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High Pressure Test Bench for Portable Water Meter

The volume of fluid discharged by the piston is obtained by multiplying the cross-sectional area of the piston cylinder and the displacement of the piston. Driven by a servo motor to reduce disturbance to the fluid flow. It has many advantages such as stability and reliability, good repeatability, high degree of automation, and simple operation.
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  • DN15-DN25
  • SHMETERS

High Pressure Test Bench for Portable Water Meter

test bench for water meter

Production Background

The liquid flow standard device is widely used in the experiment and verification device of liquid flowmeter, especially for flowmeter manufacturers, there are a large number of instrument verification and product development experiments, and a set of efficient and reliable liquid flow standard device is made for them.

In industrial applications, flow standard devices must not only have sufficient accuracy and reliability, but also have high verification efficiency. Factors such as the construction cost of the equipment, the operating cost and the technical requirements of the operator must also be considered.

Traditional liquid flow standard devices are mostly based on mass and volumetric methods. The flow source relies on the pump to provide flow, but the flow is pulsating, the flow stability is poor, and the flow point adjustment is not accurate. However, with the rapid development of flow measurement and testing technology, these devices can no longer meet the requirements well.

In order to meet the requirements of liquid flow meter verification, calibration, factory inspection and the development trend of new flow meter production, our company has designed and manufactured an active piston type liquid flow standard device with water as the medium.

Working Principle

The standard device is uniquely designed and its basic working principle is to compare the volume flow of fluid discharged by the piston with the volume flow of the flowmeter under test over a certain time interval. The volume of fluid discharged by the piston is obtained by multiplying the cross-sectional area of the piston cylinder and the displacement of the piston. Driven by a servo motor to reduce disturbance to the fluid flow.

Advantage

1. It has many advantages such as stability and reliability, good repeatability, high degree of automation, and simple operation.                                                                                                                                                            2. It avoids the shortcomings of the start-stop effect or the commutator effect of the traditional liquid flow standard device. Helps to improve the level of measurement uncertainty.

3. The device also has the characteristics of complete equipment, compact structure, high efficiency and energy saving, no need to build a pool, no need to put forward special structural requirements for buildings, etc. It is very suitable for small flowmeters for production testing and product development testing.

Device Composition

This device is composed of water source system, clamp meter pipeline, flow regulating device, standard device system and software control system.

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Water pump: Wilo hot water pump has a maximum flow rate of 8m³/h, which is controlled by a frequency converter, and the software can set different frequencies.

Water tank: 304 stainless steel, the bottom of the water tank is equipped with a liquid level sensor, the software system can collect the current liquid level value of the water tank, equipped with an electric heating device, and the water temperature control accuracy is ±1 °C.

Pressure pump: The device is equipped with an automatic pressure device, the maximum set pressure is 2.5MPa, the pressure can be set in the software, the PLC control automatically stops when the pressure reaches the pressure, and the pressure is automatically released according to the pressure holding time.

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