
Chapter 7 ___________________________________________________________ Troubleshooting
VAISALA______________________________________________________________________ 205
Combined Wind Sensor
Air Temperature and Relative Humidity Sensor
Soil Temperature Sensor
Table 33 Troubleshooting Combined Wind Sensor
Problem Probable Cause Remedy
The data is not received
from the sensor.
The sensor is mechanically
damaged.
Check the cables and connectors.
The sensor is not powered properly. Check that the supply voltage is from
3 to 15 VDC.
Table 34 Troubleshooting the Air Temperature and Relative
Humidity Sensor
Problem Probable Cause Remedy
You receive no data. Cable is not connected. Check the cable connection.
The data seems to be
incorrect.
The installation site is not correct. Select a new location according to
the installation instructions.
The probe requires calibration. Calibrate the probe according to the
separate instructions.
Table 35 Some Common Problems of QMT107 and their
Remedies
Problem Probable Cause Remedy
You receive no data. Improper cable connection. Check cable connection.
The probe is not powered. Check the presence and correctness
of the line voltage.
Cable failure. Check cable integrity.
The data you receive
seems to be incorrect.
The probe in not properly inserted. Drill a new hole for the probe.
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