A mechanical thermohygrometer is a device used to measure temperature and humidity. It works by measuring temperature and humidity through physical changes in mechanical parts. This kind of temperature and humidity meter has the advantages of being simple, easy to operate, and inexpensive, so it is widely used in some conventional environments.
However, mechanical thermohygrometers are relatively inaccurate and susceptible to environmental factors. For example, temperature, humidity, air pressure, vibration, etc. can all have an impact on the measurement results of a mechanical thermohygrometer. For this reason, mechanical thermohygrometers are generally not recommended for certain high-precision measurement applications, such as scientific research, industrial production, etc.
Mechanical temperature and humidity meter is mainly used in some conventional environments, such as warehouses, laboratories and other places with high environmental requirements. In addition, it is also suitable for use in industry, agriculture, climate, medical care and everyday meso.
Therefore, in order to ensure the accuracy of the instrument, it is necessary to calibrate the instrument regularly. Next, please follow Huazhun Metrology, a third-party measurement and calibration institution in Shaanxi, to learn more about it.
The main reason why mechanical thermohygrometers need to be calibrated is because their measurement accuracy can deviate with the time of use and environmental changes. If the measurement results of the thermohygrometer are too far off, it will affect its accuracy and reliability in a variety of applications. In practice, some industries require very high accuracy, such as pharmaceutical, food, meteorology, etc., so thermohygrometers in these industries need to be calibrated more frequently. At the same time, for the measurement and calibration of some temperature and humidity meters, regular testing and verification should be carried out in accordance with national laws and regulations to ensure that they meet the accuracy and stability of the standards.
The measurement and calibration items of mechanical temperature and humidity meter mainly include the following items:
Visual inspection: check whether the appearance and structure of the thermohygrometer are intact, whether there is obvious mechanical damage, whether there are scratches and rust on the surface, and whether there are defects that affect the measurement performance.
Temperature indication error: whether the calibration temperature indication error is less than or equal to 2.
Relative humidity indication error: whether the calibration relative humidity indication error is less than or equal to 5%RH.
More content should pay attention to the instrument calibration mechanism, more instrument package, instrument maintenance content.