Device and method for monitoring oil pressure and gas pressure of diaphragm compressor

A device for monitoring oil pressure and gas pressure of a diaphragm compressor, the device comprising:

• a strain gauge circuit;
• a cylinder head, a suction valve hole and a discharge valve hole, wherein the discharge valve hole and the suction valve hole are arranged on the cylinder head;
• and
• the strain gauge circuit comprises a strain gauge component and a bridge circuit connected to each other, the strain gauge component comprises a first strain gauge set and a second strain gauge set, the first strain gauge set directly contacts an outer surface of the cylinder head, wherein the first strain gauge set is located at an area along an extension line of a connecting line between a center of the suction valve hole and a center of the discharge valve hole of the cylinder head, the second strain gauge set is located within the discharge valve hole of the cylinder head, the first strain gauge set is connected to the bridge circuit, and the second strain gauge set is connected to the bridge circuit,
• wherein the strain gauge component further comprises a third strain gauge set and a fourth strain gauge set, the third strain gauge set is arranged on a flange, the flange is arranged on a gas discharge pipeline, and the fourth strain gauge set is arranged on the flange.