Pirani vacuum gauge is a simple instrument for discovering vacuum. It has the advantages of wide measuring range, simple structure, light weight, high reliability and low cost. It is widely used in air conditioning and refrigeration industries at home and abroad.
The Pirani vacuum gauge has a weighing element installed in a smooth U-shaped tube. When the degree of vacuum changes, the weighing element will be deformed by the pressure in the air, thus changing the position of the center of gravity, causing the cursor to shift, and the instrument A minute will appear on the screen and a rotating dial will be provided. The pointer will point to the corresponding minute as the degree of vacuum changes, thereby measuring the degree of vacuum.