Ⅰ.Description

The prepaid water meter is new type of smart water meter that uses modern microelectronic technology, modern sensing technology, and smart IC card
technology to measure water consumption and conduct water data transmission and settlement transactions. It adopts a pre-paid method, which not only
achieves reasonable charging, it will also automatically close the valve when the meter is in arrears.

Ⅱ.Product Features

1.Low start-up flow;

2.Base meter adopts of 4-digit pointer, 5-digit character roller for easy and clear

reading；

3.Valve adopts rotary-wing construction, with small switch torture distance;

4.Long lifespan, reliable,integated meter body and valve, rational construction;

5.One-card, one-meter with encipherment protection, security guaranteed; valve automatically shut off when impacted by strong magnetic field action

6.Multiple customer type optional, 3 ladder water volumes settable, 3 ladder unit prices settable

7.Leakage flow ≤2L/h

Ⅲ. Technical Parameters

1.Flow Range

2.Relative Error

Maximum allowable error Q1 – Q2 ± 5%.

Maximum allowable error Q3 – Q4, water temperature ≤30°, max permissible

error ± 2%; water temperature ＞30°, max permissible error ± 3%.

3.Working temperature:（0.1～30） ℃.

4.Working pressure: ≤1.0MPa.

5.Pressure loss: ≤0.063MPa

6.Installation environment: Class B, indoor, fixed type installation

7.Electromagnetic environment: E1 - residential, commercial, light industrial

8.Working Current: Static: ＜10uA

9.Flow profile sensitivity class: U10, D5

10.Storage ambient temperature:（5～50） ℃

12.Installation size

Ⅳ. Operating Instructions

1.Users should be account opening, archiving at the water management office when using the water meters for the first time, buying subscriber card with corresponding water volume. The subscriber card can be used on specified water meter only during the first use lest for unnecessary loss.

2.Tap the user card on the touch area, it means card reading is being processed when the LCD shows 【rd IC】; If it shows【END】, it means card data
storage completed; If it shows【Err XXX】 means error arises, Please retry, if error continues, contact the management department then; (Light will flash when card data storage is in process)

3.The water meter automatically shuts down the valve and sends alarm when the remaining water volume of the meter less than the warning value set theuser can put again the card in water meter touch area to open the valve, the water meter continues to work. The valve of meter is automatically shut down when the remaining volume decreases to zero, the meter can be opened only after the subscriber buy the credits and do the top-up. By that reminds the subscriber of timely top-up.

4.The water meter will shut the valve off when under voltage arises, and the valve can be opened only after the malfunction is removed.

5.The Card reissue need to be handled with at the management endpoint in case the card is lost, and in the meantime, the previous subscriber card will automatically be invalid;

6.Use a info transfer card to have info of water meter transferred into a new meter when current water meter need to be replaced, the subscriber card
can continue to work.

7.The pointer of water meter will slightly fluctuate when meter under unused condition due to the water pressure in the pipeline is not stable or any other reasons, this is the normal phenomenon.

Ⅴ. Installation Instructions

1.The water meter with proper caliber should be choosed according to diameter of pipeline at installation site and principle of flow ≤ usual flow of
meter

2.10×DN(Water meter diameter) straight pipe before meter and 5×DN straight pipe after meter should be reserved.

3.The water meter should be installed in a location where the administrator can easily read the meter. and avoid being approached by solarization, flooding ,pollution and foreign magnetic interference. When the temperature is too low (<0 °C), the administrator should take care to keep the water meter warm to avoid damage to the water meter.

4. Debris like sand and grits should be prevented from entering the pipe line when installation(especially with new pipe section),which might lead to
measuring faults and valve blockage

5. For accurate measurement’s sake,during installation,pipe line at outlet
flow should be installed 0.5m higher than meter,valve should be installed at pipeline before water meter so that water supply can be stopped when meter need to be dismounted .Water meter shouldn’t be directly connected to the pipeline, movable joints like couplings ,connecting nuts ,connecting pipe sealing washer are needed. Rough handling is forbidden when dismounting.

6.Indicating arrow engraved on meter should comply with direction of water flow when installation. Installation must follow horizontal or vertical type signed on dial register and let dial face up.

7.Installation diagram:

Ⅵ.Malfunction Removal

Note：The meter is supposed to be changed by specially-assigned person. Any replacement done by user is forbidden. Each meter with extension piece(2 couplings, 2 connecting nuts and 2 seal rings).

Ⅶ. Transport & Storage

1.Transport: The product should be transit by vehicles without strong vibration after the encasement and avoid being approached and affected by
rains, frost, fog, placing as per sign―This is necessary to prevent damage from crushing and impact. Environmental conditions of transport to comply
with JB/T9329 standard.

2. Storage: The meters should be stored at dry, ventilated indoor environment and in which forcible magnetic field action doesn’t exist and air
must be of no corrosive medium. Ambient temperature 5℃～50℃, relative humidity ≤90%

Ⅷ. Warranty

One year free maintenance service offered with the smart water meter since the delivery date. Lifetime maintenance, however, damage caused by
the following operations excluded in the warranty:

1.The seal marks of the water meter parts is opened or damaged

2.Parts of the water meter are humanly damaged

3.Parts of the water meter are approached by sun light, flooding, freezing
and chemical pollutions

4.No debris and impurities are removed from the pipeline, causing the valve
in the water meter to clog

5.Damages and faults due to choosing the inappropriate product model No.
Remarks: The battery of the water meter is supposed to be changed by
specially assigned person.

Contact the factory if under voltage arises