Working principle of electric contact pressure gauge
The work principle is very simpleIt uses sliding resistors to control the switchThe current signal is outgoing
I took it apart. It was a curved, hollow, flat copper tube with a toothed ring and a gear mechanism. When the pressure in the pressure vessel, the bending of the flat copper pipe inside there is pressure, with the increase of pressure, the deformation of flat copper pipe (actually get straight, don't think HA), so as to drive the gear to rotate, the rotating gear is very small, with a pointer walk. The dashboard electrical mechanism, two static stylus (point), a stylus (point), a lead, and terminal blocks, two static contacts, a high point, the other is a low point, and the movable contact is contact with the pressure gauge pointer when walking, low pressure and low pressure set value, the movable contact and the static contact pressure, the motor starts to work, the pressure increases, the movable contacts left low voltage static contacts began to rise, when the pressure reaches the set pressure increasing static contact, disconnect the motor stop pressure. With the use of the user or something else, the pressure gradually falls, and then another new cycle begins. I can't get the electrical control diagram on, will I? I don't know what you do. We use a pressure tank here
