Piston-type automatic water meter test bench is the latest water meter testing device. Piston-type water meter calibration and verification device use a servo motor to drive the hydraulic cylinder piston to push water to flow through the clamp holding the water meter to be tested at a precise instantaneous flow rate. The water meter bench measures the pipeline and compares the theoretical flow value with the actual flow value read by the meter to determine whether the water meter is qualified. The standard unit has a unique design. Its basic working principle is to compare the volume flow of the fluid discharged by the piston with the volume flow of the measured flowmeter in a certain time interval. The volume of fluid displaced by the piston is obtained by multiplying the cross-sectional area of the piston cylinder by the displacement of the piston. Driven by servo motors to reduce disturbance of fluid flow. It has many advantages such as stability and reliability, good repeatability, a high degree of automation, and simple operation. According to different testing standards and product types, it can be combined with different testing methods, commutator methods, and start-stop methods. Due to the working principle of the piston, the measurement accuracy of the test bench is very high, usually, the minimum detection flow is 2L per hour, so the high-precision water meter is gradually replaced with this new test bench for inspection, and the whole process of automatic detection does not require manual control, and it is also widely used because of its high efficiency and convenience. s reason. The types of test benches commonly used in the market include manual test benches, semi-automatic test benches, and fully automatic test benches.
In addition, the piston test bench is especially suitable for digital water meters. First, it can automatically generate test reports, and second, it can directly calibrate errors without rework.
In conclusion, the piston test bench has irreplaceable advantages.