01. Definition: 
Pressure vacuum gauge and vacuum gauge used to measure the corrosive effect on steel, copper and copper alloys, no risk of explosion is not crystal,solidification of liquid, gas or steam medium pressure or negative pressure.

02. Product classification: 
1. seismic vacuum table: for vibration and pressure fluctuation measurement, no corrosion, no crystallization of medium pressure;
2. the electric contact pressure gauge and vacuum gauge used for measuring the electrical contacts: copper and copper alloy non-corrosive effect, no explosion danger of non-crystalline not liquid, gas and other media (pressure) and negative pressure. When the pressure reaches a predetermined value, the contact device, the control circuit can be switched on or off, at the same time sends electrical signals;
3. stainless steel and stainless steel vacuum gauge pressure vacuum gauge used to measure no corrosive effect on stainless steel 316316L and 0Crl8Ni12MO2Ti of the liquid, gas pressure and negative pressure, the stainless steel with corrosion resistance ability to the environment;
4. acid pressure vacuum gauge used to measure nitric acid and alkali liquid medium pressure and negative pressure vacuum gauge used for pressure measurement; acid nitric acid and alkali liquid.

03. Product specifications: