| 摘要 |
PURPOSE: A measuring and alarming device represents an air pressure to an air gauge and sounds an alarm and turns on an alarm lamp when the air pressure is lower than a predetermined pressure. CONSTITUTION: A measuring and alarming device comprises a diaphragm(41), a lever bridge(46), a first slip ling(42), a second slip ling(43), a contact plate(44) and a resistor(45). The diaphragm(41) installed on an air line moves up/down by an air pressure. The lever bridge(46) operates up/down according to the operation of the diaphragm(41). The first slip ling(42) and the second slip ling(43) rotate according to the lever bridge(46). The contact plate(44) is contacted to the first slip ring(42) by the rotation of the first slip ling(42) when the air pressure is lower than a predetermined pressure. The resistor(45) measures the air pressure according to the rotation of the second slip ling(43).
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