Instruction manual

CS650 and CS655 Water Content

Reflectometers

1. Introduction

The CS650 and CS655 are multiparameter smart sensors that use innovative

techniques to monitor soil volumetric water content, bulk electrical

conductivity, and temperature. They output an SDI-12 signal that many of our

dataloggers can measure.

The CS650 has 30 cm length rods, whereas the CS655 has 12 cm length rods.

This manual uses CS650 to reference model numbers CS650 and CS655.

Unless specifically stated otherwise, information in the manual applies equally

to both models.

This manual provides information only for CRBasic dataloggers.

It is also compatible with most of our retired Edlog dataloggers.

For Edlog datalogger support, see an older manual at

www.campbellsci.com/old-manuals or contact a Campbell

Scientific application engineer for assistance.

2. Cautionary Statements

• READ AND UNDERSTAND the Precautions section at the front of this

manual.

• Although the CS650 is rugged, it should be handled as precision scientific

instrument.

• External RF sources can affect the probe’s operation. Therefore, the probe

should be located away from significant sources of RF such as ac power

lines and motors.

3. Initial Inspection

• Upon receipt of the CS650, inspect the packaging and contents for

damage. File damage claims with the shipping company.

• The model number and cable length are printed on a label at the

connection end of the cable. Check this information against the shipping

documents to ensure the expected product and cable length are received.

NOTE