Sea-Bird Electronics SBE 38 Page 8 User Manual Download

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SBE 38 Digital

Oceanographic

Thermometer

With RS-232 or optional RS-485 Interface

Note: NEW ADDRESS

as of January 2010

User’s Manual

Sea-Bird Electronics, Inc.

13431 NE 20

Street

Bellevue, Washington 98005 USA

Telephone: +1 425-643-9866

Fax: +1 425-643-9954

E-mail: [email protected]

Manual Version #013, 03-23-11

Website: www.seabird.com

Firmware Version 1.4 and later

Summary of Contents for SBE 38

Page 1: ...Sea Bird Electronics Inc 13431 NE 20th Street Bellevue Washington 98005 USA Tel 425 643 9866 Fax 425 643 9954 SBE 38 Digital Thermometer User Manual Version 013 ...

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Page 3: ... Conformity 4 SBE 38 Manual Version 013 5 SBE 38 Reference Sheet Version 004 38 Calibration Certificates 40 SBE 38 Specification Sheet 45 Appnote 42ITS 90 Temperature Scale 47 Appnote 56Interfacing to RS 485 Sensors 48 Appnote 57Connector Care 50 Appnote 68USB Ports 53 Appnote 71Desiccant Use and Regeneration 54 Dwg 32277ACable Assy RMG 4FS to DB 9S with Power Leads 60 dwg 32604B Cable Assy RMG 4F...

Page 4: ...Manual Generation Date 26 August 2011 1 ...

Page 5: ...em SEA BIRD ELECTRONICS INC has no way of controlling the use of this equipment or of choosing the personnel to operate it and therefore cannot take steps to comply with laws pertaining to product liability including laws which impose a duty to warn the user of any dangers involved in operating this equipment Therefore acceptance of this system by the customer shall be conclusively deemed to inclu...

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Page 8: ... Note NEW ADDRESS as of January 2010 User s Manual Sea Bird Electronics Inc 13431 NE 20th Street Bellevue Washington 98005 USA Telephone 1 425 643 9866 Fax 1 425 643 9954 E mail seabird seabird com Manual Version 013 03 23 11 Website www seabird com Firmware Version 1 4 and later 5 ...

Page 9: ...D ELECTRONICS INC has no way of controlling the use of this equipment or of choosing the personnel to operate it and therefore cannot take steps to comply with laws pertaining to product liability including laws which impose a duty to warn the user of any dangers involved in operating this equipment Therefore acceptance of this system by the customer shall be conclusively deemed to include a coven...

Page 10: ...d Rate Cable Length and Power 15 Command Descriptions 17 Data Formats 19 Deployment 19 Recovery 20 Section 5 Routine Maintenance and Calibration 21 Corrosion Precautions 21 Connector Mating and Maintenance 21 Sensor Calibration 22 Glossary 23 Appendix I Functional Description 24 Sensor Interface 24 Settings 24 Appendix II Electronics Disassembly Reassembly 25 Appendix III RS 485 Interface 26 Opera...

Page 11: ...andard Time 1600 to 0100 Universal Time in winter and 0800 to 1700 Pacific Daylight Time 1500 to 0000 Universal Time the rest of the year Quick Start Follow these steps to get a Quick Start using the SBE 38 with a standard RS 232 interface The manual provides step by step details for performing each task 1 Test Power and Communications see Section 3 Preparing SBE 38 for Deployment 2 Deploy the SBE...

Page 12: ... 38 5 Unpacking SBE 38 Shown below is a typical SBE 38 shipment Software and Electronic Copies of Software Manuals and User Manual SBE 38 I O Cable with 9V battery snap connector and 9V battery User Manual SBE 38 Digital Oceanographic Thermometer 9 ...

Page 13: ...ds its EEPROM which includes calibration coefficients and other setup information As programmed the SBE 38 samples and transmits temperature continuously or waits for a command to begin sampling Note that for RS 485 applications with several sensors sharing one pair of wires the SBE 38 cannot sample continuously The SBE 38 is frequently integrated as a remote temperature sensor with one of our the...

Page 14: ... number of A D cycles per sample Interval between samples seconds 0 133 NAvg 0 339 External Power RS 232 standard 8 15 VDC at 15 milliamps average RS 485 half duplex optional 8 15 VDC at 10 milliamps average Materials Titanium pressure case rated at 10 500 meters 34 400 feet Weight In water 0 5 kg 1 2 lbs In air 0 9 kg 2 0 lbs Notes 1 NIST traceable calibration applying over the entire range 2 Tim...

Page 15: ... Dimensions and End Cap Connector The SBE 38 is available with a 4 pin XSG 4 BCL HP SS or optional MCBH 4MP WB TI 3 8 length base 20 thread wet pluggable external connector Pin Signal 1 Common 2 RS 232 Receive or RS 485 A 3 RS 232 Transmit or RS 485 B 4 Power 12 ...

Page 16: ...g sleeve and dummy plug from bulkhead connector A By hand unscrew the locking sleeve from the SBE 38 s bulkhead connector If you must use a wrench or pliers be careful not to loosen the bulkhead connector instead of the locking sleeve B Remove the dummy plug from the SBE 38 s bulkhead connector by pulling the plug firmly away from the connector 2 Install the Sea Bird I O cable on the SBE 38 XSG Co...

Page 17: ... area from the available commands for the instrument Note that the instrument must be awake for it to respond to a command use Connect on the Toolbar to wake up the instrument Status bar Provides status information To display or hide the Status bar select View Status bar in the View menu Note See SEATERM s help files Note There is at least one way and as many as three ways to enter a command Manua...

Page 18: ...alog box looks like this Make the selections in the Configuration Options dialog box COMM Port COM 1 through COM 10 as applicable Baud Rate 9600 documented on Configuration Sheet Data Bits 8 Parity None Mode RS 232 Full Duplex or RS 485 Half Duplex Click OK to save the settings Computer COM port baud rate data bits and parity for communication between computer and SBE 38 Interface for communicatio...

Page 19: ...nfiguration Options dialog box Note that the baud rate s factory setting is documented on the Configuration Sheet in this manual Check cabling between the computer and the SBE 38 6 Display SBE 38 status information by clicking Status on the Toolbar The display looks like this SBE 38 V 1 4 S N 0090 NAVG 1 Not sampling data Automatically start sampling on power up Default interface is RS 232 7 Comma...

Page 20: ...E 38 with RS 232 Interface Note that the SBE 38 s response to each command is not shown in the examples Review the sampling modes and the commands described in Command Descriptions before setting up your system Polled Sampling The SBE 38 takes one sample of data on command Transmission of data to the computer is dependent on the particular command used Example user input in bold Apply power and es...

Page 21: ...ower and establish communications Send command to start sampling continuously outputting real time data When desired send command to stop sampling Apply power and then click Connect on Toolbar S GO S STOP You may need to send Stop several times to interrupt sampling Example 2 AutoRun Y Apply power and establish communication Set up to average 4 measurements per sample and output converted data wit...

Page 22: ...common wire resistance is more than 1 volt because the difference in ground potential of the SBE 38 and ground controller prevents the SBE 38 from transmitting real time data V limit 1 volt IR limit Where I current required by SBE 38 15 mA for RS 232 10 mA for RS 485 Maximum cable length R limit wire resistance per foot Notes Baud rate is set with Baud see Command Descriptions in this section For ...

Page 23: ... volts would still provide enough power to SBE 38 V IR 0 5 volts 0 015 Amps 0 0064 ohms foot cable length Cable length 5208 ft 1588 meters Note that 1588 meters 800 meters maximum distance SBE 38 can transmit data at 1200 baud so IR drop in power is not controlling factor for this example Example 2 Same as above but there are 4 SBE 38s powered from the same power supply V IR 0 5 volts 0 015 Amps 4...

Page 24: ... converted temperature C Applicable only if Format C NAvg x x number of A D cycles to average per sample 1 127 Time between samples seconds 0 133 NAvg 0 339 Time between samples for continuous sampling minimum time required for each polled sample AutoRun x x N Wait for a command when power is applied x Y Start continuous sampling automatically when power is applied Example user input in bold S DS ...

Page 25: ... TCalDate S S Temperature calibration date A0 F F Temperature A0 A1 F F Temperature A1 A2 F F Temperature A2 A3 F F Temperature A3 Slope F F Temperature slope default 1 0 Offset F F Temperature offset C default 0 0 Example Display coefficients for SBE 38 user input in bold S DC SBE 38 V 1 4 S N 0090 Cal Date 08 apr 96 A0 9 420702e 05 A1 2 937924e 04 A2 3 739471e 06 A3 1 909551e 07 Slope 1 000000 O...

Page 26: ...nector aligning the pins C Place the locking sleeve over the connector Tighten the locking sleeve finger tight only Do not overtighten the locking sleeve and do not use a wrench or pliers 2 Mount the SBE 38 3 Verify that the hardware and external fittings are secure 4 Use one of the following sequences to start sampling If AutoRun N Send Go to start sampling continuously now or TS or TH to take a ...

Page 27: ... depths and is subsequently raised to the surface water may be trapped at the pressure at which it entered the housing presenting a danger if the housing is opened before relieving the internal pressure Instances of such flooding are rare However a housing that floods at 5000 meters depth holds an internal pressure of more than 7000 psia and has the potential to eject the end cap with lethal force...

Page 28: ...ect connectors that are unmated for signs of corrosion product around the pins and for cuts nicks or other flaws that may compromise the seal When remating 1 Lightly lubricate the inside of the cable connector with silicone grease DC 4 or equivalent 2 XSG Connector Install the cable connector aligning the raised bump on the side of the plug cable connector with the large pin pin 1 ground on the SB...

Page 29: ...e environmental conditions of use and unlike platinum or copper elements the thermistor is insensitive to shock Sea Bird s Calibration Methodology The SBE 38 is calibrated in Sea Bird s state of the art calibration laboratory which maintains primary temperature standards water triple point TPW and gallium melting point GaMP cells ITS 90 certified and standards grade platinum resistance thermometer...

Page 30: ...aw data Seasave V7 can be used to view and process the entire data stream including data from the SBE 38 when the SBE 38 is integrated with one of the following SBE 21 or 45 thermosalinograph SBE 16plus 16plus V2 or 16plus IM V2 C T Recorder SBE 19plus V2 CTD Profiler SEASOFT V2 Sea Bird s complete Win 2000 XP software package which includes software for communication real time data acquisition an...

Page 31: ...ration coefficients that are stored in EEPROM The number of acquisition cycles raw counts averaged per measurement is user programmable NAvg see Section 4 Deploying and Operating RS 232 SBE 38 Increasing the number of cycles per measurement increases the time to acquire the measurement and the interval between measurements while reducing the RMS temperature noise from the sensor The interval betwe...

Page 32: ...s A Remove any water from the O ring and mating surfaces in the housing with a lint free cloth or tissue Inspect the O ring and mating surfaces for dirt nicks and cuts Clean as necessary Apply a light coat of O ring lubricant Parker Super O Lube to O ring and mating surfaces B Carefully fit the electronics into the housing C Screw the end cap into the housing Note Before delivery a desiccant bag i...

Page 33: ...ng sequence a number of times user input in bold Apply power and click Connect on Toolbar to wake up all SBE 38s S IDREQ Y command to require ID prefix S 01NAVG 40 set number of measurements per sample to 40 for SBE 38 with ID 01 S 02NAVG 40 set number of measurements per sample to 40 for SBE 38 with ID 02 S 01FORMAT C set output format to converted data for SBE 38 with ID 01 S 02FORMAT C set outp...

Page 34: ...f a prefix does not apply to Global Get Data or ID commands iiIDReq N Do not precede commands to individual SBE 38s with ii Use this setting for systems with only 1 SBE 38 Note For reliable operation all commands may need to be preceded with two characters to clear the buffers Example status command for SBE 38 with ID 01 S 01DS Note GData and AData perform the same function in the SBE 38 Both are ...

Page 35: ...ime data at the same time Therefore do not set AutoRun Y start sampling continuously when power is applied for a system with more than one RS 485 instrument on a pair of wires Similarly do not attempt to send Go to multiple SBE 38s on a pair of wires as the system cannot transmit a command to one instrument while another instrument is transmitting real time data If planning to sample continuously ...

Page 36: ...ation than standard RS 485 ICs Conversion of RS 232 to RS 485 or RS 485 to RS 232 Sea Bird supplies the SBE 38 with the correct jumper settings on the Printed Circuit Board PCB for your ordered configuration standard RS 232 or optional RS 485 If desired you can modify the jumper settings to change the configuration Wiring connect Pin 2 black to RS 232 RX RS 485 A Pin 3 green to RS 232 TX RS 485 B ...

Page 37: ...n buffer SH Transmit data that was held in buffer SL Transmit data from last sample from buffer SLT Transmit data from last sample from buffer and then take 1 new sample and hold data in buffer Coefficients F floating point number S string with no spaces Date shown is when calibration was performed Calibration coefficients are initially factory set and should agree with Calibration Certificate shi...

Page 38: ...t seal 1 801376 4 pin RMG 4FS to 9 pin DB 9S I O cable with battery snap 2 4 m 8 ft long From SBE 38 XSG to computer 1 801263 4 pin MCIL 4FS to 9 pin DB 9S I O cable with battery snap 2 4 m 8 ft long From SBE 38 wet pluggable to computer 1 171888 25 pin DB 25S to 9 pin DB 9P cable adapter For use with computer with DB 25 connector 1 17046 1 4 pin RMG 4SD LP dummy plug with locking sleeve For SBE 3...

Page 39: ...d more information to Recovery Warning 010 01 09 PCB changed connections and jumpers changed for conversion between RS 232 RS 485 Update for V2 Seacats integration with 16plus V2 16plus IM V2 19plus V2 Add information about compatibility with Vista Remove information about DOS software Update connector maintenance information for consistency with application note 57 011 04 09 Change spec for curre...

Page 40: ...cription 24 G Get data 27 Global commands 27 Glossary 23 I ID commands 27 28 L Limited liability statement 2 M Maintenance 21 Manual revision history 32 Modes See Sampling modes O Operation description 26 P Parts replacement 31 Polled sampling 13 Power 15 Q Quick start 4 R Real time data acquisition 9 Recovery 20 Replacement parts 31 Revision history 32 RS 232 13 17 conversion to RS 485 29 RS 485 ...

Page 41: ...g the SBE 38 averages NAvg A D cycles per sample It outputs converted C or raw counts data depending on Format For converted data number of digits after the decimal place is defined by Digits Communication Setup Parameters 1 Double click on seaterm exe 2 Once main screen appears in Configure menu select SBE 38 Input in dialog box Serial Port COM1 through COM10 are available Baud Rate 9600 or other...

Page 42: ...ve commands with ii ii 0 99 to direct command to particular SBE 38 If iiIDReq N do not precede above commands with ii applies only for a system with 1 SBE 38 For reliable operation all commands may need to be preceded with two characters to clear buffers RS 485 interface cannot accommodate multiple instruments transmitting real time data at same time Therefore do not set AutoRun Y start sampling c...

Page 43: ...CALIBRATION SHEETS SBE 38 Configuration S N 0639 1 SBE 38 Pressure Test Certificate S N 0639 2 SBE 38 Temperature Calibration S N 0639 3 4 40 ...

Page 44: ...S m Baud Rate 9600 8 data bits no parity Zero Conductivity 2491 031 Hz Maximum Depth 7000 meters SBE38 Digital Oceanographic Thermometer CAUTION The maximum deployment depth is limited by the pressure housing to 10500m Maximum Depth 10500 meters Baud Rate 4800 Interface Type RS 232 Firmware Version 1 4 Serial Number 3865557 0639 Instrument Configuration 41 ...

Page 45: ...ription SBE 38 Digital Thermometer SBE Sensor Information Pressure Sensor Information Model Number 38 Sensor Type None Sensor Serial Number None Sensor Rating 0 Pressure Test Protocol Low Pressure Test PSI Held For Minutes High Pressure Test PSI Held For Minutes 40 15 10000 15 Passed Test Tested By VG Customer Name EMS FRANCE Phone 425 643 9866 FAX 425 643 9954 Email seabird seabird com 42 ...

Page 46: ...1 50010 832868 9 1 50009 0 00001 0 99990 742792 8 0 99990 0 00000 4 49990 634662 3 4 49988 0 00002 7 99990 544072 3 7 99989 0 00001 11 49990 467916 4 11 49991 0 00001 14 99990 403680 5 14 99992 0 00002 18 49990 349322 8 18 49990 0 00000 21 99990 303177 6 21 99993 0 00003 25 49990 263885 0 25 49986 0 00004 28 99990 230325 5 28 99987 0 00003 32 49990 201579 3 32 49993 0 00003 Temperature ITS 90 1 a0...

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Page 48: ...to the interface RS 485 half duplex with one SBE 38 connected to the interface RS 485 half duplex with several RS 485 sensors sharing one pair of wires On power up the SBE 38 reads its EEPROM which includes calibration coefficients and other setup information As programmed the SBE 38 samples and transmits temperature continuously or waits for a command For RS 485 applications with several sensors ...

Page 49: ...0 500 meters 34 400 feet Weight In Air 0 9 kg 2 0 lbs In Water 0 5 kg 1 2 lbs Range 5 to 35 C Initial Accuracy1 0 001 C 1 mK Resolution 0 00025 C 0 25 mK Stability 0 001 C 1 mK in six months certified Response Time2 500 milliseconds Self heating Error less than 200 μK 1 NIST traceable calibration applying over the entire range 2 Time to reach 63 of final value following a step change in temperatur...

Page 50: ...en selecting temperature as a display output variable you must select which standard T90 or T68 is to be used to compute temperature SEASOFT recognizes whether you have entered T90 or T68 coefficients in the configuration con or xmlcon file and performs the calculations accordingly depending on which coefficients were used and which display variable type is selected If g h i j F0 coefficients T90 ...

Page 51: ...stall the USB RS 485 Adapter 3 Configure the USB port in your PC directions are for a PC running Windows XP A Right click on My Computer and select Properties B In the System Properties dialog box click on the Hardware tab Click the Device Manager button C In the Device Manager window double click on Ports Double click on the desired USB port D In the Port Properties dialog box click the Port Sett...

Page 52: ...er with our instruments and verified compatibility National Instruments www ni com AT 485 2 PCI 485 2 Follow this procedure to use the AT 485 2 or PCI 485 2 Interface Card 1 Install the RS 485 driver software provided with Interface Card on your PC before installing the Interface Card 2 Install the RS 485 Interface Card 3 Configure the RS 485 Interface Card in your PC directions are for a PC runni...

Page 53: ...f your yearly equipment maintenance Follow this procedure 1 Carefully clean the bulkhead connector and the inside of the mating cable s boot or the dummy plug with a Kim wipe Remove all grease hair dirt and other contamination 2 Inspect the connector and cable boot or dummy plug A Inspect the pins on the bulkhead connector for signs of corrosion The pins should be bright and shiny with no discolor...

Page 54: ...e boot or dummy plug with the large pin on the bulkhead connector and align the sockets with the pins Optional wet pluggable MCBH connectors only Align the non conducting guide pin and the conducting pins with the mating sockets Do not twist the cable boot or dummy plug on the bulkhead connector twisting can lead to bent pins which will soon break 5 Push the cable boot or dummy plug all the way on...

Page 55: ...y plug may be hard to install and remove Removing a Frozen Cable Boot or Dummy Plug 1 Wrap the cable boot or dummy plug with a washrag or other cloth 2 Pour hot water on the cloth and let it sit for a minute or two The cable boot or dummy plug should thaw and become flexible enough to be removed Installing a Standard XSG AG Cable or Dummy Plug When possible install cables and dummy plugs in warm e...

Page 56: ...ave had several reports from customers that they could not communicate with their instrument using a laptop computer and this adapter Keyspan www keyspan com USB 4 Port Serial Adapter part USA 49WLC replacing part USA 49W Note We have one report from a customer that he could not communicate with his instrument using a notebook computer and this adapter He was able to successfully communicate with ...

Page 57: ... possible through the bulkhead Therefore opening the battery compartment to replace the batteries does not expose the electronics you do not need to install a new desiccant bag in the electronics compartment each time you open the battery compartment For these instruments install a new desiccant bag if you open the electronics compartment to access the printed circuit boards For the SBE 39 39 IM a...

Page 58: ...sed infrared element type oven shield the bags from direct exposure to the heating element giving the closest bags a minimum of 40 6 cm 16 inches clearance from the heat shield Excessive surface film temperature due to infrared radiation will cause the Tyvek material to melt and or the seals to fail Seal failure may also occur if the temperature is allowed to increase rapidly This is due to the fa...

Page 59: ...3231 67 4 99 PEL 20 RESPIRABLE TLV 5 LIMIT NONE HAZARD IRRITANT Synthetic amorphous silica is not to be confused with crystalline silica such as quartz cristobalite or tridymite or with diatomaceous earth or other naturally occurring forms of amorphous silica that frequently contain crystalline forms This product is in granular form and packed in bags for use as a desiccant Therefore no exposure t...

Page 60: ...re SECTION V HEALTH HAZARD DATA Health hazards may arise from inhalation ingestion and or contact with the skin and or eyes Ingestion may result in damage to throat and esophagus and or gastrointestinal disorders Inhalation may cause burning to the upper respiratory tract and or temporary or permanent lung damage Prolonged or repeated contact with the skin in absence of proper hygiene may cause dr...

Page 61: ... and or wet methods of cleanup are preferred Place in appropriate containers for disposal keeping airborne particulates at a minimum SECTION VIII SPECIAL PROTECTION INFORMATION Respiratory Protection Provide a NIOSH MSHA jointly approved respirator in the absence of proper environmental control Contact your safety equipment supplier for proper mask type Ventilation Provide general and or local exh...

Page 62: ...es no warranties expressed or implied as to the accuracy or adequacy of the information contained herein or the results to be obtained from the use thereof This information is offered solely for the user s consideration investigation and verification Since the use and conditions of use of this information and the material described herein are not within the control of United Desiccants United Desi...

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Page 65: ...e pH sensor electrode used in the SBE 18 pH sensor and SBE 27 pH ORP sensor has a limited design life caused by depletion of their chemical constituents during normal storage and use and is covered under warranty for the first 90 days only Other components of the sensor housing electronics etc are covered for 5 years 3 Instruments or sensors manufactured by other companies are warranted only to th...

Page 66: ...s based on our judgment and discretion We will not honor a warranty claim if in our opinion the instrument assembly or part has been damaged by accident mishandled altered or repaired by the customer where such treatment has affected its performance or reliability 6 For example if the CTD pressure housing is opened a PC board is replaced the housing is resealed and then it floods on deployment we ...

Page 67: ...m SeatermAF SeatermV2 Plot39 and Deployment Endurance Calculator SEASOFT for Waves Win32 SEASOFT DOS and SEASOFT for Waves DOS SOFTWARE WARRANTY Sea Bird Electronics expressly disclaims any warranty for software Software and any related documentation is provided as is without warranty of any kind either expressed or implied including and without limitation the implied warranties or merchantability...

Page 68: ...Yes specify serial numbers if not applicable to all instruments in shipment CONTACT INFORMATION Your Name Institution Company Shipping Delivery address for packages Phone Fax E mail SERVICE INFORMATION Date Shipped Sea Bird Model Numbers i e SBE 37 SM etc Quantity Serial Numbers Special Instructions for example if specific services are required for some instruments i e if 10 instruments need calib...

Page 69: ...ics see address above If you choose this option we recommend shipping via UPS FedEx or DHL Their service is door to door including customs clearance It is not necessary to notify our customs agent MTI Worldwide if you ship using a courier service E mail the airway bill tracking number to seabird seabird com when your shipment is en route Include your RMA number in the e mail For All International ...

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