According to whether the counter is immersed in water, it is divided into wet type water meter, dry type water meter, liquid sealed water meter.
(1) Wet-type water meter: the water meter where the counter is immersed in water, the glass of the watch is subjected to water pressure, the transmission of the sensor and the counter is gear linkage, and the quality of the water quality after reset will affect the clarity of the water meter reading.
(2) Dry-type water meter: the water meter where the counter is not immersed in water, the sensor is structurally isolated from the cavity of the counter, the glass of the water meter is not subject to water pressure, and the transmission of the sensor and the counter is generally driven by magnetic steel.
(3) Liquid-sealed water meter: the metering wheel used for meter reading or the entire counter is all prepared with a certain concentration of glycerin, etc. to prepare a liquid-sealed water meter. The effect of replacing the external water quality inside the sealed and isolated counter is the same as that of the wet-type water meter.
