T-Surface Sensor
2
Installation
1. Fix the sensor cable at the measurement
object (e.g. stem or branch), by using the
included elastic and UV-resistant rubber
band.
2. Place and fix the sensor head at the de-
sired measurement position. In case stem
surface temperature is to be measured,
this can also be done by using the includ-
ed elastic and UV-resistant rubber band.
3. Leave about 30 cm of additional cable
slackly hanging between the two above described fixation points, so that the sensor
head is free of any pulling force.
4. Ensure a good thermal contact between surface of the measurement object and the
head of the temperature probe
5. Strain relieve the sensor cable leading to the data logger as close as possible to the in-
strumented measurement object, 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-Surface 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 sta-
ble, switched (sensor should only be powered 100ms before and during measurements)
excitation 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
