Main technical parameters: accuracy level 2, standard: CJ/ t133-2012 IC card cold water meter Maximum allowable error: in the low range from the minimum flow (Q1) to the boundary flow (Q2) The maximum allowable error is ±5% from including the boundary flow (Q2) to including the overload flow The maximum allowable error in the high region of (Q4) is ±2% Working pressure: no more than 1.0mpa

Power supply voltage: 3.6v lithium battery, life not less than 6 years

Diameter DN（mm）	Length L mm	Width W mm	Hight H mm
15	165	85	115
20	195	85	115
25	225	119	115

1、Before the installation should first clear the branch pipe of hemp, sand and other sundries, so as not to cause the plugging fault of the water meter. 2、All parts of the IC card water meter shall be installed in a position to avoid exposure to sunlight, flooding, freezing, chemical and electromagnetic contamination Dye, and convenient disassembly, meter reading, and credit card. 3、The IC card water meter is required to be installed horizontally, and the arrow on the water meter housing must be in the same direction as the water flow 4、In order to ensure the accuracy of the flowmeter, it is required to leave 6-12 times the nominal diameter of the straight pipe section in front of the water meter. Straight sections with 4-6 nominal diameters are left at the rear