Uses and characteristics: XD Series RF IC card intelligent water meter for residential water metering and automated clearing. Smart card water meter is RF card (non-contact card) information carrier, by the sale of water management system, control of the actuator and RF IC card. IC card cold water meter (CJ/T133-2007) standards, the use of multiple hardware and software redundancy design, strong anti-electromagnetic interference, anti-attack protection circuit. Special instrument for water supply automatic control, automatic information processing. By the crisis in the sale of water management system software will display the operational status of the table. Implementation of effective monitoring, so as to solve the problems of the past arrears of water charges, meter reading, inefficient. Quantitative water, water control, enabling rescission water, and saving property management and water sectors of human, material and financial resources, improve water conservation and management efficiency. Technical parameters: Model XDZS-15 XDZS-20 XDZS-25 port diameter (mm) 15 20 25 Length (mm) 165 195 255 Maximum flow rate (m3 / h) 3 5 7 commonly used flow (m3 / h) 1.5 2.5 3.5 transitional flow (m3 / h) 0.12 0.2 0.3 minimum flow rate (m3 / h) 0.03 0.05 0.07 starting flow (m3 / h) ≤ 0.01 ≤ 0.012 ≤ 0.017 minimum reading M3 0.0001 maximum readings m3 9999.99999 power and life 2.4A Lithium Battery life six years IC card using the frequency of use> 100,000 times alarm remaining amount of water 2m3, turn off the alarm quiescent operating current the <10uA small flow rate error, ≤ 5% of the common traffic errors ≤ 2% Operating temperature ° C 0-40 ° C Working pressure MPa 0.1 -0.6