SBE 49 FastCAT Conductivity, Temperature, and Pressure Sensor with RS-232 Interface If deploying vertically, intended for deployment in orientation shown (sensors at top) for proper pump operation User’s Manual Sea-Bird Electronics, Inc. 13431 NE 20th Street Bellevue, Washington 98005 USA Telephone: +1 425-643-9866 Manual Version #016, 03/18/14 Fax: +1 425-643-9954 Firmware Version 1.3a and later seabird@seabird.com Seasave V7Version 7.23.2 and later www.seabird.com SBE Data Processing Version 7.23.
Limited Liability Statement Extreme care should be exercised when using or servicing this equipment. It should be used or serviced only by personnel with knowledge of and training in the use and maintenance of oceanographic electronic equipment. SEA-BIRD ELECTRONICS, INC. disclaims all product liability risks arising from the use or servicing of this system. SEA-BIRD ELECTRONICS, INC.
Manual revision 016 Declaration of Conformity Declaration of Conformity 3 SBE 49
Manual revision 016 Table of Contents SBE 49 Table of Contents Limited Liability Statement ................................................................ 2 Declaration of Conformity .................................................................. 3 Table of Contents ................................................................................. 4 Section 1: Introduction ........................................................................ 6 About this Manual .....................................
Manual revision 016 Table of Contents SBE 49 Section 5: Routine Maintenance and Calibration ........................... 47 Corrosion Precautions ......................................................................................47 Connector Mating and Maintenance ................................................................47 Conductivity Cell Maintenance .......................................................................48 Pressure Sensor Maintenance ...........................................
Manual revision 016 Section 1: Introduction SBE 49 Section 1: Introduction This section includes contact information, Quick Start procedure, and photos of a typical FastCAT shipment. About this Manual This manual is to be used with the SBE 49 FastCAT Profiler Conductivity, Temperature, and Pressure Sensor. It is organized to guide the user from installation through operation and data collection.
Manual revision 016 Section 1: Introduction SBE 49 Unpacking FastCAT Shown below is a typical FastCAT shipment.
Manual revision 016 Section 2: Description of FastCAT SBE 49 Section 2: Description of FastCAT This section describes the functions and features of the SBE 49 FastCAT, including specifications, dimensions, connector, and communications.
Manual revision 016 Section 2: Description of FastCAT Note: The FastCAT’s pump is not designed to be used to pump water through other sensors. Other sensors requiring pumped water need a separate pump.
Manual revision 016 Section 2: Description of FastCAT SBE 49 Note: SBE 36’s Surface PAR interface was optional prior to 2012. SBE 36 CTD Deck Unit and Power Data Interface Module (PDIM) These items provide power and real-time data handling capability over singleconductor sea cables using the same method employed in the SBE 32 / SBE 33. The PDIM is a small pressure housing that is mounted on or near the FastCAT.
Manual revision 016 Section 2: Description of FastCAT SBE 49 Specifications Temperature (°C) Measurement Range Conductivity (S/m) -5 to +35 0 to 9 Strain-Gauge Pressure 0 to full scale range: 20 / 100 / 350 / 600 / 1000/ 2000 / 3500 / 7000 meters (expressed in meters of deployment depth capability) Initial Accuracy Typical Stability ± 0.002 ±0.0003 ± 0.1% of full scale range 0.0002 per month 0.0003 per month 0.05% of full scale range per year 0.00005 (oceanic waters; resolves 0.
Manual revision 016 Section 2: Description of FastCAT SBE 49 Dimensions and End Cap Connector Note that exhaust barb and screw holding exhaust barb to sensor end cap are not flush to housing – this is normal. An O-ring inside seals fitting into end cap. FastCAT with straight exhaust (as shipped by Sea-Bird) See Optimizing Data Quality in Section 4: Deploying and Operating FastCAT for guidelines on use of straight vs. tee exhaust.
Manual revision 016 Section 2: Description of FastCAT Cables and Wiring 13 SBE 49
Manual revision 016 Section 2: Description of FastCAT SBE 49 Data I/O The FastCAT receives setup instructions and outputs data and diagnostic information via a three-wire RS-232C link, and is factory-configured for 9600 baud, 8 data bits, 1 stop bit, and no parity. FastCAT RS-232 levels are directly compatible with standard serial interface cards (IBM Asynchronous Communications Adapter or equal).
Manual revision 016 Section 3: Power and Communications Test SBE 49 Section 3: Power and Communications Test This section describes software installation and the pre-check procedure for preparing the FastCAT for deployment. The power and communications test will verify that the system works, prior to deployment. Software Installation Notes: • Help files provide detailed information on the software. Separate software manuals on the CD provide details on Seasave V7 and SBE Data Processing.
Manual revision 016 Section 3: Power and Communications Test SBE 49 Test Note: See Seaterm’s help files for detailed information. 1. Double click on SeaTerm.exe. If this is the first time the program is used, the setup dialog box may appear: SBE49 Select the instrument type (SBE 49) and the computer COM port for communication with the FastCAT. Click OK. 2.
Manual revision 016 Section 3: Power and Communications Test SBE 49 Following are the Toolbar buttons applicable to the FastCAT: Toolbar Button Description Equivalent Command* Re-establish communications with FastCAT. Computer responds with (press Enter key) S> prompt. Display instrument setup and status Status (configuration and setup parameters, DS whether FastCAT is sampling, etc.). Coefficients Display calibration coefficients.
Manual revision 016 Section 3: Power and Communications Test 3. In the Configure menu, select SBE 49. The dialog box looks like this: Interface for communication between computer and FastCAT Computer COM port, baud rate, data bits, and parity for communication between computer and FastCAT Note: • Seaterm’s baud rate must be the same as the FastCAT baud (set with Baud=). Baud is factory-set to 9600, but can be changed by the user (see Command Descriptions in Section 4: Deploying and Operating FastCAT).
Manual revision 016 Section 3: Power and Communications Test 6. SBE 49 Display FastCAT status information by clicking Status on the Toolbar. The display looks like this: SBE 49 FastCAT V 1.3a SERIAL NO. 0055 number of scans to average = 1 pressure sensor = strain gauge, range = 1000.0 minimum cond freq = 3000, pump delay = 30 sec start sampling on power up = no output format = converted decimal output salinity = no, output sound velocity = no temperature advance = 0.0625 seconds celltm alpha = 0.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Section 4: Deploying and Operating FastCAT This section includes discussions of: Note: Help files contain detailed information on software setup and use.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Polled Sampling On command (TS), the FastCAT takes one sample and transmits the data real-time. The pump does not turn on automatically for polled sampling (MinCondFreq= and PumpDelay= do not apply). To run the pump before taking a sample, send PumpOn to turn the pump on before sending TS. Send PumpOff to turn the pump off after taking the sample. Example: Polled Sampling (user input in bold) Apply power and wake up FastCAT.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Autonomous Sampling The FastCAT runs continuously, sampling data at 16 scans per second (16 Hz) and transmitting the data real-time. The FastCAT can be set to average up to 255 samples, transmitting only the averaged data. AutoRun defines how autonomous sampling starts and stops: If AutoRun=Y To Start Sampling Turn on power. AutoRun=N Send Start.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Example 1: Autonomous Sampling Setup for AutoRun=N (user input in bold) Apply power and wake up FastCAT. Set up to average every 4 samples, and output data in raw hexadecimal format. Set up with a 60-second pump turn-on delay after pump enters water to ensure pump is primed before turning on. Verify setup with status command. Remove power. (Apply power, then click Connect on Toolbar to wake up.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Real-Time Data Corrections Note: Cell thermal mass corrections should not be applied to freshwater data. It can give bad results, due to the way the derivative dc/dT is calculated in regions where conductivity changes are very small. Currently, the SBE 49 firmware does not permit you to apply just aligning and filtering, without also applying cell thermal mass corrections.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Baud, Cable Length, and Data Transmission Rate Without a Sea-Bird Deck Unit Notes: • Baud rate is set with Baud=. • Real-time output rate is set with NAvg=. • Output format is set with OutputFormat=. See Command Descriptions.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Power and Cable Length for FastCAT without Deck Unit On the ship, cables longer than 3 meters should be installed inside an earthed metal conduit by a qualified electrician. This minimizes the potential for external signals to disrupt communication and ensures that high voltage lines (such as the sea cable) are sufficiently protected.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Command Descriptions This section describes commands and provides sample outputs. See Appendix III: Command Summary for a summarized command list. When entering commands: • • • • • • Input commands to the FastCAT in upper or lower case letters and register commands by pressing the Enter key. The FastCAT sends ?CMD if an invalid command is entered.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Status Command DS Display operating status and setup parameters. Equivalent to Status on Toolbar. List below includes, where applicable, command used to modify parameter.
Manual revision 016 Notes: • The FastCAT’s baud rate (set with Baud=) must be the same as Seaterm’s baud rate (set in the Configure menu). • The minimum baud is dependent on sampling rate (NAvg=) and output format (OutputFormat=). See Baud, Cable Length, and Data Transmission Rate and Data Output Formats. Note: Sea-Bird’s real-time data acquisition software (Seasave) requires data in raw hexadecimal (OutputFormat=0).
Manual revision 016 Note: In Seaterm, to save real-time data to a file, click Capture on the Toolbar before beginning sampling. Section 4: Deploying and Operating FastCAT SBE 49 Autonomous Sampling Commands Autonomous sampling directs the FastCAT to sample data at 16 Hz and transmit the data real-time. The FastCAT can be set to average up to 255 samples, transmitting only the averaged data.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Autonomous Sampling Commands (continued) Notes: • See Real-Time Data Corrections for detailed explanations of ProcessRealTime=, TAdvance=, Alpha=, and Tau=. • If ProcessRealTime=Y but OutputFormat=0 or 2 (output raw hex or raw decimal data), the status reply shows: real-time temperature and conductivity correction enabled, not applied to raw data, and the FastCAT does not perform real-time corrections.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Polled Sampling Commands PumpOn Turn pump on. Use this command: • Before sending TS to obtain pumped conductivity data, or • To test pump. PumpOff Turn pump off. TS Take 1 sample and transmit data. Testing Commands Note: Testing commands do not automatically turn the pump on.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Coefficients Commands DCal Display calibration coefficients. Equivalent to Coefficients on Toolbar. Example: Display coefficients for FastCAT (user input in bold). S>dcal SBE 49 FastCAT V 1.3a SERIAL NO. 0055 temperature: 26-apr-01 TA0 = -3.178124e-06 TA1 = 2.751603e-04 TA2 = -2.215606e-06 TA3 = 1.549719e-07 TOFFSET = 0.000000e+00 conductivity: 26-apr-01 G = -9.855242e-01 H = 1.458421e-01 I = -3.290801e-04 J = 4.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Data Output Formats Note: See Baud, Cable Length, and Data Transmission Rate for the interaction of output format, data transmission rate, baud rate, and cable length. Output format is dependent on OutputFormat (=0, 1, 2, or 3). Each line of data is ended with a carriage return and line feed. OutputFormat=0 (raw data in Hexadecimal) Notes: • If you will be using Seasave to acquire real-time data, set OutputFormat=0.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 OutputFormat=2 (raw data in decimal) Data is output in the order listed, with a comma followed by a space between each parameter. Shown with each parameter are the number of digits and the placement of the decimal point. Leading zeros are suppressed, except for one zero to the left of the decimal point. 1. 2. 3. 4. Temperature A/D counts = tttttt Conductivity frequency (Hz) = cccc.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Optimizing Data Quality This section contains guidelines for obtaining the best quality data. Some of these guidelines may conflict with the goals of a particular application, but you should be aware of the tradeoffs of data quality vs. mission goals.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Downcast Data If performing a single vertical profile from above the surface, and wanting to obtain downcast data, optimal orientation is horizontal, with the temperature sting at the bottom. This provides an upward path to the system plumbing, allowing air to be quickly expelled during a brief soak period just below the surface, ensuring proper pump operation for the entire cast.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Equalizing Pressures when Mounted on a Vehicle Vehicle Plane through intake and exhaust parallel with vehicle surface or vehicle surface tangent An object moving through water has a large pressure gradient around the vehicle and/or any major protuberances.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Setup for Deployment Program the FastCAT for the intended deployment using Seaterm (see Command Descriptions). Note: See Acquiring and Processing Data with Seasave and SBE Data Processing. Note: See Acquiring Real-Time Data with ROV, AUV, etc. for Processing by Sea-Bird Software.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Deployment CAUTIONS: • Do not use WD-40 or other petroleum-based lubricants, as they will damage the connectors. • For wet-pluggable MCBH connectors: Silicone lubricants in a spray can may contain ketones, esters, ethers, alcohols, or glycols in their propellant. Do not use these sprays, as they will damage the connector. Locking sleeve Cable Note: See Optimizing Data Quality above for guidelines on use of the straight fitting vs.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Acquiring and Processing Data with Seasave and SBE Data Processing Notes: • Seasave and SBE Data Processing versions 7.20a introduced .xmlcon files (in XML format). Versions 7.20a and later allow you to open a .con or .xmlcon file, and to save it to a .con or .xmlcon file. Seasave and SBE Data Processing use the same file. • A new or recalibrated CTD ships with a configuration file that reflects the current configuration as we know it.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Acquiring Real-Time Data with Seasave Instructions below are for a FastCAT used without a Sea-Bird Deck Unit. If using the FastCAT with the SBE 33 or 36 Deck Unit, see the applicable Deck Unit manual. Note: The baud rate between the FastCAT and computer (defined in Configure Inputs, on the Serial Ports tab) must match the baud rate set in the FastCAT with Baud=. 1. Start FastCAT sampling: • If AutoRun=Y: Turn on power.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 5. In the Start Real-Time Data Acquisition dialog box, click Start. A. If you selected Begin archiving data immediately or Begin archiving data when ‘Start Archiving’ command is sent above, and selected Prompt for Header Information in the Header Form setup (Configure Outputs), the Header Information dialog box appears. Fill in the desired header and click OK. B. If you selected NMEA position data added in the .xmlcon or .
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Acquiring Real-Time Data with ROV, AUV, etc. for Processing by Sea-Bird Software Note: You can perform additional processing in SBE Data Processing even if you already aligned, filtered, and corrected for cell thermal mass using the FastCAT’s real-time data processing capability (ProcessRealTime=Y).
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Recovery WARNING! If the FastCAT stops working while underwater, is unresponsive to commands, or shows other signs of flooding or damage, carefully secure it away from people until you have determined that abnormal internal pressure does not exist or has been relieved. Pressure housings may flood under pressure due to dirty or damaged o-rings, or other failed seals.
Manual revision 016 Section 4: Deploying and Operating FastCAT SBE 49 Editing Raw Data File Sometimes users want to edit the raw .hex data file before beginning processing, to remove data at the beginning of the file corresponding to instrument soak time, remove blocks of bad data, edit the header, or add explanatory notes . Editing the raw .hex file can corrupt the data, making it impossible to perform further processing using Sea-Bird software.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Section 5: Routine Maintenance and Calibration This section reviews corrosion precautions, connector mating and maintenance, conductivity cell storage and cleaning, pressure sensor maintenance, O-ring maintenance, plastic housing handling instructions, replacing optional AF24173 Anti-Foulant Devices, and sensor calibration.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Conductivity Cell Maintenance CAUTIONS: • Do not put a brush or any object inside the conductivity cell to dry it or clean it. Touching and bending the electrodes can change the calibration. Large bends and movement of the electrodes can damage the cell. • Do not store the FastCAT with water in the conductivity cell.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Handling Instructions for Plastic Housing The FastCAT’s 7000-meter titanium housing offers the best durability with a modest amount of care. A plastic housing saves money and weight. However, more care and caution in handling is required.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Replacing Optional Anti-Foulant Devices – Mechanical Design Change Dummy Anti-Foulant Device for intake fitting The T-C Duct also serves as the anti-foulant device intake fitting. In the typical configuration (no anti-foulant devices), the intake fitting is shipped with a dummy anti-foulant device (inert plastic) installed to reduce turbulence in the T-C Duct.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Replacing Optional Anti-Foulant Devices (SBE 49) AF24173 Anti-Foulant Device As an option, the FastCAT is supplied with anti-foulant device fittings and Anti-Foulant Devices. The Anti-Foulant Devices are installed: • in the T-C Duct assembly; • in the anti-foulant device cup and cap (part of the external pump exhaust tubing).
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Anti-Foulant Device in Pump Exhaust Tubing 1. Carefully cut the cable tie securing the Tygon tubing to the anti-foulant device cap. Slip the Tygon tubing off of the anti-foulant device cap. 2. Unscrew the cap with a socket wrench. 3. Remove the old Anti-Foulant Device. If the old device is difficult to remove, use needle-nose pliers and carefully break up material. 4. Place the new Anti-Foulant Device in the cup. 5.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Sensor Calibration Sea-Bird sensors are calibrated by subjecting them to known physical conditions and measuring the sensor responses. Coefficients are then computed, which may be used with appropriate algorithms to obtain engineering units.
Manual revision 016 Section 5: Routine Maintenance and Calibration SBE 49 Pressure Sensor Calibration The FastCAT’s strain-gauge pressure sensor is capable of meeting the FastCAT’s error specification with some allowance for aging and ambienttemperature induced drift. Pressure sensors show most of their error as a linear offset from zero.
Manual revision 016 Section 6: Troubleshooting SBE 49 Section 6: Troubleshooting This section reviews common problems in operating the FastCAT, and provides the most likely causes and solutions. Problem 1: Unable to Communicate with FastCAT in Seaterm (terminal program) The S> prompt indicates that communications between the FastCAT and computer have been established.
Manual revision 016 Section 6: Troubleshooting SBE 49 Problem 4: Scan Length Error in SBE Data Processing Note: To view the Diagnostics file, select Diagnostics in Data Conversion’s Options menu. In the Diagnostics dialog box, click on Display Log File. Cause/Solution 1: If the scan length in the data file does not match the selected .xmlcon or .
Manual revision 016 Glossary SBE 49 Glossary FastCAT – High-accuracy conductivity, temperature, and pressure sensor. Fouling – Biological growth in the conductivity cell during deployment. PCB – Printed Circuit Board. SBE Data Processing – Sea-Bird’s Win 2000/XP data processing software, which calculates temperature, conductivity, and pressure; derives variables such as salinity and sound velocity; and plots data.
Manual revision 016 Appendix I: Functional Description and Circuitry SBE 49 Appendix I: Functional Description and Circuitry Sensors The SBE 49 embodies the same sensor elements (3-electrode, 2-terminal, borosilicate glass cell, and pressure-protected thermistor) previously employed in Sea-Bird’s modular SBE 3 and SBE 4 sensors and in the SeaCAT and SeaCATplus. The FastCAT uses three independent channels to digitize temperature, conductivity, and pressure concurrently.
Manual revision 016 Appendix II: Electronics Disassembly/Reassembly SBE 49 Appendix II: Electronics Disassembly/Reassembly Disassembly CAUTION: See Section 5: Routine Maintenance and Calibration for handling instructions for the plastic housing. Remove screw (2 places) 1. Remove the connector end cap: A. Wipe the outside of the end cap and housing dry, being careful to remove any water at the seam between them. B. Remove the 2 Phillips-head screws holding the connector end cap to the housing.
Manual revision 016 Appendix III: Command Summary SBE 49 Appendix III: Command Summary CATEGORY COMMAND Status DS Baud=x OutputFormat=x Setup OutputSal=x OutputSV=x SetDefaults NAvg=x MinCondFreq=x PumpDelay=x ProcessRealTime=x Autonomous Sampling TAdvance=x Alpha=x Tau=x AutoRun=x Start Stop Polled Sampling Testing Takes and outputs 100 samples for each test. Press Esc key or Stop on Toolbar to stop test.
Manual revision 016 Appendix III: Command Summary CATEGORY COMMAND DCal Coefficients (F=floating point number; S=string with no spaces) Dates shown are when calibrations were performed. Calibration coefficients are initially factory-set and should agree with Calibration Certificates shipped with FastCAT.
Manual revision 016 Appendix IV: AF24173 Anti-Foulant Device SBE 49 Appendix IV: AF24173 Anti-Foulant Device AF24173 Anti-Foulant Devices supplied for user replacement are supplied in polyethylene bags displaying the following label: AF24173 ANTI-FOULANT DEVICE FOR USE ONLY IN SEA-BIRD ELECTRONICS' CONDUCTIVITY SENSORS TO CONTROL THE GROWTH OF AQUATIC ORGANISMS WITHIN ELECTRONIC CONDUCTIVITY SENSORS. ACTIVE INGREDIENT: Bis(tributyltin) oxide…………..…………………………..... OTHER INGREDIENTS: ……………………………….....
Manual revision 016 Appendix IV: AF24173 Anti-Foulant Device SBE 49 AF24173 Anti-Foulant Device FOR USE ONLY IN SEA-BIRD ELECTRONICS’ CONDUCTIVITY SENSORS TO CONTROL THE GROWTH OF AQUATIC ORGANISMS WITHIN ELECTRONIC CONDUCTIVITY SENSORS. ACTIVE INGREDIENT: Bis(tributyltin) oxide…………..…………………………..... 53.0% OTHER INGREDIENTS: ………………………………..... 47.0% Total………………………………………………………..... 100.0% DANGER See Precautionary Statements for additional information.
Manual revision 016 Appendix IV: AF24173 Anti-Foulant Device SBE 49 PRECAUTIONARY STATEMENTS HAZARD TO HUMANS AND DOMESTIC ANIMALS DANGER Corrosive - Causes irreversible eye damage and skin burns. Harmful if swallowed. Harmful if absorbed through the skin or inhaled. Prolonged or frequently repeated contact may cause allergic reactions in some individuals. Wash thoroughly with soap and water after handling.
Manual revision 016 Appendix IV: AF24173 Anti-Foulant Device STORAGE AND DISPOSAL PESTICIDE STORAGE: Store in original container in a cool, dry place. Prevent exposure to heat or flame. Do not store near acids or oxidizers. Keep container tightly closed. PESTICIDE SPILL PROCEDURE: In case of a spill, absorb spills with absorbent material. Put saturated absorbent material to a labeled container for treatment or disposal.
Manual revision 016 Appendix V: Real-Time Data Correction Algorithms SBE 49 Appendix V: Real-Time Data Correction Algorithms Note: Real-time processing recommendations are summarized in Real-Time Data Corrections in Section 4: Deploying and Operating FastCAT. Aligning, filtering, and correcting for conductivity cell thermal mass in postprocessing allows you to make adjustments to the measured data before calculating derived parameters.
Manual revision 016 Appendix V: Real-Time Data Correction Algorithms SBE 49 The best diagnostic of proper alignment is the elimination of salinity spikes that coincide with very sharp temperature steps. Some experimentation with different advances is required to find the best alignment. To determine the best alignment for your FastCAT, plot 10 meters of uncorrected temperature and salinity data at a depth that contains a very sharp temperature step.
Manual revision 016 Appendix V: Real-Time Data Correction Algorithms SBE 49 Filtering Data Filtering smoothes the data, to match the temperature and conductivity sensor time constants. In post-processing, Sea-Bird recommends using a low-pass filter (Filter module in SBE Data Processing) on recorded FastCAT data, with a time constant of 0.085 seconds for both temperature and conductivity.
Manual revision 016 Appendix VI: Replacement Parts SBE 49 Appendix VI: Replacement Parts Part Number Part Application Description Quantity in FastCAT 801385 4-pin RMG-4FS to 9-pin DB-9S I/O cable with power leads, 2.4 m (8 ft) From FastCAT to computer/ controller and power supply 1 17046.
Manual revision 016 Appendix VI: Replacement Parts SBE 49 Continued from previous page Part Number Part Application Description Quantity in FastCAT 60037 Assorted o-rings and hardware, including: • 231408 Exhaust tee (for slow profiling applications) • 30132 Machine screw, 4-40 x ¾ FH SS (secure exhaust tee to sensor guard) • 31081 Machine screw, 4-40 x ½ SHSS (retaining rod screw) • 30389 Cable tie, 4 inch (secure tubing to exhaust tee) • 30857 Parker, 2-033E515-70 (o-rings for both end caps) Spar
Manual revision 016 Appendix VI: Replacement Parts SBE 49 Continued from previous page 50312 Anti-foulant device inline cap/cup assembly 71 Assorted parts, including: • 233564 In-line Anti-Foulant black cup (for AF24173 Anti-Foulant Device) • 233565 In-line Anti-Foulant black cap (seals AF24173 Anti-Foulant Device in cup) • 30072 O-ring, 2-017 N674-70 (seal between cap and cup) • 31629 Black Tubing, 3/8” ID x 5/8” OD (plumbing) • 30389 Cable Tie, 4”, Richco (secures plumbing to cap, cup, and CTD barb
Manual revision 016 Index SBE 49 Appendix VI: Manual Revision History Manual Version 002 003 004 005 006 007 008 Date 10/01 12/02 01/03 01/03 03/03 08/03 07/04 Description • • • • • • • • • • • • • • • • • • • • • 009 08/05 • • • • • • • 010 011 07/06 05/07 • • • • • • • • • • • Continued on next page Initial release production units. Add information on pressure output format in decibars. OutputFormat=2&3: Add information that leading 0’s suppressed.
Manual revision 016 Index SBE 49 Continued from previous page 012 08/08 • Manufacturing change: note in electronics disassembly/reassembly that for plastic housing, 2 phillips-head screws at connector end cap end & 3 at sensor end cap end replaced with hex screws. 9/64” allen wrench shipped with 49. • Change pressure stability specifications to per year instead of per month. • Update connector maintenance to be consistent with application note 57. • Add information that POffset is in decibars.
Manual revision 016 Index SBE 49 Index . E .con file · 41 .hex files editing · 46 .
Manual revision 016 Index SBE 49 S T Sampling autonomous · 22 polled · 21 Sampling commands · 30, 32 Sampling modes · 20 Saterm main screen · 16 SBE Data Processing · 10, 15, 43, 44 Seasave · 10, 15, 41 Seasoft · 10, 15 Seaterm · 10, 15, 16 toolbar buttons · 17 Sensors · 11 Setup commands · 29 Software · 10 installation · 15 Specifications · 11 Status command · 28 Storage · 48 Straight exhaust · 12, 37 Super O-Lube · 57 System description · 8 Tee exhaust · 12, 37 Test power and communications · 15 set
