Sea-Bird Electronics SBE 38 User Manual

SBE 38 Digital Oceanographic Thermometer With RS-232 or optional RS-485 Interface User’s Manual Sea-Bird Electronics, Inc. 1808 136th Pla

Section 3: Preparing SBE 38 for Deployment 10Test 1. Double click on SeaTerm.exe. If this is the first time the program is used, the setup dial

Section 3: Preparing SBE 38 for Deployment 11Following are the Toolbar buttons applicable to the SBE 38: Toolbar Button Description Equivalent C

Section 3: Preparing SBE 38 for Deployment 124. In the Communications menu, select Options / Cycle baud when connecting. 5. Click Connect on

Section 4: Deploying and Operating RS-232 SBE 38 13Section 4: Deploying and Operating RS-232 SBE 38 This section includes: • system operation

Section 4: Deploying and Operating RS-232 SBE 38 14Continuous Sampling The SBE 38 continuously samples and transmits real-time data. Sampling

Section 4: Deploying and Operating RS-232 SBE 38 15Power and Cable Length There are two issues to consider: • Limiting the IR loss to 1 volt; h

Section 4: Deploying and Operating RS-232 SBE 38 16Command Descriptions This section describes commands and provides sample outputs. See Appendi

Section 4: Deploying and Operating RS-232 SBE 38 17Sampling Commands These commands are used to request data from the SBE 38. For all sampling

Section 4: Deploying and Operating RS-232 SBE 38 18Data Formats Converted Data (Format=C) ttt.ttt where: t = temperature (degrees Celsius, ITS-9

Section 4: Deploying and Operating RS-232 SBE 38 19Recovery 1. Use one of the following sequences to stop sampling: • Press Enter key to get

2 Limited Liability Statement Extreme care should be exercised when using or servicing this equipment. It should be used or serviced only by personn

Section 5: Routine Maintenance and Calibration 20Section 5: Routine Maintenance and Calibration This section reviews corrosion precautions, con

Section 5: Routine Maintenance and Calibration 21Sensor Calibration Sea-Bird sensors are calibrated by subjecting them to known physical conditi

Glossary 22Glossary PCB – Printed Circuit Board. SBE 38 – High-accuracy digital oceanographic thermometer. SBE Data Processing – Sea-Bird’s Win

Appendix I: Functional Description 23Appendix I: Functional Description Sensor Interface Temperature is acquired by applying an AC excitation t

Appendix II: Electronics Disassembly/Reassembly 24Appendix II: Electronics Disassembly/Reassembly 1. Remove the titanium end cap and electronic

Appendix III: RS-485 Interface 25Appendix III: RS-485 Interface Operation Description Commands can be directed to one SBE 38 or globally to all

Appendix III: RS-485 Interface 26Command Descriptions RS-485 Commands Global Commands Global commands are recognized by all SBE 38s attached t

Appendix III: RS-485 Interface 27ID Commands Only one SBE 38 can be online when sending these commands. ID? Display SBE 38 ID (ID = ii, where

Appendix III: RS-485 Interface 28Wiring When configured with the RS-485 interface, the SBE 38 can transmit data over up to 1200 meters of 26 AWG

Appendix IV: Command Summary 29Appendix IV: Command Summary CATEGORY COMMAND DESCRIPTION Status DS Display status and setup parameters. Interfac

Table of Contents 3Table of Contents Section 1: Introduction...4

Appendix V: Replacement Parts 30Appendix V: Replacement Parts Part Number Part Application Description Quantity in SBE 38 231361 Plastic temper

Index 31Index A About Sea-Bird · 4 B Baud rate · 14, 16 C Cable length · 14, 15 Calibration · 21 Calibration coefficients · 17 Command summary · 29

Section 1: Introduction 4Section 1: Introduction This section includes a Quick Start procedure, and photos of a standard SBE 38 shipment. Abo

Section 1: Introduction 5Unpacking SBE 38 Shown below is a typical SBE 38 shipment. Soft

Section 2: Description of SBE 38 6Section 2: Description of SBE 38 This section describes the functions and features of the SBE 38, including sp

Section 2: Description of SBE 38 7Specifications Measurement Range -5 to +35 °C Initial Accuracy 1 ± 0.001 °C (1 mK) Typical Stability 0.001 °C

Section 2: Description of SBE 38 8Dimensions and End Cap Connector The SBE 38 is available with a 4-pin XSG-4-BCL-HP-SS or optional MCBH-4MP (W

Section 3: Preparing SBE 38 for Deployment 9Section 3: Preparing SBE 38 for Deployment This section describes the software installation and the