Welcome to Guangzhou Aosong Electronics Co., Ltd. official website


Industry News
Location: HOME > NEWS > Industry News

The concept and Measurement Scheme of temperature and humidity Meter

Release Time:2018-01-29 Reading Volume:0

Temperature and humidity meter:  used to measure the temperature and humidity of the environment to determine the environmental conditions of production or storage of products. It is also widely used in people's daily life. When there is a lot of moisture in the air, we say that the air is humid.

The concept of humidity:
Scientists often use relative humidity to describe the amount of moisture in the air. To put it simply, imagine the air is a towel. If you pour a glass of water, You can absorb water with a towel. But in fact, a towel can absorb more water than a glass. Maybe he can absorb five to ten cups of water. The amount of moisture in the air is just part of the moisture in the air. So the relative humidity is a percentage. When the relative humidity is 100 percent, the air is saturated. Like a wet towel, the air can no longer take water. When the relative humidity is 1% and the air is saturated, Evaporation and deposition are in equilibrium. The amount of evaporation added to reach the equilibrium is used as a moisture deposit.

Water vapor is called humidity in the air. Because the molecules of water vapor are so small that they can't be seen, people who study humidity have developed creative methods to measure the amount of water vapor.

There are as many as 20 or 30 kinds of humidity measurement in principle. But humidity measurement is always one of the most famous problems in the field of measurement in the world. Involving fairly complex physico-chemical theoretical analysis and calculation, the initial participant may ignore many of the factors that must be taken into account in the humidity measurement, thus affecting the rational use of the sensor. For example, the following:

Data collector
Environment collector
Air conditioning energy saving data recording monitor
Energy saving data monitoring recorder
Storage environment data recording monitor
Industrial environmental data monitoring recorder
Indoor / outdoor environmental data recording monitor

Selection of humidity Measurement Scheme

The concept of temperature and humidity Meter there are two main methods of modern humidity measurement: wet and dry ball method and electronic humidity sensor method. The two methods are compared below so that the customer can choose their own humidity measurement method.

The maintenance of dry-wet ball method is quite simple. In practical use, it is only necessary to add water to wet bulb regularly and replace wet ball gauze. Compared with electronic humidity sensor, dry and wet bulb moisture measurement method will not produce aging. Therefore, the wet and dry ball method is more suitable for high temperature and harsh environment. The electronic humidity sensor is relatively stable. It is the first choice of the public customers.