| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure switch capable of minimizing the changes due to the change of display unit of kgf/cm2 into Mpa. SOLUTION: The pressure switch 1 comprises a pressure sensor 9 for detecting a pressure, a relay 8 to be turned on or off when the pressure detected by the pressure sensor gets to a set value, an ON indication part 3 lit on when the relay is turned on and a pressure display part 2 for displaying the pressure. The pressure display part has three 7-segments 2a-2c for displaying three digits lower than a decimal point, a minus display part 2d located at the left side of the 7-segments and a decimal point display part 2e. The pressure in displayed in terms of Mpa, and a distance between the left end of the minus display part and the right end of the 7-segments is shorter than a distance between the left and right ends of four 7-segments, if arranged, and the decimal point display part is always lit on during displaying of the pressure.
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