Frequently Asked Questions About Humidity Sensor Module HR202
Q1: What is a humidity sensor module HR202?
A tool created to gauge an environment's humidity level is the HR202 humidity sensor module. It has a signal processing circuit and a humidity sensor device, and it generates an analog output proportional to the relative humidity.
Q2: How does the HR202 humidity sensor work?
A polymer sheet that is humidity-sensitive is used as the input for the HR202 humidity sensor, which measures changes in capacitance. The film is positioned in a protective container between two electrodes. The film absorbs or releases moisture when the humidity level varies, changing the capacitance of the film. This change in capacitance is transformed into an analog voltage output that is proportionate to the relative humidity by the signal processing circuit in the module.
Q3: What is the measuring range of the HR202 humidity sensor module?
20% to 90% relative humidity (RH) is the measurement range for the HR202 humidity sensor module. It is crucial to remember that the module's accuracy declines near the measurement range's extremes.
Q4: What is the accuracy of the HR202 humidity sensor module?
The HR202 humidity sensor module generally has an accuracy of 5% RH. The environment in which the module is utilized, temperature, calibration, and other variables can all affect this, though.
Q5: What is the response time of the HR202 humidity sensor module?
The HR202 humidity sensor module normally responds within 5 to 10 seconds. However, this may change based on elements like temperature and humidity.
Q6: What is the output signal of the HR202 humidity sensor module?
The humidity sensor module HR202 produces an analog voltage that is proportional to the relative humidity as its output signal. The normal voltage output range is between 0.8V and 4V, where 0.8V equals 20% relative humidity and 4V equals 90%.
Q7: What is the power supply requirement of the HR202 humidity sensor module?
The HR202 humidity sensor module needs a 5V DC power source. The module normally uses less current than 1mA.
Q8: Can the HR202 humidity sensor module be used in outdoor environments?
The HR202 humidity sensor module should only be used indoors; it is not intended for use outside. Rain and moisture can harm it because it is not waterproof.
Q9:How should the HR202 humidity sensor module be calibrated?
Both a calibration chamber and a saturated salt solution may be used to calibrate the HR202 humidity sensor module. A known humidity level should be applied to the module for a while, and the output voltage should be measured and compared to the predicted value. To guarantee accuracy over the measurement range, the calibration procedure should be performed at various humidity levels.