User Manual for Test Bench LS-3B 15~25mm two row photoelectric control 2x10 water meter test bench with pressure test function

1. Structure
The test bench is made of complete stainless steel, polishing surface. Clamping device and discharge water using hydraulic pressure from stable water resource (pressure vessel) controlled by Two Ways Four Positions Valve. Flow rate is adjustable via brass ball valve. With advantage of high accuracy, compact structure, long lifetime, easy operating, simple maintaining.
- 1 -
This system consist of two row test bench with photoelectric sensor (Infrared sensor) and controller, water tank and water strainer, stable water resource (pressure vessel) and water pump.
2. Specification
(1) Accuracy: class 0.2
(2) Tested caliber: DN15, DN20 and DN25.
(3) Application: Using for complete test for water meter in production or inspection workshop.
(4) The instantaneous flow rate indicator is a group (three sets) of glass rotor flowmeter, practical indicating accuracy is not less than 2.5%, see right picture.
Glass rotor flowmeter:
LZB-15(4-90L/h) ---Indicating minimum flow Qmin.
LZB-25(70-700L/h) ---Indicating transitional flow Qt
LZB-50(450-7000L/h) ---Indicating nominal flow Qn
(4) Measuring gourd type water tank 15-25mm:
(10L+10L)20L 2pcs, (50L+50L)100L 2pcs.
(5) Water working pressure needed: 0.25-0.4Mpa(2.5bar~4bar)
(6) Clamp device flex distance: 50mm(LS-3B 15~25mm)
(7) Dimension: 2750×900×2100mm(LS-3B 15~25mm)
3. Principles Glass rotor flowmeter
The instrument is made up of photoelectric sensor (Infrared sensor) and controller. When the water level reaches the control point showing in vertical measuring ruler, the infrared sensor will send out the trigger signals to controller, which will cut off the flow via electromagnetic valves automatically. A test is finished through this process.