Pressure gauge MA12, especially suited for heavy measuring conditions, e.g. in case of pressure shocks, vibrations or high demands on breaking capacity. The overpressure safe measuring system guarantees high operation safety. The pressure chamber and the measuring diaphragm are available in different materials to meet various requirements. This pressure instrument is based on a rugged and uncomplicated diaphragm movement, suitable for overpressure and partial vacuum pressure measurements. In non-operative state, forces of the springs on both sides of the diaphragm are balanced. Pressure or vacuum to be measured creates an unbalanced force of the springs until a new balance is reached. When subjected to excessive pressure, the diaphragm rests on metal supporting plates. A centre-mounted tappet transfers motion of the diaphragm system to indicator movement and operating elements of micro switches.
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