Traditional liquid flow standard devices are mostly standard devices based on the mass method and volumetric method. There are two ways to generate a flow source. One is a high-level water tower, which has a stable flow. Generally, the construction cost of voltage stabilization equipment is relatively high. The first is to rely on the water 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 flowmeter verification, calibration, factory inspection, and the growing trend of new flowmeter production, our company has designed and manufactured an active piston liquid flow standard device with water as the medium. The standard device has a unique design and its basic working principle is to compare the volume flow rate of the fluid discharged by the piston with the volume flow rate of the measured flowmeter within a certain time interval. The volume of the fluid discharged by the piston is obtained by the product of the cross-sectional area of the piston cylinder and the displacement of the piston.
Driven by a servo motor, the disturbance to the liquid flow is reduced. It has many advantages such as stability, reliability, good repeatability, a high degree of automation, and easy operation. It avoids the shortcomings of the start-stop effect or the commutator effect of the traditional liquid flow standard device. It is beneficial to improve the level of measurement uncertainty. The device also has the characteristics of being self-contained, compact structure, high efficiency, and energy saving. It does not need to build a pool and does not require special structural requirements for buildings. It is very suitable for production testing and product development testing of small flow metering instruments.
The specific steps involved in using a piston test bench for water meter testing may vary depending on the manufacturer and model of the test bench. However, here is a general overview of the process:
1. Preparation: Ensure that the water meter to be tested is properly installed and all necessary equipment is ready.
2. Calibration: Calibrate the test bench to the specific testing standards and product types required.
3. Test setup: Set up the test bench for the specific water meter to be tested, including any necessary connections and adjustments.
4. Testing: Initiate the testing process, allowing the test bench to automatically carry out the testing procedures.
5. Data analysis: Analyze the test results generated by the test bench, including any errors or malfunctions.
6. Correction: If necessary, use the test bench to directly correct any errors or malfunctions detected during testing.
7. Reporting: Generate a test report using the test bench, summarizing the results of the testing process.
These are general steps involved in using a piston test bench for water meter testing. It is important to consult the manufacturer or a specialist in the field for specific instructions and procedures for the particular test bench being used.