in a new battery and connect it to the 2 p n connector 4 Insert the end cap to the pressure case and mount the four screws and wash ers Tighten the screws carefully to avoid damaging the threads in the pres sure case Tighten the screws only until the end cap touches the pressure case and you can just feel that they are seated Keep in mind that ocean pressure holds the end cap n tightly all the screws
2. 30 CHAPTER 5 Preparing the Instrumentation Setting up the serial communication Untitled 1 a H File Communication Deployment view Configuration Ondine Help Serial Port Communication Serial part E Baud rate Recorder U parade baud rate 38400 Hard break 3 Accept the default baud rate settings 9600 baud which is also the default instrument baud rate 4 Check the instrument communication and verify that the instrument is alive by activating the Terminal Emulator window and press the Send Break button to send a BREAK signal over the serial port The terminal emulator p Untikled 1 Ans ie RT File Communication Deploy PIPER Clear All Command file Command MM 1 Send A break causes the instrument to report an identification string see also side bar discussing the Break command unless it is in Data acquisition mode when the break 1s received In the latter case the instrument will respond with 7 Confirm Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 31 A few words on the Break command The Break is used to interrupt the instruments regardless of what mode they are in It is frequently used in the communication with the instrument Traditionally sending a break was done by holding the transmit line high on the serial line for a period of 500 ms This is what we refer to as hard break This works fine if you have a
3. AQUADOPP CURRENT PROFILER 55 User Guide CHAPTER 7 Real Time Applications Autonomous deployments are by far the most common Aquadopp Profiler ap plication However you may just as well use it in real time applications Such applications may of course be part of permanent or semi permanent environ mental monitoring systems but from time to time you may want to set up a real time system to test your application before you actually deploy the instrument This chapter outlines the real time features of the AquaPro program We recommend users with real time application requirements to check www nortek no regularly for new advances 1n our range of online software programs Online Solutions For cables not longer than 50m RS 232 communication at 9600 baud will nor mally work fine If you want to run a longer cable you can switch to RS 422 by installing a different wiring harness which can be obtained from Nortek You can also try using RS 232 with longer cables by reducing the baud rate Keep in mind that RS 422 is a more reliable means of communication than RS 232 changing environmental conditions could cause RS 232 communications to fail over a long wire without apparent reason You should consider the voltage drop across the cable particularly 1f you use the two highest power settings see Deployment planning in Chapter 6 Operation for details on this Design your power supply and cable so that the voltage stays be
4. Sound does not reflect from the water itself but rather from particles suspended in the water These particles are typically zoo plankton or suspended sediment Long experience with Doppler current sensors tells us that the small particles the Aquadopp Profiler sees move on average at the same speed as the water the velocity it measures is the velocity of the water Doc No N3009 103 Revision C 01 2008 22 CHAPTER 4 Functional Description Doppler Beams Doppler current sensors use large transducers relative to the wavelength of the sound to obtain narrow acoustic beams For example the 2MHz Aquadopp Profiler has a beam width of 1 7 Narrow beams are essential for obtaining good data Each beam measures velocity parallel to the beam and does not sense the veloc ity perpendicular to the beam at all The Aquadopp Profiler senses the full 3D velocity with three beams all pointing in different directions If you assume the flow is uniform across the three beams simple trigonometry is sufficient to compute the velocity in any direction The Aquadopp Profiler will still provide a good measurement in a non uniform flow if the horizontal variations are linear The measurement cell is shaped like a triangle as indicated in the Fig on the previous page The maximum extent of the weighting function is twice the length of the transmit pulse Coordinate Systems The Aquadopp Profiler measures velocity components parallel to
5. 51 You should note that when using an external sensor you will need to make your own calculations for power requirements and battery life The Aquapro software is not able to do this when calculating battery utilization The input section of the Aquadopp s analogue input looks like this 5VSEN ANALOG_IN_1 2 To protect the Aquadopp circuitry against external sensors providing an output voltage in excess of 5 0V there is a clamping diode on the input with a current limiting resistor in series The diode will conduct at voltages above approxi mately 5 3V To achieve stable conditions during testing the SV SEN net can be powered up from command mode by sending the hex command 435001C4 from the terminal emulator Doc No N3009 103 Revision C 01 2008 CHAPTER 6 Operation Starting a recorder deployment Starting Recorder Deployment Before you start a deployment either define a new deployment configuration deployment planning or load a saved configuration from memory Then click Deployment gt Start Recorder Deployment and enter a short deployment name of no more than 6 characters which will be used for the internal data file The program allows you to set the Aquadopp Profiler s internal clock see below and then gives you a final review on the instrument setup just before you start it up We urge you to verify that the battery level and available memory match your deployment setup
6. 600 kHz 0 120 117 Zan amp 2MHz 400 kHz All dimensions are in mm unless indicated otherwise Doc No N3009 103 Revision C 01 2008 14 CHAPTER 2 Technical Specifications Dimensions Weight in air 2 4kg 2 6kg 0 6MHz 3 7kg 0 4 MHZ with alkaline batteries Length See drawing on previous page Diameter See drawing on previous page Materials Standard Delrin and polyurethane plastics with titanium screws Connectors Bulkhead Impulse MCBH 8 FS Cable PMCIL 8 MP on 10 m polyurethane cable Environmental Operating temperature 5 C to 35 C Storage temperature 20 C to 45 C Shock and vibration IEC 721 3 2 Shallow water rating 300 m This applies to all parts except the pressure sensor The pressure sensor can withstand a max depth of 1 5 times its rating Depend ing on the pressure sensor ordered this may be the limiting factor determining the maximum deployment depth permitted Options Batteries Lithium Li Io rechargeable External batteries 200 Wh 540 Wh or 1080 Wh alkaline Bulkhead connectors Titanium instead of bronze Transducer head Right angle head for 1 or 2M Hz Special configurations available on request Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 15 CHAPTER 3 Above The 1MHz and the 2MHz profilers are available with the two leftmost head configurations while the 600 k
7. Revision C 01 2008 CHAPTER 7 58 Real Time Applications The current tab provides a tabulation of the measured current profiles per cell and the measured amplitudes Untitled 1 AquaPro Ble Communication Deployment Ven Configuration Orine Heb SECHS Te aos a ee ny e a a H 0 004 153 110 111 mau 1 4 0011 0 064 2 4 0 000 0 034 0 004 97 95 108 3 4 0 015 0 033 0 007 120 94 195 4 4 0 080 0 109 0 010 128 137 105 5 4 0 065 0 062 0034 93 31 e 6 4 0 0 W WE 7A 0 0 25 0 00 a D 0 004 A LE 0 059 In ER 0 0244 WR e 0 034 WD Cell No 084 Ku 0 0 0 027 0 020 0 022 0 011 m a mi NY The thre velocity components shown in the coordinate system used 81 95 143 79 Tr 140 151 79 33 E d 48 45 184 15 4 U E 70 Distance m from the Aquadopp along the beam The amplituues in counts for the three beams indicate the signal strength The sensors tab provides information about the sensor and the reading of the analogue inputs The Sensors tab provides information about the sensor and the reading of the analogue inputs Date amp time of day when the measure ment viewed was started Untitled 1 AquaPro t Date amp Time Measured temperature Temperature Sound speed Sound speed as used in the measurement The detected pressure Battery Battery voltage hon Deployment ew Configuration Onine Help Lo E SE i
8. Sai en AS QUADOPP CURRENT PROFILER Ei E a e E e d M Ki l n A r dr w d USER GUIDE JANUARY 2008 QUADOPP CURRENT PROFILER Copyright Nortek AS 2008 September 2005 All rights reserved This document may not in whole or in part be copied photocopied translated converted or reduced to any electronic medium or machine readable form without prior consent in writing from Nortek AS Every effort has been made to ensure the accuracy of this manual However Nortek AS makes no warranties with respect to this documentation and disclaims any implied warranties of merchantability and fitness for a particular purpose Nortek shall not be liable for any errors or for incidental or consequential damages in connection with the furnishing performance or use of this manual or the examples herein Nortek AS reserves the right to amend any of the information given in this manual in order to take account of new developments Microsoft ActiveX Windows Windows NT Win32 are either registered trademarks or trademarks of Microsoft Corporation in the United States and or other countries Other product names logos designs titles words or phrases mentioned within this publication may be trademarks servicemarks or tradenames of Nortek AS or other entities and may be registered in certain jurisdictions including internationally Nortek AS Vangkroken 2 NO 1351 RUD Norway Tel 4767174500 Fax 4767136770
9. Signal levels in counts as detected at the analogue inputs N A Not Applicable aal 7 i Pitch Roll Heading Analog inputi Analog Input2 Pitch roll and heading ofthe Aquadopp The status tab provides information on the path to the disk file and its size Any errors occurring will be indicated here Doc No N3009 103 Revision C 01 2008 The Status tab provides information on the disk file location and its size The System tab provides information about the system itself Died 2d pow 3 rapp ed 1 out AQUADOPP CURRENT PROFILER User Guide 59 Date amp time of day when the mea surement viewed Was started Untitled 1 AquaPro Eile Communication Deployment View Configuration On line Help 8 A i fa ar System Disk file shows xis 2005 10 29 12 56 01 00 the name of the Psal File size WE disk file in use for JE 7 data recording OFF is displayed when no data are stored to the computer disk during an online measurement Error and status codes see text for details Current size of the file being recorded onto the computer s hard disk Error codes Bit7 Bit6 Bit5 Bit4 Bit 3 Bit 2 Bit 1 Bit 0 Not Not Not Flash Tagbit Sensor Measurement used used used data data 0 OK 0 0K Desk 0 OK 0 OK 1 Error 1 Error 1 Error Sa GC E JAN di d a4 4 L Ce D di Compass Status codes Bit 3 Bit 2 eu i Power level Tr pm Roll Pitch eie us
10. gt 00 0 high 00 p e 0 0K OF OK 0 mm s Bi EET ut ees 10 2 ces Ze EN Ora Ver range Lu e oi E e 5 Siow EN Date amp time of day when the mea surement viewed Was started Untitled 1 AquaPro Eile Communication Deployment View Configuration On line Help HSH szuiin SD BPBERG Current Sensors Status System Disk file shows mies 0000700700 00 00 00 00 the name of the Probe number disk file in use for MA data recording F OFF is displayed when no data xs arestoredtothe computer disk _ E Errorand fatus codes Curent size of the file bei during an online A n Es CT be A cA measurement _ Doc No N3009 103 Revision C 01 2008 60 CHAPTER 7 Real Time Applications Graphical View Setup Options The graphical tabs determine what to display n the lower part of the AWAC soft ware main screen By right clicking the mouse whilst positioned in the graph area you may customize the display Customizing the Display To be able to customize the graphical display Whilst positioned in the graph area right click the mouse A context sensi tive menu will now appear If you right click the mouse whilst in the graph area a RN context sensitive menu will appear 0 000 0 000 D oon 0 000 0 000 D oon To change the time scale In the context sensitive menu click the Scaling or Scale Data The exact name and appearance of this submenu depe
11. Analogue inputs Number of channels 2 Voltage supply Battery voltage Hardware can be modified to provide 5 V or 12V Voltage input 0 5 V Resolution 16 bit A D Serial data communication I O RS232 RS422 Software supports most commercially available USB RS 232 converters Baud rate 300 115200 user setting Internal recording Capacity 9MB expandable to 33 89 or 161MB Data record 32 bytes 9XN Mode Stop when full default or wrap mode Software AquaPro Operating system Windows 2000 Windows XP Functions Deployment planning data retrieval ASCII conversion online data collection and graphical display Power DC Input 9 16 VDC Max average consumption at 1Hz 0 2 1 5 W Sleep consumption 0 0013 W Transmit power 0 3 20 W 4 adjustable levels Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER 13 User Guide Internal batteries Type capacity 18 AA Alkaline cells 50Wh New battery voltage 13 5 VDC Duration 10 minute avg 80 days for 2 MHz 0 5 m cells Duration 10 minute avg 50 days for 1 MHz 1 0m cells Duration 10 minute avg 40 days for 600 kHz 2 0m cells Duration 10 minute avg 20 days for 400 kHz 2 5 m cells Exact battery consumption and velocity uncertainty are complex functions of the deployment configuration Please consult the AquaPro software for more exact predictions 25 amp 2MHz lt gt sensor port
12. Set Pressure Offset and key in the depth in m If you want to introduce an offset to e g use a common reference for your entire instru mentation on a deployment site Note that the pressure sensor will not output negative values and we recommend that you give the pressure sensor a posi tive offset The dialogue box for setting the pressure offset see text for Ee more Observe that atmospheric changes can vary the depth Place instrument in water and enter the depth reading as much as 0 3 m B edd Please be aware that all data on the recorder will be erased when calibrating the pressure Calibrating the Compass The compass calibration is designed to adjust for magnetic materials that may be present in your deployment frame or mooring structure As a consequence cali bration of the compass should take place after the Aquadopp Profiler has been mounted in its frame or mooring Be sure to mount all other equipment and ma terials that 1s to be attached to the frame or mooring and conduct the procedure outdoors away from other possible magnetic elements Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 37 To calibrate the compass do as follows 1 Assemble the frame or mooring structure completely with Aquadopp Profiler mounted be sure to include any external battery canisters if applicable and the extra ballast needed to create a stable structure Connect the Aquadopp pr
13. The software creates a log file using your deployment name with the setup pa rameters You should keep this file in your records Use a delayed startup either to make sure the Aquadopp Profiler starts data col lection on the hour or to conserve batteries for a deployment that starts some time in the future You can start an Aquadopp Profiler deployment well in ad vance of when you plan to install it on site and use a delayed startup to conserve the Aquadopp Profiler s battery and recording resources for the actual deploy ment Start Deployment x Deployment test Current time 2002 02 12 13 40 50 art at 2002 02 12 13 40 00 Deployment aa 1202202 am e C Start Now Cancel Name max 6 char s s Comments max 180 char s Setting the Instrument s Real Time Clock The software allows you to set the Aquadopp Profiler time of day and a delayed startup time when you start the deployment see above The easiest way to set the Aquadopp Profiler time is to use the PC time setting We recommend you to make sure the PC time 1s set correctly before you start the deployment An important reason to set the correct time may be to synchronize a group of Aquadopps with one another or with other sensors The real time clock of the Aquadopp Profiler has an accuracy of approximately 20 seconds per year which is far better than a typical PC clock If you want to take advantage of the Aquadopp Profiler clock to keep data from s
14. and hence more battery used to calculate the performance Frequency Choose 600 kHz power spent To see the parameters and hence the total 1 MHz or 2MHz depending the consequence watch the effect battery utilization recorder memory frequency of your instrument on battery utilization requirements and velocity precision expressed as the standard deviation of the noise This is the Standard tab DM ui es Standar 4 Advancen Instrument Mounting m Deployment planning Profile interval is the time Frequency 2 MHz C Moving buo Assumed duration days 30 between each Mooring ine fe Fi Battery utilization 7 measurement i e Fusce ue of BO Whi 40 Default com the data output Memory required M 0 3 pass update Current profile 4 r Environment rate Vertical vel prec cm s 0 7 rate and power Ce Profile interval s f EE E Horizont vel prec cm s EIN level to be C River used unless Number of cells 20 Number of cells gt EEE C Deep water gt 300 m you choose is the number of Lise iE Pa to activate the current measuring Leg Compass update rate s 600 advanced set cells along each Use Advanced Settings Power level HIGH tings beam K Cancel Apply Help b Cell size is the Deem length of each cell along the beams Environment Choose the setting Tos uode that best fits your deployment The v
15. has also been left out Theoretically there can be up to 128 cells per beam but in real applications this will be limited by the range of the beams and the highest resolution i e smallest cell size permissible The blanking is the time during which no measurement takes place essentially to give the transducers time to settle after having emitted a pulse the transducers are used as both transmitters and receivers Measurement cells are shown non overlapping for clarity Blanking of this design is to protect the system from stopping after an accidental break To bring the acquisition to a halt you will need to confirm the break People using the Aquadopp Profiler with an external data logger or similar devices may want to know that if the measurement has been started using the low level command AD in lieu of ST a confirmation will not be needed to halt the system after a break This and other features of the low level command control system is described in the Paradopp Interface manual which is available separately contact the factory for details Power down mode The Power down mode saves power during deployments and prevents your battery from dissipating between deployments The Aqu adopp Profiler automatically powers down from Command mode after about five minutes of inactivity To conserve your battery when the Aquadopp Profiler is on the shelf be sure it is not in Data acquisition mode Stop data col
16. 05 2005 09 25 52 To time 30 05 2005 09 56 47 r Data files Options Iv Header Disgnastice Include velocity time Iv Velocity Range Profile interpolation M Amplitude M Wave Iw Sensors F MT Doc No N3009 103 Revision C 01 2008 72 CHAPTER 8 Getting the Recorded Data out The contents of a converted file is shown in Notepad on a Windows 2000 system Tip To conserve the batteries when the Aquadopp is not to be used for a period of time be sure it is not in data acquisition mode 7 To view the contents of a converted file select what part or type you would like to inspect Data Conversion Files ta convert Converted files Start time Start time Checks Exampl l prf 30 05 2005 09 2 30052005055 219 Exampl01 30 05 2005 09 2 30 05 2005 09 5 0 Em Add file Remove Select All Iv Checksum control Burst files Aa Show pathnames Add postfix This will start Notepad unless your PC is configured otherwise and show the contents of the selected file amp j deploy01vi txt Notepad File Edit Format Help Finish Operations Be sure to stop any data recording using one of the Stop buttons before you put the Aquadopp on the shelf or in the back of your car after use Erasing Recorded Data Erase the recorder by clicking Deployment gt Erase Recorder Before you do this make sure that you have recovered your data that the data file has not been corrupted and
17. Maintenance anne ae ann ale 79 cuiu fREOA OO 79 TO 79 Re place ine TR Ulo edes dicione tchat Motu oerte RESI UU NU FERME EAT 80 Installing Changping Ballet ee 80 Correciiye Maintenahte ee EET UU abi eruta ids Sl Returning Aquadopp for Renate 83 Doc No N3009 103 Revision C 01 2008 7 8 Contents Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide CHAPTER 1 The Aquadopp profiler is available with a variety of head configurations Aquadopp is a registered trademark of Nortek AS Introduction Thank you for purchasing a Nortek Aquadopp Profiler The Aquadopp Profiler has been designed to give you many years of safe reliable service The Aquadopp Profiler measures the current profile in water using acoustic Doppler technology It is designed for stationary applications and can be deployed on the bottom on a mooring rig on a buoy or on any other fixed structure It is a complete instrument and includes all the parts required for a self contained deployment with data stored to an internal data logger Typical applications include coastal studies online monitoring and scientific studies in rivers lakes and channels The Aquadopp Profiler uses three acoustic beams slanted at 25 to accurately measure the current profile in a user selectable number of cells The internal tilt and compass sensors tell the current direction and the high resolu
18. Revision C 01 2008 45 di CHAPTER 6 Operation Producing the Deployment Planning menu The Deployment planning pane shows the consequences of your setup choices in terms of battery utilization memory requirements and velocity precision 9 Set Aquadopp time to PC time 10 If appropriate set a delayed start up time 11 Disconnect cable and install dummy plug 12 Verify pinging with AM radio just prior to deployment 13 Install on site Ensure the acoustic beams point where you want and that they are not obstructed Deployment Planning On the main menu select Planning from the Deployment pull down menu or press the Deployment Planning toolbar button to activate the planning dialogue box The Planning submenu displays three options that may serve as a starting point for your deployment planning Untitled 1 AquaPro File Communication Deployment View Configuration On line Help Use Existing Load From File Load From Instrument Planning b Start Recorder Deployment Stop Recorder Deployment View Log Recorder Data Retrieval Data Conversion Erase Recorder e Select Use Existing to start with the previous settings This selection corresponds to the Deployment Planning toolbar button e Select Load From File to read settings from a deployment dep file e Select Load From Instrument to read settings from the instrument The Deployment planning menu contains al
19. Use Advanced and go to the Advanced tab 3 Define which analogue input 1 2 or both to use PROFILE is used to sam ple data at the same rate as profile measurements are started while WAVE samples every time a wave burst measurement is started The PROFILE amp WAVE is used to sample data every time a profile or a wave burst measure ment is started Only one of the inputs can be set to sample while wave measurements are made A warning will appear if you attempt to set them both to wave related sampling 4 Check the Output power box The data from the external sensor will not be affected by the Aquadopp Pro filer data quality For example the external sensor s data will be totally unaf fected even if the Aquadopp Profiler is out of water and thus measuring noise only No powering of the external sensor will take place when the Aquadopp Pro filer is in sleep mode This helps reducing the system s power consumption significantly Consequently any external sensor used must be capable of automatically re suming its duties once the power comes back and they must do this within l sec after power up in order to provide correct data for the first sample Our efforts to reduce the system s power consumption includes a non con stant sampling of the external sensor Doc No N3009 103 Revision C 01 2008 The Aquadopps analogue input circuitry see text for details on functionality AQUADOPP CURRENT PROFILER User Guide
20. XP wy E Ka i O as igi Ans RS AH g a OM E d s LES e m T i er ur E AQUADOPP CURRENT PROFILER User Guide The AquaPro Pull down Menus The File menu lets you create new deployments open existing ones as well as saving files This menu also lets you print out your graphs and tables as well giving you shortcut access to recently used files The Communication menu is used to set up the serial communication and to start the Terminal Emulator The Deployment menu lets you define a deployment regime start and stop recorder deployment view a log on what s been taking place retrieve recorded data convert the acquired data to ASCII format and erase the recorder contents The View menu lets you beef up the display to your liking The Configuration menu is used to upgrade the firmware to a more recent version and to upgrade the head configuration file whenever applicable The On line menu is used to start and stop data collection with or without the internal recorder as well as to define a file name for the recording to a remote computer s hard disk and to start that recording In addition this menu lets you set the clock the pressure offset and calibrate compass and temperature The Help menu provides access to Help topics as well as an on line version of this manual and program version information d Er mo es z d File Communication Deployment View
21. changes Analogue inputs The instru ment can read two analogue inputs at the same time The inputs are typically used to con nect a CT sensor to the system You may specify when the sampling of the external sensor shall take place during wave measurements during profile measurements or during both Wave bursts Must be checked to collect veloc ity and pres sure data for wave spectra computations See text for more on this Click Apply to put changes into ef fect without leav ing the menu Click Help to start the context sensi tive Help system Refresh settings to reflect set tings made in the Standard tab Doc No N3009 103 Revision C 01 2008 The Aquadopp Profiler measures profile and waves sequentially In case of conflict wave measure ments have priority over profile measurements The ASCII conversion software can interpolate the missing pro file AQUADOPP CURRENT PROFILER User Guide Use the Open Save commands in the File menu or the corresponding toolbar buttons to save the deployment parameters as a file at any given time You may then reload it when it is time to actually deploy the instrument Wave Bursts When collecting velocity and pressure data for wave spectra computations ob serve that the instrument will not do profiling and wave burst measurements at the same time and that wave measurements
22. direct connection between your PC and the instrument But once you use something else for example amodem you may get into trouble The problem is that different types of modems handle hard breaks in their own way Certain GSM modems will for example accept a 500 ms hard break on the input but they will only output a 100 ms hard break which will may not be accepted as a break in the instrument To cope with problems like these our instruments therefore offer soft break as default The soft break consists entirely of characters so it can be used with any device capable of RS232 or RS422 communication With two types of break and one version of the communication software you will get communication problems if the software is set up with the wrong type of break The easiest way to circumvent this problem is to use the auto detection feature in the software Make sure you have chosen the correct serial port and press the Stop Data Collection button on the toolbar The software will then find the correct communication baud rate and break type for you and expect the MC command to accept the break and suspend its ongoing activi ties When on the other hand this is done from the AquaPro software the nstru ment will prompt you to confirm your intention of suspending its activities Close the terminal emulator upon successful communication If unsuccessful check battery cabling and COM port 5 Check the noise level of the instrument b
23. have to do is to keep the end cap from falling out when the system is above water Take care when handling the O ring and the O ring surfaces 5 Test communication with the Aquadopp s built in terminal emulator program by sending a break command to the instrument If it is wired correctly then you should see the Aquadopp s wake up message on the screen it will give you the model of your instrument plus the firmware version number If you get a string of garbage characters try another baud rate setting When the instrument responds to a break properly then the communication lines are correctly connected An easy alternative for using the terminal emulator is to read the configuration file directly from the instrument Deployment gt Plan ning gt Load from instrument If the instrument is set for a different baud rate than the software expects it will search for the correct baud rate and connect automatically 6 Test the instrument by collecting data without using an external power source to ensure that the battery is properly connected Make sure to stop data collec tion so that the instrument will power down after you are through testing it 7 Check and or reset the clock if necessary 8 Because the battery pack uses standard alkaline batteries you do not normal ly need to observe any special precautions when you dispose of old batteries If you have lithium batteries keep in mind that you must be very careful and th
24. selected file will now be retrieved and put on your hard drive Converting to ASCII Format To convert the retrieved data into ASCII format 1 Click Deployment gt Data Conversion or click the corresponding icon Data Conversion Files to convert Converted files Start tine Stop tine Start time Stop time Kae Add file Remove Select All Iv Checksum control Save in folder Burst files Add prefix Show pathnames Add pastfis SE The following options are available Files to convert Lists files that may be selected for conversion To convert files select items in the list and press the blue arrow e Converted files Lists converted files Add file Displays a file selection dialog box where you can select files to add to the Files to convert list Doc No N3009 103 Revision C 01 2008 u Doc No N3009 103 Revision C 01 2008 CHAPTER 8 Getting the Recorded Data out Remove Removes the selected files from the list Select All Selects all files n the Files to convert l st Checksum control Performs checksum control during data conversion Burst files Splits data collected n burst mode into separate files The files will have a sequence number appended to their names Show path names Shows files with full path names in file lists Add prefix Specify text to be inserted in front of the recorder file name for the converted files Add postfix Specify text to be app
25. that you have stored a backup copy Doc No N3009 103 Revision C 01 2008 Tip Use our web site http Iwww nortek as com to get access to the latest tech notes and user experiences regarding i a data analysis AQUADOPP CURRENT PROFILER 73 User Guide Binary Data Files Binary files created by the AquaPro program all use the same format whether internally recorded or recorded using the real time Record to Disk option Bi nary data files include a header 50 100 bytes long and each data record adds 32 bytes 9x Nops The binary file format is not documented here since it is all shown in the header file see example overleaf Doc No N3009 103 Revision C 01 2008 74 CHAPTER 8 Getting the Recorded Data out An example of parts of the header file showing that the data format is well documented in the header file itself This will ensure that no matter how many firmware upgrades you do you will always have access to the format used when the acquired data was downloaded Doc No N3009 103 Revision C 01 2008 Ei Sample hdr txt Notepad File Edit Format Help en ro IHMT Aor 2000522201 Velocity Cell 1 Beaml x East cm s J velocity Cell 2 Beaml x East cms J velocity cell n Beaml x East cm s J en ya zZ Velocity Cell 1 CBeam2 v Morth m s velocity Cell 2 Beam2 v Morth ms velocity cell n CBeam2 v Maorth ms dE s e velocity Cell 1 Beam z up ms velocity Cell 2 Beam3 z
26. up cms J m s XPrOjXParabpoppspeplayspara swaveprasrHMTsAprz nOs22201 Amplitude Cell 1 Beaml counts Amplitude cell 2 Beaml Ccournts 3 velocity cell n Beam3 z up Amplitude cell n Beaml counts 3 Pro Parabopp Deploy Dat a waveproy THM apr 200022201 Amplitude Cell 1 Beam counts Amplitude cell 2 Beam counts amplitude cell n Beam counts Proj Parabopp step loys Data waveproyIHMT apr 200022201 Amplitude Cell 1 Beams counts 3 Amplitude cell 2 Beam3 counts Amplitude cell n Beams counts Proj Parabopp pep loys Data waveproyIHMT apr 2000422201 Month 1 12 Day Year Hour Minute second Error code Status code Battery voltage Soundspeed Heading Pitch Roll Pressure Temperature Analog input 1 Analog input 2 1 31 0 23 0 59 0 59 v m s degrees deqrees degrees m degrees CJ AQUADOPP CURRENT PROFILER User Guide 75 CHAPTER 9 Operational Concerns My Data Fails to Look Right The Aquadopp Profiler cannot measure velocity properly if the water has too few scatterers Your data will be questionable when signal levels are down around the noise level which is about 20 30 counts for the 2 MHz version 25 35 counts for the 1 MHz and 30 40 counts for the 600 kHz version If your data doesn t look right particularly if you have unrealistic vertical veloci ties consider the possibility that one or more of the beams were bloc
27. 09 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide Note If data download is The standard baud rate is 9600 and we recommend that you use this baud rate interrupted the Aquadopp Profiler E A unless you have a good reason to change it setting other than the one used for normal communication When To change the baud rate and make it permanent do the following the software tries to establish communication in such cases it may spend a few moments searching for the current baud rate Start a deployment and then stop it The last step makes the new baud rate permanent If you remove power and reapply it the Aquadopp Profiler will re awake with the new baud rate 1 Set up the Aquadopp Profiler and connect it to your computer Doc No N3009 103 Revision C 01 2008 2 Set the baud rate in Communication gt Serial Port to the baud rate you prefer 41 42 CHAPTER 5 Preparing the Instrumentation Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide CHAPTER 6 Tip You can easily use a radio to check that the Aquadopp Profiler is running The Aquadopp Profiler transmits energy at 0 4 0 6 1 or 2MHz and an AM radio will pick up these signals or their harmonics Be sure to listen first with the Aquadopp Profiler on the bench to choose the best frequency and to learn to identify the Aquadopp s distinctive sounds If you would like to listen to examples g
28. 20dB step size is about data If hecked fth n data collecting mode ata IT UNCNECKE same of the EM Average interval 9 6dB Use high setting Standard tab data logging stops when the recorder is full per second Uncheck Auto to gain manual control of this is the time the in strument is actively measuring through the profile interval The instrument will be in sleep mode during the rest of the profile interval unless you are sure of high backscatter or only using short range and explained there Coordinate Em system Select This is the ENU XYZ or Advanced tab Beam See Battery utilization Chapter 4 for more Blanking distance INS on this is the distance from the sensor to the start of the first measurement cell Memory required MB i78 Vertical vel prec cm 10 7 Measured Speo 5 EAE en C E uni 1525 Input PROFILE z Compass update rate Compass read ing consumes energy It can be done every second but you may also set it to a longer interval Input 2 PROFILE amp wavE v Click OK to leave menu putting changes into ef fect Sound propagation speed Key in the salinity to have the speed calculated based on salinity and temperature or use a fixed sound speed Salinity is typically 35 in the ocean and 0 in fresh water Click Cancel to leave menu undo ing any
29. 6 The Deployment Planning MenuStandard Eben vn aene tete SER Eee bn eoe 47 The Deployment Planning Men Advanced ob 48 DECUIT m o E SRM 49 Use with other Ins et BL S as ccansdecudscccaremisosesonesssnntonssanasteeeisaaissexchdenthenanneanisandenacouoseaneanie 50 Starting Recorder Deployment iue sun ea nennen 22 Setting the Instrument s Real Time Clock eu ea 52 Stopping Recorder Deployment es 53 Real Time Applications pp 55 Jae Soo EE 55 Recording Data Internally as a ACU en E eee 56 Online Viewing of Acquired DaB uses 4 errereen eer 57 Graphical View Selly ODUOFPS une 60 Customizine fh Display E 60 5 61015 0 1528 eege 63 The Diferent Graphs Avallable ana ee 65 Getting Recorded Data OUEL eite ote p tud na onen0000 67 Retrieving Data from the Instrument ee ee 67 Converting to ASCII Formal 69 Doc No N3009 103 Revision C 01 2008 CHAPTER 9 CHAPTER 10 APPENDIX AQUADOPP CURRENT PROFILER User Guide FIR SHOP Tall on een 72 T DR 72 ls oia RU 73 Operational ENEE ee pecias rosie Ru satius sans 75 My D la Wh e Risch ee en ee 75 Correcting Data Tor Sound Speed Errors nassen 75 SEENEN 76 Groundine Problems nee E Moorin E cundem tamm E desu dum d EEEE ENNIO ud i 77 Mooring 0a 101240 D eesriie eeni Er o rir Eri NENE ENEA ENARE EENE A NE rieajo 74 Keele e 77 De 11 Problems Detecting the Instrument on the Serial Port nennen 78 Serial Loop back Teen een 78 Manten TRO REO DD m LT 79 Preventive
30. Configuration On ine Help New Ctrl N Open Chr Save Ctrl 5 Save As Ctrl P Print Print Preview Print Setup 1 Deployment 1 dep Exit File Communication Deployment View Configuration On line Alt Alt T Help Serial Port Terminal Emulator Eile Communication Deployment View Configuration On line Help Planning Start Recorder Deployment Stop Recorder Deployment View Log Recorder Data Retrieval Data Conversion Erase Recorder Communication Deployment View Configuration On line Help Toolbar v Large Buttons w Status Bar Format Deployment View Configuration On line le Communication Firmware Upgrade Sensor Head Ee RT Communication Deployment View Configuration On line Help Start Data Collection Ctrl G Start With Recorder Stop Data Collection Ctrl H Disk Filename Start Disk Recording too Gist Reroroina Ctrl R Set Clock Set Pressure Offset F Compass Calibration w Temperature Calibration E Der vi v n F T b a b E ez T e Sa S Pa Cp a File Communication Deployment View Configuration On line Help i ei K m E L Help Topics x Manual PDF A Pul d Nortek on the Web CC LH i x Sa About AquaPro WM si WS V 2 e Doc No N3009 103
31. Doc No N3009 103 Revision C 01 2008 Beam direction In beam coordinates a positive velocity along beam 1 goes in the direction towards which the beam 1 points XYZ direction The Aquadopp Profiler XYZ direction varies with the head configuration as shown here The leftmost and the rightmost units both have an X engraved to show the X direction See also Coordinate Systems for details AQUADOPP CURRENT PROFILER User Guide Doc No N3009 103 Revision C 01 2008 23 24 CHAPTER 4 Functional Description Note The AquaPro software predicts the instrumental error only In many situations environmental turbulence will dominate the short term velocity fluctuations Tip Tutorial articles on wave measurements using the PUV method can be found at http www nortekusa com principles Waves html PUV Because the magnetometer uses energy the Aquadopp Profiler reads heading only as often as t needs to This trade off between power consumption and the need for accuracy is well taken care of in the predefined deployment setups We therefore recommend that you stick to the predefined compass update rates as they appear when you select a deployment environment when creating your own deployment setup unless you have good reasons for doing otherwise Velocity Uncertainty The recorded velocity is an average of many velocity estimates called pings The uncertainty of each ping 1s dominated by the short ter
32. EE H TU 9 S TE T se 10 10 Technical Specifications 4 11 E e 1 Ke Ee Te 11 SEN Et EEN 12 Analoeu ai 12 Serial data EE eege 12 Inter alt EE 12 DOE Wale WwW 12 ge NE NR UT T 12 we 13 DIRBGSBSIOHS EE 13 NI 14 ie 14 NEO 14 Wan 14 Technical Description 15 Aaualopp Profiler EE 15 DIE 10 Power Requirements Using RS 422 nennen 16 Functional Description 19 Modes OF ED 19 UUSee Je 21 Doppler Bein ee MM EEE 22 Doc No N3009 103 Revision C 01 2008 5 Contents CHAPTER 5 CHAPTER 6 CHAPTER 7 CHAPTER 8 e E cid cR 22 eent ee HOT eier ee ee ee een ehe 22 Kee Uice E 24 ISAS UE NYY ee een nee rer nennen nee ee 24 Preparing the Instrumentation pp 21 Connectie the 28 Installing the AduaPro software on a PO ee 29 R nning the AquaPro Program een 29 Resources Available to Get You Started ee 29 Iouis a Functionality Te 29 A few words on the Break command pp 31 Testthe Recorder Fune E 34 Starting with an Empty EEN 34 Verifying the Internal Sensors ann nenn 34 Calibrating the Temperature Eege 34 KEREN 35 Setting the Pressure Sensor Offset u nennen 36 Calibraths oa 36 Upgrading the Era en ee ass 38 MOL EN eege 39 MSTA Lens able nenne ee ee ee see 40 Changing the Baud Rai nee er 40 etras To a EEEN PEEREIENENEEEHRETEESTERRIBELUEUTERTRERETTFIEENECHEIUESTOTTEERERNT 43 IER e PE OEE E E OAE E EE A AE E 43 A Tour of the AquaPro Desktop Abee 44 The AquaPro Pull down E E 45 Denion Ee 4
33. Hz profiler to the right has a slightly larger head Below The 400 kHz version has an even larger head Technical Description The illustration shows the Aquadopp Profiler variants The 400kHz model has a much larger head and the 600 kHz model has a slightly larger head than the 1 MHz and the 2M Hz versions Aquadopp Profiler Components The sensor head contains three acoustic transducers the tilt sensor the temperature sensor and the pressure sensor The Tilt sensor is mounted on a small separate pcb printed circuit board attached to the head inside the case The tilt sensor orientation is set 1n ac cordance with the system orientation during normal operation The standard Aquadopp s designed for vertical orientation However tilt sensors in heads designed for horizontal orientations will be mounted so they fit this type of orientation All Aquadopp Profilers can be used upside down relative to the designed orientation without problems e The Temperature sensor is standard on all Aquadopp Profilers and is mount ed inside the sensor head The Pressure sensor is moulded inside the Aquadopp Profiler sensor head Other components include Electronics module The electronics consist of a board holding the power transmitter analogue and digital signal processing circuitry power condition ing module and a 9 MB data recorder Compass The built in magnetometer measures the earth s magnetic field Combined wit
34. This is particularly important to do if the instrument is to be deployed near magnetic structures typically frames or other structures containing magnetic material Observe that the compass calibration must take place in situ Le mounted in the frame to take the frame s magnetic effects into account The procedure 1s described in Verifying the Internal Sensors later in this chapter e Pressure should be near zero Check the pressure sensor in a bucket 50 cm deep or put your mouth over the pressure sensor and blow to create a pressure of around 50 150 cm You may want to insert a pressure offset to align the depth indication to other measurement gear used or to com pensate for the ambient pressure More on this is found in Verifying the Internal Sensors later In this chapter If the Pressure Sensor Seems to Fail If you are running older versions prior to version 1 24 of AquaPro you may experience that the pressure sensor output zero at all times This may typically take place 1f the ambient pressure by the time of test ing is significantly lower than it was by the time the pressure sensor was calibrated Internally the instrument will note that the pressure now is negative and that will be reported as being zero negative values are always reported as Zero To circumvent this for AquaPro versions prior to v 1 24 you should add 10 m as a pressure offset see Verifying the Internal Sensors later in this chapter before submerg
35. ab This screen not shown displays the sound speed vs time If your deployment setup uses fixed sound speed this will be a flat line If your deployment setup uses a keyed in salinity and temperature the sound speed will be calculated as the temperature changes Note that any external CT sensors connected will be logged only The information they provide will not be used in the Aquadopp s own measurement Temperature tab This screen not shown displays the temperature vs time based on the Aquadopp s internal thermometer Pressure tab This screen not shown displays the pressure vs time based on the Aquadopp s internal pressure sensor Battery tab This screen not shown displays the battery voltage vs time based on the Aquadopp s internal voltage measurement Attitude tab This screen not shown shows the head pitch and roll of the Aquadopp vs time Analogue tab This screen not shown shows the signals received from ana logue sensors connected to the analogue inputs of the Aquadopp Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide CHAPTER 8 By clicking Deployment gt Stop Recorder Deployment you will be able to compare the instrument s realtime clock setting time with that of the PC Getting Recorded Data out This chapter explains how to get the data out of the Aquadopp Profiler by means of the AquaPro software If you are going to do post processing in programs l
36. ack connector see the Fig below and plug it into your serial port Run the test by typing characters whatever you type should be echoed to the screen When you remove the connector the characters stop echoing back Run the test with the Aquadopp s built in terminal emulator and if that doesn t work try HyperTerminal instead a terminal program that comes with Win dows Test your serial cable the same way Plug the cable into the computer and put a loop back connector on the end of the cable If your serial cable passes the test and you still cannot wake up the instrument there is a chance that your cable is a null modem cable f so it crosses wires 2 and 3 You can test this by substitut ing a different cable or by using a null modem adaptor in series with the cable which crosses wires 2 and 3 back Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 79 CHAPTER 10 Maintenance Before you assemble a system that involves custom cables power supplies or the like first assemble and test the Aquadopp using just the cables and battery that come with the system This is the easiest way to get the system to work and if you have trouble you can always return to this setup to confirm that problems are not caused by a faulty instrument Preventive Maintenance Cleaning Perform regular cleaning of the Aquadopp Current Profiler Use a mild detergent to clean the Aquadopp Pay special attentio
37. are given priority see Fig below Cell size can be 2 8m for 600kHz systems 1 4m for 1 MHz systems and 0 5 2 m for 2 MHz systems The lower setting is recommended for shallow wa ter deployments only Maximum recommended depth for wave burst measure ment is 20m Number of samples can be 512 1024 or 2048 The higher the number the better the estimate will be at the expense of increased time between profiler measure ments 1024 second Wave Burst 3600 second Wave Interval gt 120 second Averaging 600 second Profile Interval N Profile Mode E Wave Mode Profile Measurement Not Made Sampling rate determines the length of the wave burst Example 2 Hz and 1024 samples will cause the wave burst to take 512 seconds to do Interval is the time between each wave burst Doc No N3009 103 Revision C 01 2008 50 CHAPTER 6 Operation Use with other Instruments What are counts really For signal strength Nortek fre quently make use of the word counts which obviously seem to be connected to the decibel term but how and why Inside the Aquadopp profiler there are circuitries for the ampli fication of input signals The num ber of counts is an indicator of how much gain we must apply to a signal the less gain needed the higher the input signal level is The number of counts is inversely proportional to the logarithm of the gain setting which means that a higher number of counts ref
38. at disposal requires special precautions and or procedures Legislation for disposal of batteries especially lithium batteries vary from country to country Corrective Maintenance Only qualified personnel are allowed to perform corrective maintenance activi ties Please refer to the separate service manual or contact NORTEK for further assistance Doc No N3009 103 Revision C 01 2008 82 CHAPTER 10 Maintenance Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 83 APPENDIX Returning Aquadopp for Repair Before any product is returned for repair you must have obtained a Return Mer chandise Authorization RMA in writing from Nortek AS Copy the Proforma Invoice template overleaf or make your own but be sure to include all the information requested in the Proforma invoice Also be sure to include a copy of all shipping and export documents inside the freight box Important Freight insurance on repairs is not covered by Nortek AS You must make sure your goods are properly insured before shipment Nortek AS is by no means liable if the instrument is damaged or disappear while being shipped to Nortek AS for repair Likewise Nortek AS is not liable for conse quential damages as a result of instruments becoming damaged or disappear ing while being shipped to Nortek AS for repair Nortek AS will insure the instrument upon returning the goods to you and invoice you for this along wit
39. ck this option to enable CRC control during data conversion Dumps data from the re corder Use this option for ecorder trou bleshooting Split file This option causes the program to automatically split the data in several files when retrieving to disk Specify the maximum file size in the Max size box Use this option to e g save data in disk files that will fit on floppy disks max 1 38 Mb The files will have a sequence number appended to their filename e g mydata l prf mydata 2 prf Include header Includes header data with each file If not checked only the first file will have header data included Max size Specify the maximum split file size in Mbytes e Dump Dumps data from the recorder Use this option for recorder trouble shooting Amount Specify the number of kbytes to retrieve Use this option for re corder troubleshooting Offset Specify a recorder position in kbytes from the start of the recorder for data dump Include FAT Includes the recorder file allocation table FAT in the dump file CRC check Check this option to enable CRC control during data conver sion Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER 69 User Guide 2 Highlight the file you want click Retrieve and select the location for the file Save in C5 Fralo D Er File name Exampiod prf Files of type AquaPro Files prt Cancel ES 3 The
40. cription Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide CHAPTER 5 The contents of a standard ship ment Every effort has been made to ensure that the shipment is in accordance with your order However as a precaution we recommend that you examine the shipment carefully before head ing to the deployment site In the unlikely event of discrepancies kindly report these to the factory immediately Preparing the Instrumentation We strongly advise that you check the shipment upon arr val The below photo shows the contents of a standard shipment The type of communication cable supplied depends on the type of communication RS 232 or RS 422 ordered Optional RS 422 cable including RS 422 to RS 232 converter and Aquad quadopp RS232 cable Profiler Shipping box ee ie L N E id 4 u 8 tt 1 d Ze E Ber i KT Power supply amp mains cable 4 B z Vile attery EN VET software User Guide Doc No N3009 103 Revision C 01 2008 27 28 CHAPTER 5 Preparing the Instrumentation Use a CRT monitor and not an LCD monitor when degaussing alkaline batteries Connecting the batteries Connecting the Battery The Aquadopp Profiler is shipped with a battery pack installed n the pressure case but disconnected As a general precaution alkalin
41. d not all of them have serial ports available so you may need to get a USB RS 232 converter If one compu ter is giving you a problem try another one instead Doc No N3009 103 Revision C 01 2008 77 CHAPTER 9 Operational Concerns Power management can be a serious problem sometimes If power management takes over the PC data downloads can be disrupted sufficiently to cause the transfer to fail Power management is most commonly enabled in laptop comput ers but it can be enabled in desktops as well Problems Detecting the Instrument on the Serial Port If you cannot connect to the instrument first try sending a break to the Aquadopp Send a break by clicking Communication gt Terminal emulator and then clicking the Send Break button If the Aquadopp is powered and properly connected and if the terminal is set to use the correct serial port then you will see the Aquadopp s wake up message If you see a response consisting of garbled text or strange characters then the Aquadopp and terminal program are probably using different baud rates you could experiment by trying different baud rates Terminal gt Serial port If you suspect your computer is having problems try a different one You can also verify your serial port and cable with a serial loop back test see below Serial Loop back Test The serial loop back test verifies that the serial port can receive the same char acters it sends First make a loop b
42. d up with a circle as perfect as this one However we recommend you to do this slowly in an attempt to come as close to the ideal circle as possible The estimated maximum error after calibration is the estimated error resulting from non horizon tal rotation oblique circle Compass Calibration Calibrate Rotate the instrument slowly at least 360 degrees around the SIE Til 305 3 0 3 1 3 Heading Fitch Roll Estimated masimum error after calibration Idea 1 Please be aware that all data on the recorder will be erased when calibrating the compass Upgrading the Firmware By the term firmware we are referring to the internal software of the Aquadopp Profiler as opposed to the AquaPro software running on a PC and described n this manual When you purchase a brand new Aquadopp Profiler from the factory it has a firmware version matching the PC software Hence no firmware upgrade will be needed before you start using your Aquadopp Profiler However new functionality and in rare cases bugfixes is likely to be offered in the future requiring that the firmware is upgraded New firmware is posted on our web site at http www nortek as com support php You will need to register to get access but access is otherwise free of charge To do a firmware upgrade 1 Go to http www nortek as com support php register if this is the first time otherwise just log into the User Room click on Software amp Fi
43. e batteries should always be degaussed before you use them in your instruments you can do this yourself by placing the pad ded end of the battery up against the centre of your PC monitor CRTs not LCD screens and using the monitor s degaussing function The purpose of this is to minimise any effect on the compass Always be sure to include desiccant in the pressure case Humid air trapped inside the canister can condense enough water to damage the electrical circuitry when the instrument is deployed in cold waters To connect the battery pack 1 Remove the four screws 1 and washers holding the end cap to the pressure case and remove the end cap 2 Pull the battery out of the pressure case 2 3 Connect the battery to the 2 pin connector 3 and re insert 4 Insert the end cap to the pressure case and mount the four screws and wash ers Tighten the screws carefully to avoid damaging the threads in the pres sure case Tighten the screws only until the end cap touches the pressure case typically a torque of 2 3 Nm and you can just feel that they are seated Keep in mind that ocean pressure holds the end cap in tightly all the screws have to do is to seat the o rings properly and keep the end cap from falling out when the system is above water Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 29 Installing the AquaPro software on a PC The AquaPro CD contains everything you need
44. e file to ASCII rather than exporting it as text from here The following formats are available Metafile to be used for Clipboard File and Printer Bitmap to be used for Clipboard and File Text Data to be used for Clipboard and File e JPEG to be used for File To export a graph 1 Press X when displaying the required graph or click the Export key in the Customization Dialogue box 2 Select the type of export desired 3 Select the destination of the export 4 If available select the size of the image to export 5 Press the Export Print button Printer as destination If your exporting a metafile to the printer pressing the Print button will produce the Windows Print dialogue box which lets you print as usual Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 65 The Different Graphs Available The below screenshot examples of the available graphs are both shown in their standard look no change of colours or other tweaking as discussed in the above set of menus has been applied The Profile tab shows the velocity profile in m s and as amplitude in counts The latter is an indicator of the strength of the SSS received signal For amplitude East North Up measurements the counts scale i E spans from 0 to 255 Typical noise level is around 20 30 counts To give you an idea of how much a count is suffice it to say that one count correspond
45. e mail inquiry nortek no www nortek no 4 User manual RS we oF G f NORTEK AS Product Registration When you receive your Nortek instrument it 1s important that you visit our website and register the instrument to activate the warranty you ll find the form here www nortek as com support customer warranty warranty form Software updates and technical support For software updates and technical support www nortek as com support Nortek Forum Support If you have comments tips suggestions for improvement or any other information that you think may be of interest then you should join the Nortek Forum www nortek as com forum The Forum offers a great opportunity for you to share your experiences of using Nortek instruments and allows you to benefit from other s Your Feedback is appreciated Your feedback is much appreciated If you find errors spelling mistakes omissions or sec tions poorly explained or have any other comments on this manual please let us know email us at inquiry nortek no Contacting us If you need more information support or other assistance from us do not hesitate to contact us Nortek AS Vangkroken 2 NO 1351 RUD Norway Phone 47 6717 4500 Fax 47 6713 6770 e mail inquiry nortek no Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide DETAILS CHAPTER 1 CHAPTER 2 CHAPTER 3 CHAPTER 4 The Table of Contents Idee ET
46. e meaningless The pressure sensor can handle pressure that is about 150 of its maximum reading For example the standard 100m pressure sensor can safely withstand 150m depth Using Long Cables RS232 data communication at 9600 baud will normally work fine for cables up to 50m long depending on the environment If you want to run a longer cable you can switch to RS 422 by installing a differ ent wiring harness you can get from Nortek You can also try using RS 232 with longer cables by reducing the baud rate Keep in mind that RS 422 s a more reliable means of communication than RS 232 changing environmental conditions could cause RS 232 communications to fail over a long wire without apparent reason You should consider the voltage drop across the cable particularly 1f you use the two highest power settings see Deployment planning in Chapter 6 Operation for details on this Design your power supply and cable so that the voltage stays below 16 VDC and never falls below 9 VDC Changing the Baud Rate You may specify two separate baud rates for the Aquadopp Profiler The primary baud rate setting applies to normal communication and data transfer You can also set a secondary baud rate for data download and firmware upgrades the Recorder Configuration baud rate A higher baud rate speeds up large file transfers and is appropriate when you have a short serial cable and a relatively noise free envi ronment Doc No N30
47. easurements will be nothing but noise Fie Communication Depkrmen View Confusion On line Help Jee eii iili BMRA S Geen Seat status Sytem Date amp Time Temperature Pitch Sound speed Roll Pressure Heading Analog Inputi Analog Input PJ tm E Les Amplitude counts cn c 0 A RR RR RT DR M 10 19 20 zo EI 325 40 45 Time 5 Jesse Prenu Soe Fach Pol Hedro Sgaresl et Put the instrument in a bucket of water and observe the signal strength and the velocity The signal strength should rise noticeably the actual level de pends on the size shape and material of the bucket and the velocity data should appear less noisy Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 33 6 Check sensor readings Tilt and rotate the Aquadopp Profiler to verify that the readings make sense see Verifying the Internal Sensors later n this chapter for details Check the temperature as measured by the Aquadopp Profiler This should be close to your room temperature assuming the Aquadopp Profiler has been in the room for a while In case of incorrect temperature measure ments You may have to correct this see Verifying the Internal Sensors later in this chapter for details e Calibrate the compass if applicable
48. een Pot 1 Points BestFitCurve Points B estFitLine Points BestFitCurve Points Line Points BestFitLine Points S pline Points Line Spline Points Spline Spline T Mark Data Points T s Cancel zo Help Original ot Axes Lists the axes available for customization context sensitive depends on function viewed when this menu was entered Plot Style The AquaPro software supports a multitude of plotting methods Depending on the implementation some plotting methods may not be available Also many but not all of these plotting styles can be set for a secondary com parison plotting style If the graph has multiple y axes you can control plotting styles for each indi vidual axis by selecting the axis in the axis button group 3D This feature allows you to add three dimensional effects to the plots e Off No 3D effect is added e Shadow Draw shadows behind bars points and the area of an area graph 3D Bars and area charts are drawn in a 3D fashion Mark Data Points Adds small circular marks at data point locations Comparison Plot Style Not used The Subset Tab Customization General Plot Subsets Ass Font Coler see Subsets to Graph t Doc No N3009 103 Revision C 01 2008 The Axis tab of the graphical display Customization dialogue box AQUADOPP CURRENT PROFILER User Guide 63 Subsets The subsets tab is used to add annotation to the graphs typ
49. ended to the recorder filename for the converted files View file Selects a converted file in the drop down list to open in Note pad Save in folder Specify the location to put converted data files Browse Displays a folder selection dialog box where you can select the location to put converted data files 2 Define where to put the converted files Save in folder As default this is set to the same folder as the file to be converted resides in Save in C3 Fralo D BEEF File name Exampiod pif Files of type AguaPro Files D prf Cancel 5 3 Click Add file to insert files for conversion Select files use the SHIFT key and or the CTRL key to select more than one file and click Open 4 Files selected will now be inserted in the left column Repeat 3 if you want to convert files from other folders AQUADOPP CURRENT PROFILER User Guide 71 Data Conversion Files to convert Name 3 Select data files File name Exampio prf IV Checksum control I Burst files Files of type AquaPro Files prf Cancel Show pathnames 5 Once you have entered all the files required highlight by selecting the files to be converted and click the arrow between the two columns Data Conversion Files to convert Converted files Add file Remove Select All Iw Checksum control Save in folder Burst files Add prefix Show pathnames Add postfix VI gie Eram time 30
50. everal instruments synchronized you may want to set the PC time with a GPS card Doc No N3009 103 Revision C 01 2008 Setting the real time clock in the Aquadopp Profiler When you stop the deployment computer time and instrument time will both appear for comparison AQUADOPP CURRENT PROFILER 53 User Guide Set Clock EIE Date I meon v 34254 No v Set clock to PC time Stopping Recorder Deployment Before you tell the Aquadopp Profiler to stop collecting data verify that the computer time 1s accurate The software will compare the computer time with the Aquadopp Profiler time and you can use this information to quantify clock drifts After you recover your Aquadopp use the Aquadopp Profiler software to stop recording After you connect the Aquadopp Profiler to your computer click Deployment gt Stop Recorder Deployment or click the corresponding icon When the program tells the Aquadopp to stop collecting data it displays both the Aquadopp Profiler time and the computer time We recommend that you keep a record of the differences which can be used to correct the exact time of the Aquadopp samples assuming that your PC clock is correct Aquadopp A Deployment stopped Computer time 6 18 01 03 24 56 PM Instrument time 6 18 01 03 24 56 PM Time difference 0 seconds Doc No N3009 103 Revision C 01 2008 54 CHAPTER 6 Operation Doc No N3009 103 Revision C 01 2008
51. ew Configuration On line Help Open an Create a Start Recorder Start Stop Stop existing printout recorder data data data disk file deployment retrieval collection collection recording Icon bar TEGANE Create Save Deployment Stop Data Start Start About this a new file planning recorder conversion recorder disk program file deployment data recording collection Display control bar uunununnnnunnnnnnnnnn X9 Dim ri Kerne Yew Confer Cree Eu BG la GH beem HE pm ET Numerical display Contents is determined by the Display control bar setting L er a mm Core Ki r A e I rai n EF J z oh A wij d A Daans m D oH A OO B d r i a jT Ser T Si e D ECH vata veiei Aplud 5 e i E e u i For Hle press PI 3 i m dod mita d Y p dis frg f Lu A Ke E adm r A CM mM Ze oi a ZE adi d ga AUS i 1 WS NU nu 8 F D E D 7 D UL 298 fe Eu n A i V ke 8 d r d a i i E J 1 k P oh m m r d E d FE a iy _ mn un D p E i z E A e j d ail 5 L rS h he ee ett XXe a k z u NW E BR a a E a SR Y A p r a Se 1 a j E m P of n i kr Frie Vel Dir Velocity Amplitude Sound speed Temperature Pressure Battery Pitch Roll Heading Analog inputs Distance For Help press F1 Disconnected COM 9600 Doc No N3009 103 Revision C 01 2008 wem DL
52. g with an Empty Memory To erase the Aquadopp Profiler s contents of data 1 Make sure that any data you want to retain are transferred to your computer if applicable and that the data is in good shape 2 Click Deployment gt Erase Recorder Verifying the Internal Sensors The Aquadopp Profiler has four sensors that should be checked regularly to verify their performance These are the tilt sensor the temperature sensor the pressure sensor and the compass It is of great importance to check and calibrate the compass The compass is sensitive to all magnetic fields not only the earth s Hence magnetic material used in the mooring may bias the compass readings significantly Calibrating the Temperature Sensor The temperature sensor is calibrated using a very accurate temperature refer ence source before the instrument leaves the factory Hence we recommend that you start by checking the temperature sensor s performance by comparing its reading to that of a precision thermometer If a significant deviation is revealed you should consider to proceed as described below To calibrate the temperature sensor 1 Make sure the Aquadopp Profiler is connected to the computer and let it be exposed to a constant temperature for more than 15 minutes to stabilize the temperature readings from the instrument Doc No N3009 103 Revision C 01 2008 Temperature calibration Click On line gt Temperature calibration to produce this di
53. h the repair and freight costs If the instrument 1s under warranty repair the transport and freight insurance from Nortek AS back to you will be covered by Nortek AS Doc No N3009 103 Revision C 01 2008 Proforma Invoice gt NORTEK AS SENDER Exporter RECEIVER Name Kerr Name Nortek AS Address Vangkroken 2 Address EBEN City NO 1351 Rud Country Norway ey DEN Tel 4767174500 Fax 47671367 70 SES Po E mail inquiry nortek no Tel Po Contact Jonas R stad About the Goods Date 1 No of Unts Weight Delivery Terms Customs Account No 28605 56 Description of Goods Origin NO Value Reason for Export Scientific instrument temporarily returned for repair Customs classification 9015 90 90 Exporter s signature Nortek AS Vangkroken 2 NO 1351 Rud Norway Tel 47 67174500 Fax 47 67136770 inquiry nortek no www nortek as com
54. h the tilt sensor on the head this forms a compass which enables the Aquadopp Profiler to obtain the heading These data enables the Aquadopp Profiler to convert velocity measurements to Earth coordinates Observe that Doc No N3009 103 Revision C 01 2008 16 CHAPTER 3 Technical Description The main parts of an Aquadopp Profiler Tip NORTEK alkaline battery packs start life at a voltage of 13 5 VDC or higher The voltage of alkaline batteries falls quickly at the beginning slowly during most of its life then again quickly at the end Thus a 13 5 VDC battery pack will spend the largest part of its life somewhere in a voltage range of 10 5 12 5 VDC Caution Be sure to use silicone spray and not silicone grease on the dummy plugs and the cables The use of silicone grease on these may cause permanent damage to the system Silicone grease should be applied to the O rings only Sensor head Tiltsensor Compass Pressure Battery End bell case with O rings Pressure sensor O rings lt Acoustic Extended Battery Desiccant er daD sensors memory bulkhead board without a magnetometer the Aquadopp Profiler still measures the tilt Internal battery pack The internal battery pack is located inside the pressure case and enables autonomous deployments of up to a year It also provides backup power in the event of failure of the external supply Standard alka line battery packs use 18 AA cell batteries at a
55. ically East North Up or Beam 1 Beam 2 Beam 3 The Axis Tab Customization General Plot Subsets Axis Font Color Style Min 0 2621 Max fo 2901 X Axis Linear Log C Auto C Min C Max Min Max Min o Max f 024 Axis This tab lets you specify axis type and range Select between linear or logarithmic axes and the following range settings Auto Graph automatically determines min and max based on data Min Manually set Min and automatically set Max Max Manually set Max and automatically set Min e Min Max Manually set both the Min and Max Additional parameter fields are available when meaningful otherwise they ap pear ghosted The Font Tab The font tab not shown lets you specify font size and appearance for the titles and annotations used in the graphs The Colour Tab The colour tab not shown lets you specify the colours used in the graphs for the curves and the backgrounds The Style Tab The Style tab not shown lets you specify the look of each of the curves appear ing in a graph Exporting a Graph Graphs can be exported to the Windows clipboard as text as Windows Meta file to a printer or as files for use in other applications such as reports and pres entations Normally we recommend that you save the graph as a file Doc No N3009 103 Revision C 01 2008 64 CHAPTER 7 Real Time Applications Tip In general we recommend that you convert th
56. ig ee s EI T setting determines the instrument Be ON nen transmit level To see the conse re ME 2 quence watch the effect on battery Click OK to leave menu put utilization ting changes into effect eu ct TUE Because coastal waters and rivers Click Cancel to leave menu Ifthe default settings fail normally have high backscatter 2 undoing any changes to provide the deployment these choices reduce transmit Click Apply to put changes setup control you need you power and hence battery utiliza into effect without leaving the should use the Advanced tion If you are working in such menu settings Check this box areas but still know you have low for Advanced setting to backscatter select Deep water or F e become effective Open ocean instead Click Help to start the context sensitive Help system m B d j i E MOS amr i Doc No N3009 103 Revision C 01 2008 48 CHAPTER 6 Operation The Advanced File wrapping tab gives you When checked the Zu Power level Sets the amount of acoustic detailed control of the setup when internal recorder operates in ring E Wi GE sotings Measurement load lsd the buffer mode to EE On t surce The percentage of water Level difference ensure that it always This part is time spent in Active between High and low is holds the latest similar the
57. ike Microsoft Excel and MATLAB the data must be converted to ASCII format first This chapter shows you how Retrieving Data from the Instrument To retrieve data from the instrument 1 Click Deployment gt Stop Recorder Deployment or click the corresponding icon The instrument is collecting data Are you sure you want to stop Deployment stopped Computer time 30 05 2005 09 58 32 Instrument time 30 05 2005 09 59 33 Time difference 0 314 seconds 2 Click Deployment gt Recorder Data retrieval or click the corresponding icon Doc No N3009 103 Revision C 01 2008 67 68 CHAPTER 8 Getting the Recorded Data out Recorder data retrieval See also text for details Within a moment you will see a list of the recorded data files in the case of more than one file the most recent file will be the last one listed Causes the program to automatically splitthe data in several files when retrieving to disk Specify the maximum file size in the Max size box Recorder Data Retrieval Data files Exampllz 3049 30 05 2005 09 5 E ampl l 2196320 30 05 2005 09 2 NL plit file Dump MY Include header Amou 100 Max ase 1 38 MB Offset 2275328 bytes 133154 bytes 3408512 bytes 217 MB 6 50 MB 8 97 MB Used space Free space Capacity The following options are available Comment NAA Hi kB kB Include EAT N Retie iv CRE che ck Che
58. ing The AquaPro software will then report a positive pressure value and you will be able to confirm that the pressure changes accordingly as you submerge the transducer head From AquaPro v 1 24 and onwards this 1s taken care of internally If a negative pressure is detected the AquaPro itself adds an offset to the pressure and a second attempt is made automatically As a user you will then see that the pressure increases correctly as the transducer head is submerged Battery voltage shall be greater than 13 VDC new battery Doc No N3009 103 Revision C 01 2008 34 CHAPTER 5 Note If you leave the Aquadopp Profiler collecting data it will continue to run until the batteries are dead Always make sure to stop data collection when testing is complete This puts the Aquadopp into command mode and it will then enter into a sleep state the lowest possible power after 5 minutes of inactivity Preparing the Instrumentation Test the Recorder Function You can test the recorder with the same setup as the above Do as follows Start data collection with Online followed by Start With Recorder Write a name to use for the file you will record internally After a few minutes stop the data collection Retrieve your data by clicking Deployment gt Retrieve Data Convert lt to ASCII by clicking Deployment gt Data Conversion Review the collected data with an ASCII text editor Ge Notepad oO oa P o N Startin
59. its three beams i e in Beam coordinates but it reports data in East North and Up or ENU coordinates To get to ENU components it first converts the data to XYZ coordinates an orthogonal coordinate system relative to the Aquadopp Profiler The instrument then uses its magnetometer and tilt measurements to convert this velocity to components relative to the earth or ENU coordinates The coordinate systems are defined as follows In Beam coordinates a positive velocity along beam 1 goes in the direction towards which the beam 1 points See the right Fig for beam definitions In XYZ coordinates a positive velocity in the X direction goes in the direc tion of the X axis arrow In ENU coordinates a positive east velocity goes toward east Attitude Correction Typical moorings allow the Aquadopp Profiler to tilt and rotate freely It meas ures tilt and heading and uses this compass information to convert the data to true earth coordinates How often the instrument reads the tilt and heading de pends on the deployment setup used As is explained in Chapter 6 Operation the AquaPro software allows you to either use one of a series of predefined deployment setups or to create your own setup The predefined setups provide a compass reading frequency reflecting the ap plication For example in a near surface mooring the instrument will read the magnetometer and the tilt more often than t would on a fixed bottom mount
60. ked If the blockage is somewhere inside the measurement cell of one beam you should see elevated signal strength for that beam If the blockage is closer to the instrument the signal strength may not look very different from the other beams or it could be substantially reduced If you can collect data in real time while the instrument is deployed do as follows to see if there are any obvious obstructions in any of the beams 1 Set up the instrument to measure using 1s measurement interval 2 Select the Profile tab from the Data display selection bar 3 Look for strong reflections Correcting Data for Sound Speed Errors If you enter the wrong salinity the Aquadopp Profiler will compute an incor rect sound speed You can correct velocities V for sound speed errors using the following equation New sound speed Vnew Voip Old sound speed Doc No N3009 103 Revision C 01 2008 76 CHAPTER 9 Operational Concerns Data already acquired cannot be corrected from within the Aquadopp software so you will have to do this for yourself or add a correction term to all applicable values when importing ASCII converted data to Excel or MATLAB Boundaries and Sidelobes Profilers looking up or down typically loose data near the surface or bottom This loss is caused by contamination of the near surface data by sidelobe echoes The acoustic beams focus most of the energy in the centre of the beams but a small amount leaks out i
61. l parameters required to specify the operation of the instrument For convenience the dialogue is tabbed consisting of a Standard tab and an Advanced tab The Standard tab lets you input main settings like profile interval number of cells and cell size along with typical mounting and the environment coastal wa ter river deep water and open ocean Based on your settings the program will choose a set of default settings for the deployment If you want more control of the deployment setup click the Use advanced set tings go to the Advanced tab and refine your setup Remember to click on Update from Standard to refresh the settings already made to avoid visual inconsistency The Deployment planning pane the right part of the dialogue box see Fig displays performance parameters that are automatically updated as you change the parameter settings When finished press OK to accept the changes Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER 47 User Guide The Deployment Planning Menu Standard tab The Standard tab provides Mounting Choose the setting Deployment planning Enter the convenient default settings that best fits your deployment number of days you intend to collect for typical environments and Moving buoy and Mooring data This value will together with mounting arrangements line mounting requires more the other deployment parameters frequent compass reading and the hardware configuration be
62. lection using one of the Stop buttons before you store your Aquadopp Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 21 The cells overlap The Aqua dopp Profiler applies triangular EE CERIS TIED weighting to each measurement a T cell as indicated along the beam The baseline of the weighting function is twice the nominal cell Cell No 18 size About 75 of the acoustic return energy comes from the SE nominal sampling volume Cell No 14 d Cell No 17 Lei c Note how the cells overlap each other along the beam Cell No 12 Cell No 15 Cell No 10 A SW No 13 Cell No 8 ce No 11 Cell No 6 E en No 9 Cell No 4 con No 7 Cell No 2 Cell No 5 Cell No 3 ES Cell No 1 Blanking distance Using the Doppler Effect Tip A tutorial providing insight You hear the Doppler effect whenever a train passes by the change in pitch ee d basics you hear tells you how fast the train is moving The Aquadopp Profiler uses http www nortekusa com the Doppler effect to measure current velocity by transmitting a short pulse of principles html sound listening to its echo and measuring the change in pitch or frequency of the echo There are many ways to measure the Doppler effect each with its own advantag es and drawbacks Nortek implements a narrow band auto covariance method because this has been established as robust reliable and accurate
63. lects a need for less amplifi cation than a lower number of counts will do Strong signals have a higher noise immunity and they cor relate much better than weak signals do For the Aquadopp signal pro cessing 1 count 0 4 0 45dB Observe that the term counts is also used in other contexts viz the analogue inputs with a dif ferent relationship not related to dB Here OV equals 0 counts 5V equals 65535 counts and 2 5V equals 32768 counts in other words a 16 bit system The Aquadopp Profiler comes with two analogue inputs to enable e g a CT sensor to be connected to your system The instrument can read both analogue inputs at the same time The following should be observed The Deployment planning menu is used to determine when to sample the external sensors Choose between when measuring wave when measuring profile or during both The input impedance of the analogue inputs is 470k 2 100nF If you want to power the external sensor from the Aquadopp Profiler you must check the Output power box The output power is configured in hard ware by Nortek and can be raw i e battery power 5 V or 12 V The raw setting is the default setting and all instruments come with this setting unless otherwise was specified upon ordering To activate powering of the external sensor from the Aquadopp Profiler 1 Inthe AquaPro software click Deployment gt Planning gt Use existing or use Load from Instrument 2 Click
64. low 16 VDC and never falls below 9 VDC Permanent online installations may include other communication solutions Doc No N3009 103 Revision C 01 2008 CHAPTER 7 Real Time Applications An online real time application example More on online solutions can be found on our Web sites See text for details such as underwater modems surface buoys GSM modems and or Iridium com munication One example of such an installation 1s shown overleaf Permanent real time installations of Aquadopp Profilers have a lot in common with real time installations using the Nortek AWAC Examples of online solu tions can be found in our AWAC brochure which can be downloaded from http www nortek as com brochures AWAC pdf Articles on the subject are also available at http www nortekusa com See also Mounting Guidelines in Chapter 5 for tips on deployments RF GSM Iridium communication to shore K H K H u V Aquadopp Profiler Recording Data Internally as a Backup You can set the instrument to record data internally while at the same time send ing data out the serial port To do this use Online gt Start with recorder or click the corresponding icon If you have an internal backup battery then you can record backup data in the event of power failures The Aquadopp has two modes of internal recording The standard mode is to stop recording when the recorder is full The Aquadopp can also use a wra
65. m error We reduce the measurement uncertainty by averaging many pings together There is a limit to how much you can reduce your uncertainty We call this limit the ong term bias The long term bias depends on internal signal processing the filters and the beam geometry The long term bias in the Aquadopp Profiler is typically a frac tion of 1em s The AquaPro software predicts errors based on the short term error of a single ping and the number of pings averaged together The short term error of a single ping depends on the size of the transmit pulse and the meas urement volume and it depends on the beam geometry Velocity components parallel to the acoustic beams will have smaller short term errors than velocity components at a steep angle relative to the acoustic beams Averaging multiple pings reduces errors according to the formula Bu Ovping Vmean JN in which O is the standard deviation and N is the number pings you average together In turbulent flow such as boundary layers your data collection strategy should take into account the nature and the time scales of the environmental fluctua tions A rough rule of thumb in boundary layers is that the RMS turbulent velocity is 10 of the mean velocity If for example your mean velocity is 1 m s you could estimate turbulent fluctuations to be 10 cm s Obtaining 1 cm s RMS uncer tainty would require at least 100 pings Measuring Waves The Aquadopp Profiler may also be used to
66. measure waves using the PUV meth od However it is important to remember that the Aquadopp Profiler collects raw wave data Therefore the data by inspection may not be entirely meaningful This raw data must go through a processing step before it can be used to inter Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide pret the waves on the surface The processing will lead to class c wave estimates for height period and direction Unlike the current profile estimates the wave processing is quite complex The Nortek software programs QuickWave or Storm available separately can be used for th s post processing The Aquadopp Profiler measures the pressure and two horizontal velocity com ponents when used n wave mode The data record of the raw s gnal will not provide a clear view of the wave environ ment on the surface For instance the pressure record s an attenuated version of the free surface The attenuation depends upon the Aquadopp Profiler s deployment depth as well as the surface wave frequencies Therefore this data record is not going to be particularly useful until processing is performed This is similarly true of the orbital velocity measurements In fact the orbital velocities will often appear noisy and a sinusoidal wave pattern can sometimes be difficult to observe when waves are short in period Doc No N3009 103 Revision C 01 2008 25 26 CHAPTER 4 Functional Des
67. n other directions Because sound reflects much better from the water surface than it does from the water the small signals that travel straight to the surface can produce sufficient echo to contaminate the signal from the water The geometry of profiler sidelobe interference Only a few cells are shown for clarifica tion The top cell of the beam is shown as if it were extending into the air This has been done to give a better indication of the surface position Note that a is 25 for all Aqua dopp Profilers V indicates cell OK indicates cell not OK The above Fig illustrates how this works If the distance to the surface is A then contamination of the current measurements at the same distance A along the slanted beams In the Figure the top two cells are contaminated The following is an approximate equation for near surface contamination R H cosa ax Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide where R is the maximum range for good data a is the angle of the beam rela tive to vertical 25 for all Aquadopp Profiler models and Cell is the cell size Note that in this context a cell is either good or contaminated it cannot be partly OK Consequently the last good cell will be the one below the limit R x Grounding Problems Tests in laboratory tanks can sometimes lead to grounding problems which show up as elevated noise levels but only after the ins
68. n to the transducers Check the pressure sensor and remove any dirt in the two front holes Antifouling Antifouling paints and other agents are often used to avoid transducers get ting covered with barnacles or other evil crustac s during long deployments Depending on the water temperature fouling can be a problem already after 2 weeks in tropical areas or it can take 6 months in cold areas Sunlight is also a big factor fouling is generally much less of a problem below 100 m than it is at 5m Doc No N3009 103 Revision C 01 2008 80 CHAPTER 10 Maintenance Use a CRT monitor and not an LCD monitor when degaussing alkaline batteries Here are some things people do quotes cut from various newsgroup postings and from emails we have received In general when antifouling any acoustic Current Profiler for a long de ployment we use plastic bags Thin plastic bags of the type used as liners for small household or office bins work really well Stretch them over the acoustic Current Profiler and then bind them in place with ducting tape You need to put some tiny pinprick holes in the top of the bags so any trapped air can escape but the holes are too small to allow any organisms to enter We use zinc oxide as can be found in children s ointments A small amount on the high frequency transducers and we see no sign of fouling We have been pleased with Pettit s Trinidad anti fouling paint 75 8 cuprous oxide
69. nds on the function displayed at the moment you right clicked If Scaling appears ghosted there is nothing to set for the function currently displayed The Scaling submenu comes in two flavours with and without bin cell number specification This choice appears only when meaningful In addition the scaling submenu lets you define the time span in seconds for level vs time displays and the ERE LE data range vertical axis setting ir pm Be For profiles the scaling refers to Max zi the levels and not to the distance span shown You may also select autoscaling in some cases Doc No N3009 103 Revision C 01 2008 The General tab of the graphical display Customization dialogue box AQUADOPP CURRENT PROFILER User Guide To change the look of the graphs 1 Inthe context sensitive menu click the Customization This will produce a tabbed dialogue box 2 Setthe parameters as required for your application Parameters are explained in the following The General Tab Customization General Plot Subsets Axis Font Color Style Main Title KR Show Annotations Numeric Precision Sub Title Deg SEH Viewing Style Grid Li Color Z s C Monochrome T Grid in front of data C Monochrome Symbols Eont Size Lal Gel Sech Help Original Export Masimize Main Title amp Sub Title These two edit boxes allow adding editing and deletion of main and sub ti
70. ng frame will be subject to strong forces To survive the wave forces the mounting frame should be compact at the same time as it should be heavy Contact Nortek if you need ideas on what the mounting frame should look like The Aquadopp Profiler has been designed for easy mounting and deployment The following guidelines should give you the best possible data When mounting the Aquadopp Profiler near large obstructions bridges piers walls etc ensure that the acoustic beams do not see any obstruc tions Objects interfering with the beams may damage or destroy your data Doc No N3009 103 Revision C 01 2008 40 CHAPTER 5 Preparing the Instrumentation e Keep the Aquadopp Profiler away from magnetic materials Consider the frame or cable holding the Aquadopp Profiler and the structure it is mounted on Nearby magnetic materials could cause the directional read ings to be in error Consider the effects large objects will have on the flow itself A rough rule of thumb is that objects disturb the flow as far as 10 diameters away from the object Flow disturbance is greatest directly downstream in the wake behind the object Flow disturbance affects your measurements by changing the flow and by making it non uniform across the Aquadopp Profiler s beams All acoustic transducers must be submerged during data collection Operat ing with the transducers out of water will not cause damage but your data will b
71. nominal starting voltage of 13 5 VDC Power amp communication cable The power and communication cable is connected to the external connector The cable supplies external DC power 9 16 V and connects an external computer to the Aquadopp Profiler for two way serial communication Cable Wiring The Aquadopp comes standard with an 8 conductor RS 232 cable but it can be ordered with an 8 conductor cable for use with RS422 communication The tables list the pin assignments for cable wiring options offered The Aquadopp power and battery lines are diode protected so you don t have to worry about wiring the Aquadopp power backwards this will not damage your instrument Power Requirements Using RS 422 RS 422 power requirements are higher than those of RS 232 and harder to predict RS 422 increases sleep power consumption to at least 60mW and it in creases operational power consumption by 60 250 mW depending on how the RS 232 RS 422 converter is terminated Since RS 422 is normally used in real time operations you may supply the additional required power from an external power source Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide Wiring of RS232 cable with analogue input Underwater connector Termination Pin No Wirecolour Purpose Pins Description e screen bare Gnd ground 3 bare wires for Gnd connected internally to power Gnd Wiring of 8 conduct
72. o to our Forum and search for verifying pinging See page 4 for details on the use of our Forum Operation The AquaPro program has been designed to aid your planning execution recov ery and processing of autonomous Aquadopp Profiler deployments However the AquaPro program can also be used to control the instrument in real time applications Real time applications are covered in Chapter 7 Real Time Ap plications How to install the AquaPro software is described in Chapter 5 Pre paring the Instrumentation This chapter provides a detailed description of the use of the AquaPro program for autonomous deployment setups Data Collection The Aquadopp Profiler system allows for both self recording and real time data collection A typical sequence includes 1 Install and or plug in battery pack Refer to procedure in Chapter 6 Install new desiccant if necessary Refer to procedure in Chapter 6 Test the Aquadopp Profiler according to procedure in Chapter 4 Set PC time Use AquaPro software to plan deployment Click Deployment gt Planning Erase recorder Click Deployment gt Erase Recorder Start deployment Click Deployment gt Start Recorder Deployment oO NO Om FP W BD Enter a 6 character deployment name Doc No N3009 103 Revision C 01 2008 43 44 CHAPTER 6 Operation A Tour of the AquaPro Desktop Title bar and menu bar untitled 1 AquaPro File Communication Deployment Vi
73. ofiler to the computer as usual 2 Make sure it is possible to rotate the entire system instrument frame mooring including any extra equipment 360 around the instrument s z axis For a definition of the z axis turn to Chapter 4 Functional Description 3 Click On line gt Compass Calibration This will produce the following dia logue box The Compass Calibration dialogue box Compass Calibration J Calibrate Rotate the instrument slowly at least 360 degrees around the Heading 305 3 SEXE 00 0 jj j oo EAR TSE Ba I HE EEE data on the recorder will E be erased when ARA calibrating the compass ig ur 2 0 15 10 5 A 5 1 15 20 25 counts 4 Click Start and rotate the entire system slowly 360 around the z axis of the Aquadopp Profiler An example of successful rotation is shown below 5 To make use of the obtained values click Done You will be prompted to confirm that the new values shall be transferred to the Aquadopp to serve as the new compass setting E dk AR Dv uj Rotate the entire system slowly around the z axis of the Aquadopp Profiler Turn to Chapter 4 for a definition of the z axis Doc No N3009 103 Revision C 01 2008 38 CHAPTER 5 Preparing the Instrumentation The Compass Calibration dia logue box after a successful cali bration has been made When doing this in situ with the Aquadopp mounted in a heavy mooring structure you cannot expect to en
74. or cable for RS422 communication Underwater connector Termination m Purpose Pin No Wire colour Pins Description 2 Power pair ns screen bare Power Gnd ground 3 bare wires for Gnd connected internally to power Gnd End bell and plug Note Tx and Rx refers to the Aquadopp and not to the PC Caution Be sure to use silicone spray and not silicone grease on the dummy plugs and the cables The use of silicone grease on these may cause permanent damage to the system Silicone grease should be applied to the O rings only Doc No N3009 103 Revision C 01 2008 17 18 CHAPTER 3 Technical Description Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER 19 User Guide CHAPTER 4 Functional Description This chapter briefly describes some of the underlying principles that control the operation and application of the Aquadopp Profiler Modes of Operation Tip If you set the Aquadopp The Aquadopp Profiler has three different modes of operation Profiler to collect data remove the power then reapply power e Command mode An Aquadopp Profiler in Command mode is powered up later the Aquadopp Profiler and ready to accept your instructions If no commands are received for ap will immediately resume data proximately five minutes it will automatically power down and enter Sleep collection Remember that the internal clock may have lo
75. p around mode in which it keeps only the most recent data overwriting the oldest data when the recorder is full Wrap around data recording makes good sense when Doc No N3009 103 Revision C 01 2008 The two menu bars used for determining what to display AQUADOPP CURRENT PROFILER 57 User Guide you are backing up external recording against the possibility of power failures This is set up in the Deployment planning menu see Chapter 6 for details Online Viewing of Acquired Data Online presentation of acquired data can be numerical tabulated as well as graphical Display control bar H H p s e manga e Gomera Den Yew ofge Qnae OFA E Ac S AES Numerical display SESS Contents is n determined by the Display control bar setting 0 Graphical display Contents is determined by the Data display selection bar setting Data display selection bar Profile Yel Dir Velocity Amplitude Sound speed Temperature Pressure Battery Pitch Roll Heading Analog inputs Distance For Help press F1 Disconnected COM 9600 Numerical View Options The numerical view options include tabulated presentations of the measured cur rent profiles sensor information system status and system information The current tab provides a tabulation of the measured current profiles per cell including the measured amplitudes indicating the received signal strength Doc No N3009 103
76. r your name e mail address and topics of interest We also recommend our User Forum where you may post questions and discuss with other people in the oceanographic community To get to the User Forum enter http www nortek as com and click on Forum If you have no internet ac cess or 1f you for any other reason prefer traditional mail or telefax you may fill in and return the registration part of the warranty sheet accompanying your Nortek product Nortek AS grants a one year limited warranty that extends to all parts and labour and covers any malfunction that is due to poor workmanship or due to errors in the manufacturing process The warranty does not cover shortcomings that are due to design nor does it cover any form of consequential damages as a result of errors in the measurements In the unlikely event of trouble with your Nortek product first try to identify the problem by consulting the documentation accompanying your Nortek product If you need further assistance when trying to identify the problem please con tact your local Nortek representative or the factory Please make sure you receive a Return Merchandise Authorization RMA before any product or module is returned An RMA can be obtained using our e mail address inquiry nortek no or our Fax No 4767136770 See also the Appendix Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide Technical Specifications Water velocity measuremen
77. rmware and download the new firmware file to your computer Save it 2 Make sure your Aquadopp Profiler is connected to the computer and that they communicates well together 3 Click on Configuration gt Firmware Upgrade in the AquaPro software browse to the downloaded firmware file and select it Doc No N3009 103 Revision C 01 2008 AQUADOPP CURRENT PROFILER User Guide 39 This will produce the following dialogue box Firmware upgrade in progress Firmware Upgrade x Transmitting File To ensure that the Aquadopp Profiler firmware avoids becoming corrupted because the download transmission failed during the download process the Aquadopp runs a check on the received file before it is allowed to replace the existing firmware Once verified as valid the following dialogue box will appear The instrument warns you that any data acquired in the Aquadopp Profiler will be erased to avoid inconsistencies Please be aware that all data on the recorder will be erased when upgrading firmware Fress Cancel to abort E Cancel Just to warn you that any data residing 1n the Aquadopp Profiler will be erased to avoid inconsistencies In other words transfer data that you would like to retain to your PC before you upgrade the firmware Mounting Guidelines The Aquadopp Profiler is often used in areas with large waves Large waves gen erate strong orbital currents which again means that the mounti
78. s to approximately 0 4dB Hence counts are logarithmic by nature Distance m Distance m 100 Se Lu o 200 ee zou Amplitude counts Battery Pitch Roll Heading Analog inputs Distance The Vel Dir tab shows the combined velocity profile in East North direction Up is ignored The corresponding direction is in degrees relative to North following traditional compass conventions so that positive increasing angles are clockwise towards East If you used XYZ the direction angle will be relative to the X direction but it will not follow the usual trigonometric conventions as Compass conventions are P qs preferred p PE Ai T EE 9 0 Distance m Distance m 2 1 10 15 D a L U Profile perature Pressure Battery Pitch Roll Heading Analog inputs Distance BS For Help press Fi Disconnected Comi 9600 4 E S a AF aes Fa da a F m i sr m SW a iiid o PP E E D gs MUR Br d d Other displays available Velocity tab The Velocity screen not shown displays the velocity of the first cell in accordance with the coordinates you specified n the deployment setup Amplitude tab This screen not shown displays the velocity vs time of the first cell in counts to indicate received signal strength and in accordance with the coordinates you specified in the deployment setup Doc No N3009 103 Revision C 01 2008 66 CHAPTER 7 Real Time Applications Soundspeed t
79. splay and enter the ambient temperature Make sure the Aquadopp temperature readings have stabilized see text for details AQUADOPP CURRENT PROFILER User Guide 35 2 Click Online gt Temperature Calibration 3 Use a thermometer with sufficient precision for your task to read the ambient temperature and key in this temperature in the Aquadopp dialogue box 4 Follow the online instructions lompo sue Labbrolen t pt e nn 8 ee Se u EE _Tomperature 22142 Verifying the Tilt Sensor To verify the tilt sensor 1 While the Aquadopp Profiler is connected to the computer place it level on a flat surface 2 In the main screen inspect the heading pitch and roll readings Doc No N3009 103 Revision C 01 2008 36 CHAPTER 5 Preparing the Instrumentation Tilt sensor verification Click the Sensors tab in the numerical tab part of the main screen and verify that the tilt readings make sense In case of significant j Untitled 1 AquaPro deviations contact the factory Curent Sensors Status System MEANE Temperature Pitch Roll Heading Sound speed Pressure Analog inputi Battery Analog Input2 Setting the Pressure Sensor Offset To calibrate the pressure sensor Tip See also Running a Functionality Check item 6 1 Have the Aquadopp Profiler connected to the computer and submerge the in this chapter of the manual Aquadopp Profiler in water Click On line gt
80. st the or Power down mode correct time of day Most commands cannot be sent directly to the Aquadopp Profiler These commands include 1 a the deployment setup commands Instead you must enter commands through the AquaPro software The AquaPro software and hardware interact with each other using low level binary data structures This approach simplifies the design of the AquaPro hardware and increases its overall reliability Data acquisition mode The Aquadopp Profiler enters the Data acquisition mode when you click any of the Start commands 1 e Start Recorder Deploy ment in the AquaPro software When you initiate a deployment sequence the software converts your setup parameters into binary structures downloads the structures to the Aquadopp Profiler and tells t to start data collection To get the instrument out of Data acquisition mode use one of the Stop com mands in the AquaPro software You might notice that sending a break to an Aquadopp Profiler in Data acquisition mode will produce a response from the instrument but the data acquisition itself will be unaffected The purpose Doc No N3009 103 Revision C 01 2008 20 CHAPTER 4 Functional Description Basic concepts The Aquadopp Profiler measures the current in a set of cells along each beam to obtain the current profiles as shown in this simplified drawing For clarity only five cells are shown for each beam The fact that the cells overlap each other
81. t Acoustic frequency 0 4MHz 0 6 MHz LOMHz 2 0MHz Maximum profiling range 60 90m 30 40 m 12 20m 4 8m Cell size 2 8m 4m 0 3 4m 0 1 2 m Minimum blanking Im 0 50m 0 20m 0 05 m Maximum number of cells 128 Velocity Range 10m s call for extended range Accuracy 1 of measured value 0 5 cm s Max Sampling rate 1Hz Velocity uncertainty Consult software program The Aquadopp profiler measures the current profile in a user specified number of cells from the instrument out to a maximum range that depends on the acoustic scattering conditions The lower range should be expected with clear water and small cells and the higher range with large cells and acoustically turbid water Echo intensity Sampling Same as velocity sampling rate Resolution 0 45 dB Dynamic range 90dB Transducer Frequency 0 4 MHz 0 6MHz 1 0M Hz 2 0M Hz Number of beams 3 3 3 3 Beam width 3 7 3 0 3 4 17 Doc No N3009 103 Revision C 01 2008 11 12 CHAPTER 2 Technical Specifications Standard sensors Temperature sensor Thermistor embedded Range 4 C to 40 C Accuracy resolution 0 1 C 0 01 C Time response 10 m n Compass sensor Flux gate with liquid tilt Maximum tilt 30 Accuracy resolution 2 0 1 Tilt sensor Liquid level Accuracy resolution 0 2 0 1 Up or down Automatic detect Pressure sensor Piezoresistive Range 0 100 m standard Accuracy resolution 0 25 0 005 of full scale
82. tion pressure sensor gives the depth and the tidal elevation if the system ls fixed mounted The standard 9 MB recorder and internal alkaline batteries are typically sufficient for a 2 4 month deployment Deployment times can be increased or sampling schemes intensified by expanding to 161MB memory and external lithium or even rechargeable batteries Further ex pansion is available through the use of external battery canisters Practical Use One quick glance at the Aquadopp profiler tells you that it is a small and practi cal current profiler that is simple to deploy It gives you the full current profile and it comes standard with all the trimmings such as a internal recorder com pass tilt pressure temperature software cable etc Doc No N3009 103 Revision C 01 2008 9 10 CHAPTER 1 Introduction Getting Started To get you up and running 1 Before you start using the Aquadopp please familiarize yourself with the Current Profiler by reading Chapters 2 3 and 4 of this user guide 2 Perform reception control and functional test of the Aquadopp according to procedures in Chapter 5 3 Start using the Aquadopp according to procedures in Chapter 6 4 Perform regular maintenance according to procedures in Chapter 10 Warranty In order to stay up to date and receive news and tips from the factory you should register at our web site Use the Internet and go to http www nortek as com newsletter php Ente
83. tles If no title is present entering one will add one If you re move all the characters from a title the title will be deleted from the image Viewing Style The graph supports three viewing styles e Color Monochrome Monochrome with Symbols This customization allows you to quickly adjust the 1mage to best suit print ing on a monochrome printer If fewer than four subsets are to be included in a graph then the Monochrome setting will probably be the best choice If four or more subsets are to be included in the graph then Monochrome with Symbols will help distinguish between the different subsets Font Size The graph supports three font sizes Large Medium and Small This gives you the option of selecting the font size that is most readable When print ing the graph a font size of Medium or Small is suggested Numeric precision Defines the number decimals to be used when placing data labels onto the graph and when exporting Text Data via the Export Dialogue box Grid Lines The graph can contain vertical grid lines horizontal grid lines both vertical and horizontal grid lines or no grid lines Grid lines can be made to ap pear in front of the graph Doc No N3009 103 Revision C 01 2008 62 CHAPTER 7 Real Time Applications The Plot tab of the graphical display Customization dialogue box The Subset tab of the graphical display Customization dialogue box The Plot Tab Customization z
84. to install and run the Nortek AquaPro application and has been designed for computers running Microsoft Windows 2000 and Windows XP You must install the application from the CD onto your hard disk you cannot run the program from the CD Installing the program 1 Insert the AquaPro CD Browse to the AquaPro program folder and locate the file Setup exe 2 Double click Setup exe and follow the on screen instructions Running the AquaPro Program You start the Nortek AquaPro just as you would start any software application Click Start gt Programs gt Nortek gt AquaPro If you installed the program in a folder different from the default setting default folder name is Nortek substitute accordingly in the above setting Resources Available to Get You Started The following resources are at your disposal to get you up and going e This manual which also is accessible from within the program e The on line help which also contains a context sensitive help section Nortek on the world wide web for updates and technical support see details on page 4 of this user guide The Nortek Forum see details on page 4 of this user guide Running a Functionality Test To run a functionality test 1 Plug in the AC adaptor and connect the Aquadopp to the PC serial port Start the AquaPro program 2 Select Serial Port from the Communication menu to specify the port number to use Doc No N3009 103 Revision C 01 2008
85. trument is placed in the water You will not automatically see the increased noise level in your data if your signal from the water is above the noise but the increased noise level could look like signal Grounding problemsis normally only a problem during the tests and velocity calibration Feel free to contact Nortek for further guidance Keep in mind that grounding problems occur around man made structures but are not normally a problem in the field Mooring Tilt Sometimes moorings tilt excessively or even fall over If the Aquadopp Profiler s tilt reading is 20 or less your data should be within the specifications Tilt read ings between 20 and 30 affect the data accuracy in a way that 1s likely to make the data fail to meet the specifications Data acquired during tilts exceeding 30 are in general not reliable and should be discarded Mooring Vibration Excessive mooring vibration can adversely affect your data Vibration introduc es spurious velocities and interferes with the proper operation of the tilt sensor If you discover that mooring vibration is a problem you should try to find ways to reduce the vibration Troubleshooting Simple Problems Most initial problems can be traced to forgetting to power the system the DB 9 connector falling out of the computer or using the wrong serial port Remember that new Aquadopp Profilers ship with the battery disconnected Computers don t always behave as they should an
86. y selecting Deployment gt Planning gt Use existing to produce the below dialogue box Set the Profile interval s to 1 second as shown and click OK Then click Online gt Start Data Collec tion or the corresponding icon Doc No N3009 103 Revision C 01 2008 32 CHAPTER 5 Preparing the Instrumentation Setting the profile interval to 1 second Screenshot taken from a PC running Windows XP showing pinging in air and consequently the noise floor If you haven t set the date in your Aquadopp yet it will show a date from the year 2000 Be sure to select Amplitude in the bottom line of the display as indicated in the Fig Deployment Planning Standard Advanced Mounting Deployment planning C Moving buoy Assumed duration days 30 C Mooring line e Battery utilization Fixed structure of 50 Whi o Memory required MB Vertical vel prec cm s oz Horizont vel prec cm s 22 Environment Coastal water River C Deep water gt 300 m C pen ocean Compass update rate s eo Use Advanced Settings Power level HIGH toes am ej Keep the Aquadopp Profiler out of water This pinging in air should produce a signal strength Amplitude of 20 30 counts 2 MHz version 25 35 counts 1 MHz version 30 40 counts 600 kHz version and 20 40 counts 400 kHz version The signal level thus obtained is called the noise floor When the in strument pings in air the velocity m

Nortek Aquadopp Current Profiler Manual

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