The working principle of the pressure gauge is based on the principles of mechanics and elastic deformation. When the pressure of the measured medium acts on the sensing element on the pressure gauge, the sensing element undergoes elastic deformation. The sensing element is usually made of elastic materials, such as spring tubes, films, etc. Elastic deformation causes the sensing element to change in shape or size, giving it the ability to measure the pressure of the measured medium.
Pressure gauges also usually have guards and connections. The protective device can protect the sensing element from interference and damage from the external environment, such as dust, moisture, vibration, etc. The connecting device is used to connect the pressure gauge to the pipeline of the measured medium to achieve pressure transmission and measurement.