Classification pressure gauge The pressure gauge can be divided into precision pressure gauges and general pressure gauges according to its measurement accuracy. The accuracy of the precision pressure gauges is 0.1, 0.16, 0.25, and 0.4, respectively. The accuracy of the general pressure gauges is 1.0, 1.6, 2.5, and 4.0 respectively. The pressure gauge is divided into a general pressure gauge, an absolute pressure gauge, and a differential pressure gauge according to the pressure reference standard. The general pressure gauge is based on the atmospheric pressure, the absolute pressure gauge is based on the absolute pressure zero, and the differential pressure gauge measures the difference between the two measured pressures. The pressure gauge is divided into a vacuum gauge, a pressure vacuum gauge, a differential pressure gauge, a low pressure gauge, a medium pressure gauge, and a high-voltage gauge according to its measurement range. The vacuum gauge is used to measure the pressure value less than the atmospheric pressure, the pressure vacuum gauge is used to measure the pressure value less than and greater than the atmospheric pressure, the micro pressure gauge is used to measure the pressure value less than 60000PA, and the low pressure gauge is used to measure the pressure value 0~6MPA. The medium pressure meter is used to measure the pressure of 10~60MPA, and the high pressure meter is used to measure the pressure value above 100MPA. Pressure gauge according to its display points: pointer pressure gauges, digital pressure gauges. The housing of the shock-proof pressure gauge is made of a fully sealed structure, and the housing is filled with damping oil (most of which is now filled with silicone oil). Due to its damping effect, it can be used in the measurement environment where the working environment vibrates or the medium pressure (load) pulsates. Pressure gauges with electrical contact control switches enable signaling alarms or control functions. Pressure gauges with remote transmissions can provide the electrical signals required in industrial engineering (such as resistance signals or standard DC current signals). The separator (chemical seal) used in the diaphragm table can isolate the measured medium from the meter through the isolation diaphragm to measure the pressure of the highly corrosive, high pressure, and easily crystallized medium. The elastic element of the pressure gauge The elastic sensitive element in the mechanical pressure gauge is elastically deformed as the pressure changes. Mechanical pressure gauges are spring loaded (Boden tube), diaphragms, bellows, bellows and other sensitive years and are classified accordingly. Sensitive elements are usually made of copper alloy, stainless steel or made of special materials. Spring tube (Boden tube) is divided into C type tube, coil spring tube, spiral tube and other types. Cold work-hardened material blanks are generally used. They have high plasticity in the retreating state, and they have high elasticity and strength after cold work hardening and qualitative treatment. The spring tube can be easily converted into the elastic displacement of the free end of the spring tube by utilizing the elastic properties of the spring tube under the pressure of the inner chamber. Spring tube measurement range is generally 0.1MPA ~ 250MPA. Diaphragm sensing element is a circular diaphragm with wave, the diaphragm itself is located between two flanges, or welded on the flange or its edge is sandwiched between two flanges, the diaphragm is Measure the pressure of the medium, so that the tiny bending deformation produced by the diaphragm can be used to indirectly measure the pressure of the medium. The size of the pressure is indicated by the pointer. Compared with Bourdon tube, the diaphragm has greater transmission force. Since the diaphragm itself is fixed around its edge, its vibration resistance is better. Diaphragm pressure gauges can achieve very high overpressure protection (such as diaphragm attached to the upper flange). Diaphragms can also be coated with protective coatings to improve corrosion resistance. With open flanges, flushing, openings, etc., diaphragm pressure gauges can be used to measure highly viscous, unclean and crystalline media. Diaphragm pressure gauge pressure measurement range in 1600PA ~ 2.5MPA. Capsule sensor consists of two pairs of buckled together circular wave section of the diaphragm. The pressure of the measuring medium acts on the inside of the capsule chamber, and the resulting deformation can be used to indirectly measure the medium pressure. The value of the pressure value is indicated by the pointer. Membrane pressure gauges are generally used to measure the micro-pressure of the gas, and have a certain degree of over-voltage protection. After a few capsules of sensor elements are sang together, they will generate a large transmission force to measure extremely small pressure. Membrane pressure gauge pressure measurement range at 250PA. Automobile Engine Repair Agent Automobile Engine Repair Agent,Repair Agent Of Automobile Engine,Engine Wear Repair Agent Gasoline,Petrol Engine Wear Repair Agent Ningbo Hangtai Environmental Protection Technology Co., Ltd , https://www.nbhangtaikj.com