Campbell Scientific OBS3 User Manual
INSTRUCTION MANUAL
Interfacing the
OBS-3 Turbidity Monitor with
Campbell Scientific Dataloggers
10/05
Copyright (c) 1998-2005
Campbell Scientific, Inc.
Disclaimer
This manual concerns interfacing another manufacturer’s product with our
dataloggers. We will attempt to provide accurate and up-to-date information in
this manual. However, changes to another manufacturer’s product are beyond
our control. Such changes may affect hookup, programming, and even safe
use of the product. Also, this manual should be used in conjunction with the
original manufacturer’s technical reference documentation. See their
documentation for information concerning product use and safety. If you
encounter out-of-date, incomplete, or incorrect information, please contact us
so we can attempt to remedy the situation.
Because the product is manufactured by another company, their warranty
applies. Contact the original manufacturer for warranty information, repairs,
and recalibrations.
Our website (http://www.campbellsci.com) lists the updated manuals.
OBS-3 Table of Contents
PDF viewers note: These page numbers refer to the printed version of this document. Use
the Adobe Acrobat® bookmarks tab for links to specific sections.
1. Connections.................................................................1
2. Programming ...............................................................3
2.1 Using Short Cut........................................................................................3
2.2 Using Edlog or the Keyboard/Display......................................................3
2.3 Edlog Program Example...........................................................................3
2.4 CRBasic Program Example...................................................................... 5
3. Maintenance and Troubleshooting ............................5
Figures
1. Wiring Diagram of OBS-3 Using Datalogger’s Switched 12 V.................1
2. Wiring Diagram of OBS-3 without Using Switched 12 V.........................2
3. Wiring Diagram for Connecting an OBS-3 to an External Relay
and a Datalogger....................................................................................2
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