Decagon Devices MAS-1 Manual do utilizador - Página 17
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6. Troubleshooting
If you encounter problems with the MAS-1, they will usu-
ally be caused by one of two situations
•
If the MAS-1 readings in air and/or water are outside the
ranges given in the Testing the Sensor section, then
there is likely a problem with the connection to the PLC
or other data acquisition system. Check the wiring and
check to make sure that the supply voltage is in the
specified range.
•
If the MAS-1 is reading a negative value for VWC
while it is inserted into the soil, make sure that you have
good sensor-to-soil contact. When inserted, the MAS-1
should be completely covered up past the black over-
molding. Removing and re-installing the full length of
the sensor with good sensor-to-soil contact should rem-
edy this problem.
If problems persist, contact Decagon for assistance.
MAS-1 Soil Moisture Sensor
14
6. Troubleshooting