I     Summary

First, it is necessary to explain the problems related to the accuracy of metrological verification. In terms of accuracy of metrological verification, there is no difference between dry water meter and wet water meter. Even if there are differences, they are better than nothing and should be ignored. This is because all remote water meters must pass the mandatory inspection of authoritative quality inspection units before being used. Therefore, customers can use them unworried.

II     Difference

On the topic of the advantages and disadvantages of dry water meter and wet water meter, we should first understand the differences between dry water meter and wet water meter.

A wet water meter is a water meter in which the counter is immersed in water. The watch glass is subjected to water pressure, and the transmission of the sensor and the counter is gear linkage. After a period of use, the water quality will affect the clarity of the water meter reading. Indoors should give priority to wet water meters.

The shortcomings of wet water meters are structural shortcomings. After the wet water meter is used for a period of time (especially in areas with poor water quality), the dial is easy to turn yellow and black, which affects reading. When the temperature is cold, the water in the glass of the water meter will freeze, which will make the water meter inoperable and even destroy the water meter.

Dry water meter is a water meter whose counter is not immersed in water. Technically, the sensor is isolated from the counter, and the water meter glass does not bear water pressure. The counting of dry water meter is driven by the impeller through magnetic coupling. Then the runner cooperates with multiple reduction gears to drive to the word wheel, and the display is completed. The existing dry water meter is composed of an impeller box, an impeller, a gear box, a runner and a counter.

Because the counting mechanism of dry water meter is isolated from the measured water, it is not affected by impurities in the water to ensure the normal operation of the counting mechanism and the clarity of reading; At the same time, it will not affect the reading of the water meter due to the temperature difference inside and outside the meter, such as fog or condensed water droplets under the glass. Even if the glass is accidentally broken during use, the water will not overflow and has good safety. However, due to its relatively complex structure, the dry water meter has high requirements for the manufacturer’s production technology and assembly process, so its cost is slightly higher than that of the wet water meter.

III     Conclusion

In general, there is no need for a showdown regarding which of these two types of water meters is better. Because in different operating environments, people should choose different water meters appropriately. Whether it is a wet or dry water meter, our company has a variety of water meters to choose from.