If the reported values for temperature and/or relative humidity from a CS215-L are not valid numbers, what should be done?
If the values are not within the published range of the sensor, there are several things to check:
- If the yellow cap has not already been removed, remove it.
- Verify that the program is correct without additional multipliers or offsets.
- Ensure that the filter and radiation shield are clean so that air can freely flow into and past the sensor.
- If the first value returned in the array is NAN, this is usually an indication that the data logger is unable to communicate with the sensor. This could be caused by a power issue, an incorrect SDI-12 address, one or more disconnected wires, or a broken sensor.