User manual

HC2S3 Temperature and Relative Humidity Probe
10
Table 8-2. Connections for Differential Measurements
Colour Description
CR1000,
CR3000,
CR800,
CR5000,
CR23X
CR10X,
CR10,
CR510,
CR500
Brown Temperature
Signal
Differential
Input – H
Differential
Input – H
Jumper to
Yellow
Temperature Signal
Reference
Differential
Input – L
Differential
Input – L
White Relative Humidity Signal Differential
Input – H
Differential
Input – H
Yellow Signal Reference Differential
Input – L
Differential
Input – L
Grey Power Ground G G
Clear Shield G
Green Power 12V/*SW12V 12V/*SW12V
*CR10X Power Control if
using SW 12V
Jumper from
SW 12V
CTRL to
Control Port
9. Example Programs
This section is for users who write their own datalogger programs. A datalogger
program to measure this sensor and wiring diagram can be created using
Campbell Scientific’s Short Cut Program Programming Wizard. Short Cut
supports most CSI dataloggers (CR7, 21X, CR10, CR500, CR510, CR23X,
CR3000, CR5000). You do not need to read this section to use Short Cut.
The temperature and relative humidity signals from the HC2S3 can be measured
using a single-ended analogue measurement or a differential analogue
measurement. Differential measurements are recommended for cables longer
than 6.0 m (20') as discussed in Section 10.
The HC2S3 output scale is 0 to 1000 mV for the temperature range of
-40°C to +60°C and 0 to 1000 mV for the relative humidity range of 0 to 100%.
Multipliers and Offsets for the measurement instructions to convert the
measurement result (mV) to temperature and relative humidity are shown in
Tables 9-1 and 9-2.