How to debug the thermometer on the perpetual calendar?

It is not allowed to debug the thermometer on the perpetual calendar as follows:

Cover the back of the hygrometer with a wet towel for about 30 minutes. If the hygrometer shows that the humidity reading is 95% RH.

If the pointer fails to point to 95% RH, it should be adjusted with a suitable screwdriver.

Also avoid using in dusty environment. In order to correctly reflect the humidity of the space to be measured, it is also necessary to avoid placing the sensor too close to the wall or in a dead corner where the air is not circulating. If the measured room is too large, multiple sensors should be placed.

Extended data:

When using temperature and humidity timing, the following matters should be paid attention to to to prevent the temperature and humidity meter from being inaccurate or damaged.

The humidity sensor is unsealed, so in order to protect the accuracy and stability of measurement, it should be avoided to be used in acidic, alkaline and organic solvent atmospheres. Also avoid using in dusty environment. In order to correctly reflect the humidity of the space to be measured, it is also necessary to avoid placing the sensor too close to the wall or in a dead corner where the air is not circulating. If the measured room is too large, multiple sensors should be placed.

Some humidity sensors need higher power supply, otherwise the measurement accuracy will be affected. Or the sensors interfere with each other or even fail to work. When in use, a suitable power supply meeting the accuracy requirements should be provided according to the technical requirements.

When the sensor needs long-distance signal transmission, attention should be paid to signal attenuation. When the transmission distance exceeds 200 meters, it is recommended to choose a humidity sensor with frequency output signal.

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