No.
Phenomena
Reason
Solutions
1
The measured value is not
within the expected value.
1.1
The sensor is drifted by
time.
Re-calibrate the sensor
1.2
The sensor was in a high
humidity environment (>
90% RH) for more than 03
days continuously.
Place the sensor in low
humidity for its recovery. It
may take up to 30 days to
recover. If the sensor
cannot recover after 30
days, please replace the
new sensor module.
2
The measured value is
always zero or near zero.
2.1
The sensor module was
removed.
Please check the sensor.
2.2
The sensor is at the end of
its life.
Replace the sensor module
3
The voltage output is 0V or
random noise
3.1
The wiring problem
Check the wiring and
connector M12.
Check power supply.
3.2
The sensor is faulty
Contact manufacturer.
What?
How?
When?
Re-calibration
The gas sensor may be drifting over time.
Please check
to
identify the interval time for the re-calibration
sensor. Please follow the calibration procedure
as in above section.
Approx. 6-12 months
Sensor replacement
Replace the new sensor module after 1-2 years
of operation (please check
below instructions.
Approx. 1-2 years
Sensor replacement instructions:
Step 1. Remove the Protector by Rotate it anti-clockwise
Step 2. Unplug the sensor module
Recommend to use other rope (plastic rope or stainless steel rope) to hang the sensor, it will reduce the tension
force of the signal cable.
4. Troubleshooting for the Daviteq NH3 Gas
Sensor
5. Maintenance of the Daviteq NH3 Gas Sensor
* Please disconnect the device before doing the following steps