The ULTIMETER Humidity Sensor utilizes a precision thick film polymer capacitance device. The sensor is used in a low-frequency oscillator circuit, which changes frequency as the relative humidity of the air changes. The output of the oscillator is fed into the microprocessor. The exceptional long-term stability of the humidity sensor element means years of use without recalibration.
The ULTIMETER Temperature Sensor is a precision aged interchangeable thermistor.
Operates over the full humidity range, from 0% to 100% R.H.
Temperature range is -55 F to 150 F.
Includes 40 ft. cable and mounting hardware (longer cable lengths optional).