Testing of the automatic water output

Automatic Calibration of Water Calculator DN15-DN20
The calibration device consists of the working platform, the pressure device, the front and end straight tube, the measurement of the cost or the welding valve, etc.
When the calibration device's input opening is connected to the source of stable pressure, water will enter the water container, and then into the standard measuring device. Compare the value between the water calculator and the measuring device to find out the error of the indication.