| 摘要 |
A pressure gauge having a contactless sensor is provided to generate a signal through a contactless sensing operation of the contactless sensor according to rotation of an indicating needle, start or stop a related device and sense magnetism in a contactless manner to generate a signal. A pressure gauge(1) having a contactless sensor includes a Bourdon tube(22) connected to a pressure inlet and a driving part, a pressure detector(2) rotated according to compressive strain of the Bourdon tube, an indicating needle(31) having magnetism and rotating with respect to the central axis, a scale plate(33) located between the indicating needle and the Bourdon tube, and an indication detector(3) detecting rotation of the indicating needle to the sensor in a contactless manner and generating a signal.
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