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1. General
LXSZ type Stepped Tariff RF Card prepaid water meter is realizing the prepaid function through the application of Radio Frequency technology and the smart management system, it provides a perfect solution for the Water Authority. The smart module features in accuracy and stabilities.
The prepaid water meter is in compliance with ISO4064, GB/T 778.1~778.3-2007, JJG 162-2009, JC/T 133-2007 etc. National and international standards.

2. Functions
2.1 Processing Management
1) Total Use Data Statistics
The prepaid water meter will accumulate the total consumption automatically.
2) Meter Recharge
User can recharge the RF card in Water Authority Office, and put the RF card in the sensor zone of water meter, the backlit of the LCD will be waken up and LCD display CD03, at the same time the buzzer ring, recharging meter finish.
3) Stock Limitation
The stock limitation of the water meter could be set through the user card, the total value refer to the sum of current purchasing value and the stock in the water.
4) Warning Value
When the Water Credit equals to the Warning Value, the valve will be closed. The meter valve can be activation by user card and continue to use until the balance to zero.
5) Overdraft Value
If the overdraft value is set in the system, the meter can continue working until the overdraft value is finished. The user can open the valve by user card when the warning value reached.
6) Parameters Setting
The parameters of the meters such as warning value, stock limitation etc. Can be set through the initialization card or user card.
2.2 Anti Magnetic Field
The meter valve will be automatically closed when the meter is interrupted by the external magnetic field. The user card can active the meter.
2.3 Battery
When the battery capacity is 85% of the initial value, the meter valve will be closed, reminding user to replace the battery, and the user must replace the battery. Meter can be activation by user card.