T-Soil Sensor
2
3. Put about 30 cm of additional cable in the installation hole, so that the sensor is free of
any pulling force.
4. Refill the installation hole with the excavated material.
5. Strain relieve the sensor cable coming out of the soil as close as possible to the instal-
lation position, e.g. on a peg firmly hammered into the ground.
You need further assistance?
In case you need further assistance for installation, please do not hesitate to contact us.
4. Wiring and Logger Configuration
The T-Soil sensor is compatible with our DL 18 data logger (ordered with stereo plug), as
well as with a wide range of other available data loggers, e.g. CR1000(ordered with bare
cable ends). However, note that suitable loggers have to provide a precise and stable,
switched (sensor should only be powered 100ms before and during measurements) exci-
tation voltage (V
ex
) of usually 2500 mV.
Connecting the sensor with bare cable ends, e.g. to a CR1000 logger:
The sensor can be connected either in differential (wiring diagram a), or in single-ended
(wiring diagram b) mode.
Figure A: Differential wiring
Figure B: Single-ended wiring
Wiring Examples:
Campbell Data Logger (CR1000)
This section describes how to connect the T-Soil sensor to the widely used Campbell data
logger CR1000. If you use another data logger, contact us in case you need further assis-
tance. The T-Soil sensor can be connected in differential voltage as well as in single-
ended voltage mode, measurement range must be set to 2500 mV. One CR1000 can rec-
ord up to eight T-Soil sensors in differential mode, or sixteen T-Soil sensors in single-
ended mode.
