Relative Humidity Sensor
- 产品介绍
- Typical experiment
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Introduction
♦ Humidity sensing component is designed in Humidity Sensor. The sensing component is a kind of polymer capacitor. The capacitance changes with respect to humidity. Humidity Sensor is used to detect relative humidity. There are net shaped holes on the inner side wall of probe cover so that air can pass through it.
Usage
♦ Connect sensor to datalogger and datalogger to computer.
♦ Open SWR iLab to create new experiment. Set proper experiment time and acquisition interval.
Notes
♦ Calibration is not required.
♦ The total air circulation impacts significantly on the response time of sensor. The response time of sensor is directly proportional to air moving speed. Under a certain humidity, if the probe of sensor is condensate with water drop, it will not offer accurate reading when measuring lower humidity before vaporizing. In order to quicken the vaporization of water drop, you can swing the sensor or use fan.
♦ The internal circuit of sensor is not completely isolated from external air. If the steam in the environment under measurement is possible to condensate (high humidity), you must prevent liquid flowing into circuit.
♦ The total air circulation impacts hugely on the response time of Humidity Sensor, i.e., its response speed in flowing air will be quicken accordingly.
♦ If the environment under the measurement is very dirty or unclean, it should be covered by nylon cloth to avoid pollution.
♦ The Humidity Sensor is insensitive to light.
♦ Do not expose the sensor in chemical air (such as acetone, organic solvent or chlorine), otherwise the sensor will be damaged.
Typical experiment
Typical experiment
♦ Transpiration of green plants
Others
♦ Measure the change of environmental humidity
♦ Hydroscopicity of the concentrated sulfuric acid
♦ Design and make the vivarium and observe its stability
