Difference between diaphragm pressure gauge and diaphragm pressure gauge

I. Working Principle

Diaphragm pressure gauge: diaphragm pressure gauge in the pressure measurement, the measurement medium will act directly on the isolation diaphragm, and produce perpendicular to the diaphragm and upward pressure, making the diaphragm deformation, deformation of the extruded space and prompt the spring tube filling liquid will be the medium pressure transfer to the spring tube, so that the spring tube end of the spring tube to generate the elasticity of the deformation, the use of connecting rod mechanism to drive the movement of the gear shaft rotates, so that the pointer in the dial to indicate the value of the pressure to be measured. Diaphragm Pressure Gauge

Diaphragm pressure gauge: under pressure, the measured medium acts directly on the elastic diaphragm, which produces elastic deformation upward (measuring positive pressure) or downward (measuring negative pressure), and the linkage mechanism fixed in the center of the diaphragm drives the gear shaft of the movement to rotate, so that the pointer indicates the measured pressure value on the dial.

Second, the elastic element

Diaphragm pressure gauge: the elastic element is a spring tube, and the diaphragm only plays the role of isolation.

Diaphragm pressure gauge: The elastic element of the diaphragm pressure gauge is the corrugated diaphragm. When the measured pressure acts on the diaphragm, the diaphragm produces upward (or downward) elastic deformation, and the pressure value is indicated by the connecting rod mechanism welded on the diaphragm.

Third, the accuracy level

Diaphragm pressure gauge: the general accuracy level is 1.6.

Diaphragm pressure gauge: the accuracy level is 2.5.