Model 109SS Temperature Probe

3.Installation and Wiring

3.1Burial

The 109SS is suitable for shallow burial only. It should be placed horizontally at the desired depth to avoid thermal conduction from the surface to the thermistor. Placement of the cable inside a rugged conduit may be advisable for long cable runs, especially in locations subject to digging, mowing, traffic, use of power tools, or lightning strikes.

3.2 Submersion

The 109SS can be submerged to 50 ft. Please note that the 109SS is not weighted. Therefore, the installer should either add a weighting system or secure the probe to a fixed or submerged object such as a piling.

4. Wiring

Connections to Campbell Scientific dataloggers are given in Table 4-1. Temperature is measured with one Single-Ended input channel and a Voltage Excitation channel. Multiple probes can be connected to the same excitation channel (the number of probes per excitation channel is physically limited by the number of lead wires that can be inserted into a single voltage excitation terminal, approximately six).

TABLE 4-1. Connections to Campbell Scientific Dataloggers

 

 

CR200

 

 

 

 

 

 

 

 

 

CR800

 

CR5000

 

 

CR850

CR510

21X

Color

Description

CR3000

CR500

CR7

CR1000

CR10(X)

CR23X

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Black

Excitation

Switched

Switched

Switched

 

 

Voltage

Voltage

Voltage

 

 

Excitation

Excitation

Excitation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Red

Temperature

Single-Ended

Single-Ended

Single-Ended

 

Signal

Input

Input

Input

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Purple

Signal Ground

 

 

 

 

 

 

AG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clear

Shield

 

 

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5. Programming

NOTE This section is for users who write their own datalogger programs. A datalogger program to measure this sensor can be generated using Campbell Scientific’s Short Cut Program Builder software. You do not need to read this section to use Short Cut.

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