Pressure gauge can be divided into different characteristics of the measurement medium: 1, general type pressure gauge: general type pressure gauge for measuring non-explosive, non-crystallizing, non-condensing copper and copper alloy corrosion of liquids, gases or vapors; 2, corrosion-resistant type pressure gauge: corrosion-resistant type pressure gauge is used to measure the pressure of corrosive media, commonly used in stainless steel type pressure gauge, diaphragm-type pressure gauges, etc.; 3, Explosion-proof pressure gauge: explosion-proof pressure gauge used in the environment of explosive mixtures in hazardous places, such as explosion-proof electric contact pressure gauge, explosion-proof transmitter, etc. 4, special pressure gauge. According to the use of pressure gauge: can be divided into ordinary pressure gauge, ammonia pressure gauge, oxygen pressure gauge, electric contact pressure gauge, remote pressure gauge, vibration-resistant pressure gauge, with inspection pointer pressure gauge, double needle double tube or double needle single tube pressure gauge, digital pressure gauge, digital precision pressure gauge. Stainless Steel Membrane Box Pressure Gauge Stainless Steel Membrane Box Pressure Gauge is a corrosion-resistant micro-pressure gauge developed with reference to the structural characteristics of the original membrane box pressure gauge. Used in boiler ventilation and gas piping and other equipment, in the corrosion-resistant requirements of the process to measure the micro-pressure and negative pressure of various gaseous media. For domestic users of the introduction of foreign advanced technology equipment in the same instrument to achieve localization of the ideal supporting products. Structure principle: the instrument consists of measuring system including connector, corrugated membrane box, etc., transmission mechanism including rod pulling mechanism, gear transmission mechanism, indication parts including pointer and dial and shell including case, liner ring and table glass are composed. The working principle of the instrument is based on the corrugated diaphragm box under the pressure of the measured medium, the free end of the corresponding elastic deformation, and then by the gear transmission and amplification of the drive mechanism, fixed on the gear shaft of the pointer will be measured by the value of the indication on the dial. There is also a zeroing device, you can easily adjust the zero position. Stainless steel pressure gauge stainless steel pressure gauge is widely used in petroleum, chemical, chemical fiber, metallurgy, power station and other industrial sectors of corrosion resistance, vibration resistance requirements of the process of measuring the pressure of various fluid media.