Troubleshooting - Decagon Devices VP-3 Operating Manual

Vapor pressure, temperature & relative humidity sensor

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VP-3 User's Manual

7. Troubleshooting

If you encounter problems with the VP-3 sensor, they most likely

will manifest themselves in the form of no reading from

communication problems or catastrophic sensor failure, or highly

inaccurate measurements due to sensor poisoning by volatile

chemicals. Before contacting Decagon about the sensor, do the

following:

Data Logger

1. Check to make sure the connections to the data logger are

both correct and secure.

2. Ensure that your data logger's batteries are not dead or

weakened.

3. Check the configuration of your data logger in ECH

or ECH

O DataTrac to make sure you have selected VP-3.

Sensors

1. Check sensor cables for nicks or cuts that could cause a mal-

function.

2. Check your screen and filter to make sure that they are not

contaminated or blocked. Airflow must not be restricted

through the filter.

3. In the case of inaccurate readings, consider evaluating sensor

accuracy and/or reconditioning the sensor as described in the

RH Sensor section.

O Utility

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