1. General LXHZ type Stepped Tariff prepaid water meter is realizing the prepaid function through the application of wirless 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. When the battery use up, the meter valve will be closed and LCD display EC01, the data of the water meter will be saved to the FLASH. 2.4 Warning When user has operations such as replacing the battery, recharging the meters, or the event like external magnetic influence happens, the LED, Buzzer and LCD will be working properly, the LCD display information can refer to 5.2. User Card can transfer battery voltage, magnetic interfering times etc. Information to the management system, for providing the evidence to judging meter running status.