AO-RRF(P)/A Humidity Transducer without display with Pendular Probe (0...100% r.H)

The AO-RRF(P)/A humidity transducer with pendular sensor measures the relative humidity 0...100% r.H. of the ambient air by a capacitive sensor and transforms it to a standardised output signal 0-10 V or 4-20 mA. The humidity sensor is protected against contamination by a sinter filter. In addition, the humidity measuring instrument has an integrated heating function for sensor protection in the high humidity range of 95...99% r.H. If the relative humidity exceeds the factory-preset threshold value for more than 10 minutes, this heating function is activated. Then the sensor will be temporally heated, thus dried respectively protected against condensation. During the heating and subsequent temperature compensation phase, the output signal is kept stable on the last measurement value before the protective function was activated. The humidity transducer can be adjusted locally for fine calibration by an offset controller.