Working principle of RF card smart water meter

RF card smart water meterWorking Principle:

This series of water meters is an instrument used to measure the total volume of water flowing through the tap water pipeline. Through the settlement management mode of first payment and then use, it has changed the traditional meter reading and payment method for water use. Using a contact type IC card as a medium, various information is input into the control system of the meter, enabling the meter to automatically open the valve and supply water according to the water purchased by the user in advance. When the water volume reaches the alarm value or runs out, the valve will automatically close, interrupting the water supply, and the LCD display will prompt the user to purchase water, achieving prepaid control; It can also record the operation status of the transmission table, display the operation status of the table through a microcomputer under the system management software, and effectively monitor it, thus changing the past arrears of water fees, saving manpower, material resources, and financial resources of property management and water supply departments, and improving management efficiency. The base table of this product adopts a self-developed small movement structure and low torque ball valve, which has the characteristics of high sensitivity and low valve opening torque; Using excellent microprocessors in the circuit to make the water meter havehigherThe performance of anti-interference, reliability, high precision, and low power consumption; Its structural design is compact and aesthetically pleasing.

RF card smart water meterMain technical parameters:

Water temperature: 0.1 ℃~30 ℃ (cold water gauge)

Applicable medium: Pure water, cannot be used for sewage or corrosive liquids.

Double reed switch samples 0.01m3 and emits a pulse

Work pressure: ≤ 1.0Mpa

Pressure resistance strength: ≤ 1.6Mpa

Minimum pressure difference: 0.04Mpa

Valve lifespan: ≥ 50000 cycles

Response time (on-off valve time):<12S

Sealing: No leakage for 15 minutes at a pressure of 1.6Mpa

Working voltage: 3.6V lithium battery

Working current: ≤ 55mA

Allowable error: from including the minimum flow rate to excluding the boundary flow rate in the low zone, ≤± 5%

From including boundary flow to excluding overload flow, the low zone is ≤± 2%