Diaphragm Analog Pressure Gauge v.s. Bourdon Tube Analog Pressure Gauge

To Bourdon Tube gauge, pointer moving path is through pinions transmission. Under status of high pressure or huge sudden pressure, pointer vibration is obvious without glycerin(liquid) refilled and cause difficulty in calibration reading. When user releases air, pointer return back to Zero then hits the stop pin. This situation will damage gauge life time.
Unlike Bourdon Tube gauge, Diaphragm pressure gauge is in diaphragm transmission(alloy plate swelling &shrinking). Gearless structure design brings strength of sudden pressure durable without refilling glycerin(liquid). Diaphragm pressure gauge is more shock resistant so life time extends.