Note: 1 I asked not the difference between the diaphragm pressure gauge and the ordinary pressure gauge;2 what I ask is not the difference between the diaphragm pressure gauge and the diaphragm pressure gauge;I think someone has answered a similar question before, and when it comes to the diaphragm, it's driven by isolated liquid. What's that diaphragm? Or the diaphragm is the diaphragm that contacts the measuring medium
The diaphragm pressure gauge is the diaphragm that represents the direct response of the elastic element to the pressure
Diaphragm pressure gauge measuring element type is "spring pipe + diaphragm", the diaphragm is only isolated transmission components, rather than sensitive components; diaphragm pressure gauge directly to the diaphragm as a sensitive element, and no longer use spring tubeThe diaphragm meter by spring tube range limit, the minimum range is usually only 0.1MPa or 60kPa; diaphragm pressure meter is usually used for micro pressure, the minimum can be 1kPa to 2.5MPa. two, the highest range have overlapping and complement each other.
Diaphragm pressure gauge has two parts: part of the meter (spring tube pressure gauge), and the other part of the isolated body (chemical seal, diaphragm welding carrier). After the diaphragm detects the pressure, the pressure is transmitted to the spring tube through the filling oil between the isolator and the spring tube, and the pressure is displayed on the Bourdon tube pressure gauge.The diaphragm pressure gauge is directly displayed on the diaphragm pressure gauge after the diaphragm transfers the pressure directly to the connecting rodThere are two differences:1, measuring range is different: diaphragm pressure gauge measuring range 0.001MPa-4MPa (mainly used for micro pressure); diaphragm pressure gauge measuring range 0.06MPa-60MPa (mainly used for atmospheric pressure and high pressure);2, diaphragm effect is not the same: diaphragm pressure gauge diaphragm from the role of elastic sensitive components; diaphragm pressure gauge diaphragm only from the isolation and transmission of pressure; elastic sensitive element has a spring tube completed;3, the structure is not the same: diaphragm pressure gauge is self-contained structure, diaphragm pressure gauge is composed of Bourdon tube, pressure gauge, isolator, transmission oil and accessories.
