After entering the new house, I didn't find a water meter or an electric meter, nor did I find it in the house. Where can I find them?

At present, water meters and meters are generally not installed directly at home. The electric meter is generally at the bottom of the overhead floor, and the water meter is in the aisle of each floor.

Water meter is an instrument for measuring water flow, mostly the cumulative flow of water. Generally divided into two types: volumetric water meter and speed water meter. It originated in Britain and has a history of nearly 200 years. When choosing the specifications of water meters, we should first estimate the size and range of the flow used under normal circumstances, and then choose the most common flow as the first choice.

Traditional water meter

The internal structure of traditional water meter can be divided into three parts: shell, sleeve and inner core from outside to inside. The shell is made of pig iron, and the water passes through the lower annular space of the shell after coming out of the water inlet, which is called the "lower annular chamber" here. Above this annular space, there is an "upper ring chamber" communicating with the water outlet.

There is a filter screen with small holes at the bottom of the sleeve to filter out impurities in water. There are upper and lower rows of circular holes on the side of the sleeve, and the positions of the holes are opposite to the upper and lower annular cavities of the shell. Obviously, the lower row is the water inlet hole and the upper row is the water outlet hole. It is particularly noteworthy that these two rows of holes are made obliquely along the tangent direction of the circle.

According to the measuring principle

(1) speed water meter: a water meter installed in a closed pipeline, which consists of moving elements and obtains power speed directly by the moving speed of water flow.

Typical speed water meters include rotary water meters and spiral water meters. Rotor water meters also include single-beam water meters and multi-beam water meters.

(2) Volumetric water meter: a water meter installed in a pipeline, which consists of several chambers with known volumes, which are filled with and discharged from fluids in turn, and a mechanism driven by fluids, which is called quantitative discharge water meter for short.