The sensor measures the relative humidity of the air.
The sensor measures the relative humidity of the air. It contains a temperature sensor together with a humidity sensor to calculate additional paramters like dew-point, difference, water vapor pressure. The anti-radiation shield (shlter) is made from UV- resistant polycarbonate to keep the bright white color after years. The bottom side of the plates are painted to dead black to keep the radiation error below 0.4%/0.2'C.
The thermal drifts of the moisture sensor is uniquely calibrated and stored in the internal microcontroller as a calibration table. The microcontroller makes automatic software thermal compensation of the natural measured moisture, so yhe output of the device is a temperature independent compensated, accurate value.
Besides the basic parameters, the instrument also provides some important data such as dew point of air, portial pressure of water vapor, etc.