Extech Instruments SD900 User Manual
USER MANUAL
3-Channel DC Current Datalogger
Model SD900
Additional User Manual Translations available at www.extech.com
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Table of Contents
1. INTRODUCTION 3
2. DESCRIPTIONS 4
3. OPERATION 5
Power 5
Connecting Current Cables 5
Datalogging 5
Time/Date/Sample Rate Check 6
SD Card Data Structure 6
Transferring Data to a PC 7
Advanced Settings 7
System RESET 8
RS232 Interface 8
Backlight 8
4. MAINTENANCE 9
Battery Replacement 9
Cleaning and Storage 9
5. SPECIFICATIONS 10
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1. Introduction
Thank you for selecting the Extech SD900 3-Channel Current Datalogger.
The SD900 is a three channel 0 to 20mA DC current loop monitor and data logger. Data is
stored at a selectable rate and stored for easy export to spreadsheet software.
This device is shipped fully tested and calibrated and, with proper use, will provide years of
reliable service. Please visit our website (www.extech.com) to check for the latest version of
this User Guide, Product Updates, Product Registration, and Customer Support.
Features
Triple LCD simultaneously displays three (0 to 20mA) current channels
Datalogger date/time stamps and stores readings on an SD card in Excel® format for easy
transfer to a PC
Selectable data sampling rate: 1, 2, 5, 10, 30, 60, 120, 300, 600 seconds, auto
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