Principle and performance characteristics of water meter verification device by weighing method

The use of gravimetric water meter verification devices has been in use for several years. With the gradual improvement of technology, the superiority of ultrasonic water meters has gradually emerged. Then, let's understand togetherWater meter verification device by weighing methodThe principle and performance characteristics of it!

The working principle of the weighing method water meter verification device:

The ultrasonic water meter that uses the ultrasonic beam to propagate in the liquid has a slight change in the forward and reverse propagation time with the flow of the liquid, and the change in the propagation time is proportional to the flow velocity. When the structural parameters of the flow sensor are determined, as long as The flow value can be obtained by measuring the propagation time of the sound wave in the fluid

Performance characteristics of weighing method water meter verification device:

1. The battery is easy to replace, has a replaceable battery structure design, and is easy to maintain in the market;

2. Using a high-precision time measurement chip, temperature changes have minimal impact on ultrasonic water meter measurement;

3. Using micro-power circuit design technology, it has super long standby time, undervoltage indication and power failure protection functions;

4. There are no mechanical moving parts inside, and it has the characteristics of small pressure loss, no blockage, maintenance-free, long life, and no wear;

5. Ultrasonic technology can be used to realize multi-angle installation without being affected by instrument measurement, and at the same time reduce the pressure loss of the pipeline to a lower level;

6. The communication protocol adopted can also refer to the relevant regulations, and the user can also specify the protocol stipulated in the contract.

Water meter verification device by weighing methodA high-precision nominal water tank is required, and the size of the nominal water tank seriously affects the range and measurement accuracy of the measuring platform (a large nominal water tank represents high equipment investment and energy use). bigger.

The purpose of the weighing method water meter verification device is to provide a water tank for measuring the flow rate of the water meter by the weighing method with low investment and low energy consumption.The water tank provided herein includes a water tank with a drain valve at the bottom of the water tank, a partition arranged horizontally in the height direction of the water tank, the partition divides the water tank into an upper water tank and a lower water tank, and the partition has an intermediate valve communicating with the lower water tank, There is a drain valve at the bottom of the side wall of the upper water tank, and the height of the upper tank is greater than that of the lower tank.A mounting hole corresponding to the middle valve is provided at the middle position of the dividing plate.There is a through hole corresponding to the drain valve at the middle position of the lower tank floor.The valve is a butterfly valve because the butterfly valve has the characteristics of quick action.

The gravimetric water meter verification device is used to measure the tank of the water meter flow by the gravimetric method.The utility model comprises a water tank, a drain valve is arranged at the bottom of the water tank, and a dividing plate arranged horizontally along the height direction of the water tank is arranged.The dividing plate divides the water tank into an upper water tank and a lower water tank, an intermediate valve communicating with the lower water tank is arranged on the dividing plate, and a drain valve is arranged at the bottom of the side wall of the upper water tank.Through the opening and closing of the middle valve, the lower tank can be filled and drained multiple times. It is only necessary to measure the weight of the empty tank, the weight of the tank when the lower tank is filled with water, and the weight of the tank at the end of the test period, and record it at the test time. The total flow of the test period can be calculated according to the number of times the lower tank is drained. Compared with the existing technology, the water is metered while the water is entering the water tank. The volume of the water tank is relatively small, and the range of the scale is also much smaller. just low.On the other hand, the longer the test time, the higher the measurement accuracy, and the energy saving effect is more obvious when used for large-caliber water meter testing.

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