Sensor Description:

The DT014 sensor is a humidity sensor, measuring a range of 0-100% relative humidity. The DT014 uses Fourier Systems’ Egg-Shaped sensor case, and is equipped with a zero offset calibration screw. The DT014 is mostly used for environmental, biological and meteorological measurements.

The DT014 is based on a humidity-sensing component. This component is actually a changing electric capacitor, that changes it’s capacitating ability according to the humidity in it’s environment. A resistor is connected serial to the capacitor. When the dialectic parameter (capacitating ability) of the capacitor changes, the voltage measured on the resistor changes accordingly. This voltage is then adjusted to a range of 0-5 Volts, accepted by the analog-digital converter. The proper result is then recorded into the logger’s memory. The humidity-sensing component is also equipped with a temperature sensor, performing constant temperature compensation, in order to avoid bias results caused by the changes in room/air temperature.

The DT014 has a simple calibration mechanism for more accurate measurements. In the back of the Egg-Shaped sensor case you will find a small hole. In order to calibrate the sensor you will need a reference humidity, or an accurate measurement of the air around the sensor. Start a data recording. Insert a flat screwdriver into the calibration hole and slowly turn it until the measured value is exactly the same as the reference value. The sensor is now calibrated.

What is it used for:

The DT014 is used for biological, environmental and meteorological measurements. Among the experiments using the DT014 are body perspiration properties, the exploring of biotic conditions outdoors, and the research of meteorological connections between humidity, temperature and light.