Pay attention to four points for pressure meter selection
The selection of pressure gauges mainly focuses on the following 4 conditions: 1. The form of the pressure gauge 2. The range and range of the pressure gauge 3. The sensitivity and accuracy of the pressure gauge 4. The size and other functions of the pressure gauge . For example, the remote transmission capability, indication capability, recording capability, adjustment capability and alarm capability of pressure instruments. In industry, the pressure gauge is mainly used to measure the pressure of a selected target.
1. Measurement requirements for pressure instruments
The measurement requirements of pressure instruments are mainly proposed by the process of production, and the measurement requirements include the range and range, sensitivity, and accuracy of pressure instruments . The maximum value of the pressure meter itself under static test conditions should be two-thirds of full scale, and under pulsation test conditions, it should be one-half of full scale.
The accuracy of the pressure instrument is selected according to the accuracy required by the production process, and the economics of purchasing the pressure instrument must be taken into account. The maximum allowable error of a pressure gauge is the product of the range of the pressure gauge and the percentage of accuracy level. If this value is higher than the production requirements, then a pressure gauge with higher accuracy must be selected. ,
2. Measurement medium of pressure instrument
The properties of the pressure measuring medium are also directly related to the selection of the pressure gauge. The properties of the pressure measuring medium include the state, temperature, viscosity, corrosion degree, whether flammable and explosive, and whether it is dirty, etc. If the working medium of the pressure instrument is a high-temperature medium, a high-pressure medium or a highly corrosive medium, a special type of pressure instrument must be selected.
3. Working environment of pressure instrument
The working environment conditions of the pressure gauge include temperature, humidity, corrosion degree, and whether it is vibrated. According to different environments, different pressure gauges must be selected. For example, pressure gauges with anti-vibration functions must be selected in vibration environments.
4. Observation requirements for pressure instruments
The selection of pressure instruments also needs to facilitate observation. This requires comprehensive consideration of various factors such as the location of the pressure instrument installation, lighting conditions, and the size of the pressure instrument itself.