Campbell SI-111, Product Manual, Page: 21 / 22

B-1
Appendix B. Example Program
The example datalogger program measures the thermistor to obtain the sensor
body temperature and measure the thermopile to obtain the target-to-sensor
body temperature difference.
After measuring the thermopile and thermistor outputs, the sensor body
temperature is used to reference the target temperature.
Wiring for the example program is shown in TABLE B-1 . The actual terminals
used need to be adjusted for the actual installation and application.
Coefficients used to calculate the slope (m) and intercept (b) are
specific to individual sensors. The unique coefficients for each
individual sensor are provided on the calibration sheet shipped
with the sensor.
TABLE B-1. Wiring for Example Program
SI-111
Wire Color
SI-111SS
Wire Color Description CR1000X
Red White Diff. High 2H
Black Black Diff. Low 2L
Clear Clear Analog Ground
⏚
Green Green Single-ended SE1
Blue Blue Analog Ground
⏚
White Red Excitation
VX1
This example CR1000X program measures the sensor every 5 seconds and
outputs a sample once every 60 seconds. The actual measurement rate and
output intervals need to be adjusted for the actual installation and application.
All calibration coefficients are sensor-specific; those listed below
are examples and must be changed based on the sensor being used
.
NOTE
NOTE