The system applied two sensor elements: NTC type high precision temperature sensor and a resistor type relative humidity sensor from Japan.
Humidifying of gas adopts constant temperature tank and fibred humidifier to humidify the air and hydrogen. Testing of humidity adopts HS1101 humidity sensor.
Experiment result shows that output signal of this macromolecule humidity sensor accords with variational rule of secondary polynomial fitting.
Thermometers and hygrometers or temperature sensors and humidity sensors are uniformly distributed in a drying room.
