Using the humidity sensor can convert the humidity in the detected environment into the electrical signal we can handle, so that we can see what is the humidity in the detected environment, and then perform the humidity according to the required humidity.Adjustment.
Humidity sensor price
Different brands have different prices, generally about 400 yuan. It is recommended that the EddyNCDT brand products are recommended. Good work, large probe diameter, high range, high resolution, high accuracy, good corrosion resistance, durable, price favorable, worth choosing, it is worth choosingEssence
Humidity sensor circuit diagram
The application circuit diagram of the direct read -type humidity sensor circuit diagram Direct -reading humidity sensor application circuit is as shown in the figure below. The chloride hammer (hygroscopic salt substance) wet -sensitive resistor Rh is a new type of water molecular affinity moisture component, vacuum coating process, and vacuum coating process.The combed golden electrode is crossed on the glass sheet to form a layer.A layer of sensor membrane is applied to the electrode, which is prepared using chloride and polyvinyl chloride.The characteristic of polyvinyl alcohol is strong adhesion, and it is also a porous substance.The combination of this substance and chloride hammer can easily adsorb the water molecules by adsorbing and release through sensorized membranes to promote the rapid changes in the resistance value of the wet -sensitive resistor.
What are the humidity sensors
Types of domestic humidity sensors 1. Lithium chloride humidity sensor can be divided into resistance -type lithium chloride humidity meters and dew -point lithium chloride humidity meters.The price is also more reasonable, suitable for the measurement and control of this environment such as normal temperature and humidity; the latter is basically similar in form and the former, but the principle of work is completely different.And work.2. Carbonist components and other components have the advantages of fast response speed, good repetitiveness, no erosion effects, and narrow lag cycle compared to carbon -sensitive components, which are noticeable.The uncertainty does not exceed ± 5%RH, the time constant is 2 to 3s at the right temperature, and the stagnation difference is generally about 7%, which is better than the stability.3. The prominent advantage of aluminum oxide humidity The aluminum aluminum sensor is that the volume can be very small, high sensitivity, fast response speed, the measurement signal is directly output in the form of the electrical parameter, which greatly simplifies the data processing program and so on.
Humidity sensor work principle
The humidity sensor is a device that can feel the water vapor content in the gas and can convert it into a signal that can be output.Similar to the thermometer, on different occasions and locations, we must choose the humidity sensor of different accuracy and range according to the need.Generally speaking, the accuracy of the sensor in medium and low wet segments is higher, while the high -humid segment sensor is lower than the accuracy.

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