RF Card water meter ; water meter ; DN15

Product Description:

The RF card water meter (DN15) consists if a valve device, a movement, a sensor, a reducer, a battery, an electorinic module, and a radio frequency card. It has prepaid and cintrilled function.

It implements the CJ/T133 standard. The indication error and measurement width with the GB/T778.1 (equivalent to ISO4064).

The main technical parameters

1. Pulse constant: 10

2. Quiescent current: ≤6uA

3. Dynamic current: implements : ≤20mA

4. Actuator maximun current : ≤60mA

5. Working voltage: 2.8V to 3.6V

6. Q₁ to Q_2, excluding Q₂ indication error ≤±5%, Q₂ to  Q₃ (including  Q₂) indication error ≤±2%

Features

• When the battery is not powered or the battery is replaced, the valve is automatically closed to effectively prevent water theft. When the battery is powered, the valve is automatically opened, which does not affect the user's water.

• Anti-attack design, anti-magnetic, anti-vibration. When a magnetic object is close to the water meter, the valve is automatically closed to prevent the magnetic object from interfering with the meter.

• Pre-paid function, after the card is recharged, the water is swiped, and the remaining amount or amount is automatically reduced when the water is used. The remaining amount is automatically closed.

• For the query funtion, the user can query the remaining amount, water consumption and other related information on the water meter LCD.

• One meter to one card, the user first puechases  the water card and the water meter is bound, one water meter corresponds to one card is locked.

• The card replenishment funtion, the replenishment card continues the data in the original meter and the amount or amount of water remaining

• Anti fouling function, automatic opening and closing of the valve at regular intervals, not only prevent ball valve fouling, but also solve the lithium battery voltage hysteresis problem.

• Power-down protection function, power off or no power, the microconteoller automatically saves data

• Low voltage protection, when the battery voltage is lower than the set valve, the valve is automatically closed.

Flow point verification parameters and installation size parameters