The structure and working principle of the membrane box of the membrane pressure gauge?
The free end of the film box is divided into two parts, and the lower end is an air inlet. Then the upper end of the film box is used for driving the connecting rod to work
Structure of membrane pressure gaugeThis instrument consists of measuring system (including joint, bellows etc.), transmission mechanism (gear drive mechanism comprises a pull rod mechanism), indicating part (including pointer and dial) and the shell (including watchcase, ring and table glass). The working principle of the instrument is based on the bellows pressure of the measured medium, the free end of corresponding elastic deformation of the transmission gear transmission and amplification, the pointer is fixed on the gear shaft by the measured values indicated in the table. There is also a zero adjustment device that allows easy adjustment of the zero position.The working principle of membrane pressure gaugeBy measuring the pressure of medium from the joint into the membrane box inner membrane box free end pressure and displacement, drive the movement gear to rotate through the connecting rod mechanism, another pointer to indicate the pressure value indicated on the dial.The bellows pressure meter mainly consists of a joint, a watch case, a film box, a connecting rod, a movement, a pointer and a dial plate.Main parameters of bellows pressure gauge;1, 60, Phi Phi dial diameter: 75, 100, 150, Phi phi;2, accuracy level: 1. Level 6; 2. 5 stage;3, range: 0 to 1.6; 0 to 2.5; 0~6; 0~16; 0~25; 0~40; -4 to 0; -6 to 0; -10 to 0; -16 to 0; -25 to 0; -40 to 0-2 to 2; -3 to 3; to 12; -5 to 0~4; -12 to 5; -8 to 8; to;-20 to 20Kpa;4. The film box, elastic element and joint body are made of copper alloy and stainless steel 316.5. The structure of diaphragm pressure gauge: radial direct installation type, axial direct installation type, axial belt front mounting type, axial clamp type and so on;
The film box can not be fixed in the case, usually at the center of one of the diaphragm opening, as the inlet and fixed, then another diaphragm center is free end
