Working principle of bellows pressure gauge and pressure range may be used

Bellows pressure gauge is used to measure the corrode the copper alloy, no explosion danger, the micro pressure and negative pressure of the gas is widely used in boiler ventilation, gas pipeline, burning device and other similar devices. It works by bellows sensitive element connected by two pieces of circular waves of diaphragm. Bellows work is measuring cavity inside the membrane box, medium pressure deformation caused by the pressure, can be used to indirectly measure the size of the pressure value showed by the pointer. Micro pressure table is generally used to measure the pressure of the gas, micro pressure, over-voltage protection, to some extent is also possible. According to the different pressure unit, the bellows pressure gauge can measure the range is different also, Kpa, for example, can bellows pressure gauge measuring range is as follows: 0 ~ 2. 5; 0 ~ 4; 0 ~ 6; 0 ~ 10; 0 ~ 16; 0 ~ 25; 0 ~ 40; 0 ~ 60; - 2. 5 to 0; - 4 to 0; - 6 ~ 0; - 10 ~ 0; - 16 ~ 0; - 25 ~ 0; - 40 ~ 0; - 2 ~ 2; - 3 ~ 3; - 5 ~ 5; - 8 ~ 8; - 12 ~ 12; - 20 ~ 20 - 30 ~ 30