Yidu Intelligent Technology (Beijing) Co., Ltd
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Prepaid ultrasonic water meter
Scope of application: Logic encryption card IC card water meters are used in residential areas and urban water companies, while CPU card water meters
Product details

product overview

Smart IC card water meter is a new type of water meter that uses modern microelectronics technology, modern sensing technology, and smart IC card technology to achieve water quantity measurement, water use control, data transmission, and transaction settlement. This meter is used to measure the flow rate of cold/hot water in pipelines. The product complies with GB/T778-2007 and CJ/T133-2012 product standards. Yidu IC card water meters can be divided into contact and non-contact series water meters. Contact type water meters can be divided into logic encryption cards and CPI cards based on the card medium, while non-contact type water meters are RF cards. Its application has completely changed the traditional household meter reading mode in the past, realizing the water use mode of payment before water supply, greatly facilitating the water supply management department and users.

scope of application

Logic encryption card IC card water meters are used in residential areas and urban water companies, while CPU card water meters are mainly used in large water companies. Radio frequency intelligent purified water is used for direct drinking water metering and control in homes, apartments, hotels, commercial buildings, and other production areas.

Function and characteristic

  • Prepaid function

    The water sales department recharges through IC cards, and the user function inputs the amount to the water meter through the IC card. The amount is automatically deducted when using water, and the valve is automatically connected after the amount is used up

  • Query function

    Users can check the remaining amount, water consumption, and other related information on the LCD screen of the water meter

  • One table, one card

    After the user inserts a card (swipes the card) into the water meter for the first time, the card is automatically bound to the water meter. In the future, the user can only use this card to purchase water. If the card is inserted (swipes the card), the water meter will not recognize other user cards.

  • Prevent water accumulation function

    To prevent users from purchasing too much water at once, a limit on the amount of water purchased has been set. To prevent users from hoarding water after multiple purchases, the water meter has set the maximum water consumption. When users recharge, the water meter will automatically calculate the available water volume. When the available water volume exceeds the limit, the user's recharge will not be successful. Users only need to use up a certain amount of water before recharging. In this way, the water price can also be adjusted in a timely manner in the table.

  • Card replacement function

    After losing the card, users can go to the water sales department to get a replacement card, and the amount in the original card will not be lost.

  • Abnormal valve measurement function

    If a malfunction occurs and cannot be shut down, it will result in "overdrawn" water volume. The controller will automatically record the 'overdrawn' water amount and automatically deduct it from the user's water purchase card by writing back the overdrawn water amount on the next recharge.

  • Regular valve opening and closing function

    The water meter will automatically switch on and off once when the set time is reached, which can achieve the function of ball valve descaling and battery discharge.

  • Anti strong magnetic interference function

    The measuring sensor of the IC card water meter, the reed switch, is a magnetic switch. When it encounters strong external magnetism, the reed switch will be in a normally open or normally closed state, which will affect the electronic measurement of the water meter.

  • Power failure protection function

    Whenever there is a power outage, all operational data will be stored in the table memory for up to ten years.

Basic technical parameters

Execution standards

CJ/T133-2012

Waterproof grade

IP65, IP8 (fully waterproof)

ambient temperature

-20℃~70

structure

Integrated, split type

operation temperature

0.1℃~40℃

Static power consumption

<50μA

Electronic resolution

0.1t/imp

Maximum working pressure

1.0MPa

pressure loss

≤0.06MPa

accuracy class

level 2

Number of card insertions and removals

Over 10000 times

Maximum allowable error:

From the low zone including the minimum flow rate (Q1) to the low zone excluding the boundary (Q2) ± 5%

From the low zone including boundary flow (Q2) to the low zone including overload flow (Q4) ± 5%

Supply Voltage

3.0/3.6V (lithium battery), battery life ≥ 6 years

Installation method

Horizontal and vertical (vertical water meter)

External dimensions and flow parameters

Nominal diameter

External dimensions

Traffic parameters

Unit (mm)

Length (mm)

Width (mm)

Height (mm)

Connection thread length (mm)

Overload flow

Common traffic

Boundary flow rate

Minimum flow rate

15

165

69

115

259

3.125

2.5

0.05

0.03125

20

195

85

115

299

5.0

4.0

0.08

0.05

25

225

119

100

345

7.875

6.3

0.126

0.07875

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