How to choose the type of pressure gauge
Release time：2018-09-17 Browse：777
Pressure vessel is a closed device that holds a gas or liquid and carries a certain pressure. The storage container, the reaction container, the heat exchange container and the separation container are all pressure vessels.
1. For measuring special media such as viscous or acid and alkali, use diaphragm pressure gauge, stainless steel spring tube, stainless steel movement, stainless steel casing or Bakelite case.
Depending on the medium tested, there should be a specified color code on the pressure gauge and the name of the special medium. The oxygen meter must be marked with Red oil-free words, hydrogen with dark green under the horizontal line color standard, ammonia with yellow under the horizontal line color standard and so on.
2. According to the use of the pressure gauge can be divided into ordinary pressure gauge, ammonia pressure gauge, oxygen pressure gauge, electric contact pressure gauge, remote pressure gauge , anti-vibration pressure gauge, pressure gauge with inspection pointer, double needle double or double needle single tube pressure gauge, digital pressure gauge, digital precision pressure gauge, etc.
3. When installing against the wall, use a pressure gauge with an edge; when installing directly on the pipeline, use a pressure gauge without edge; For direct gas measurement, a pressure gauge with a safety hole behind the case should be used. For the pressure measurement position and for easy observation management, the diameter of the case should be selected.
