What is the details for  Noncontact System Management Radio Frequency Prepaid Water Meter 15mm-25mm ?

Our prepaid water meter has two type ,ic card type and RF card type. The IC card type ,you can insert thr IC card to the slot ,and RF type ,you can swiping the IF card.
Brief introduction :
This Water meter IC smart prepaid water meter is developed from wet-type basic water meter ,composed of microchip module,controlling valves, LED display ,card & card reader and accounting management systerm. The figure of water volume is displayed directly on the screen and the water using could be controlled as prepaid method.

 Specification for Prepaid Water Meter

1.the basic meter is made of brass materials and the plastic part is Environment Friendly

2.Multi -jet ,wet dial

3.the battery has 6 years service life

4..warranty: 2 years

6.Supply ability:100000 pcs per month

7.Free sample one piece is avaible ( but you need pay to us the sample fee and freight charge first to show the sincerity to coopertae with each other and we will return back the sample fee to you when we order to us

8. .using pre-paid way to achieve the new management mode of "purchase first, then use"

9.double reading display: mechanical and digital meter reading

10 stable performance, wide application. Technical Data for Prepaid Water Meter

Item

Functions

Display

LCD screen

Display status of input water volume, surplus water volume, total volume, payment, closed, open, error, low battery, under attack

Digital show

maximum total water volume9999.9m³

Water supply control

Auto closes the valve when water volume is little, and open when inserting new prepaid card.

Auto control

Low battery alarm

Auto closes the valve when battery is low, prompt to change the battery.

Hardware security

Auto closes the valve when the pulse line is cut off, and alarm under attack, which must repaired by administrator.

Anti magnetic attack

Auto closes the valve when strong magnetic close to the meter, need inserting card to reopen the meter.

Power off detection

Detecting the circuit after power up to check normal or not.

Waterproof

Reading card as normal even the meter part is in water.

Auto maintenance

Automatic switch valve for discharge once a month.

Water quota

You can set a limit to use water. Unable to input water volume more than limit.

Zero-crossing solution

User information would feedback to the superior software for processing when the valve failure to close in zero-crossing. Extra water volume will be record.

Working features

Moisture-proof

pulse line

The pulse output is not affected by moisture, data will record as normal.

Multi-application card

The first inserting of card in a new water meter will write in Card No. User ID, Water Volume. A card would serve in a total of 4 set of cold water meter, hot water meter, heat meter and pure-water meter at the same time.

Data Recovery

When the meter is damaged, please insert the read-in card to collect user data and transfer data by inserting to a new meter.

Initialization

Remove all information in the meter by inserting Initialization card, and set the starting line of water meter.

Control card

When the meter break down, please insert control card to detect fault or to force the valve open.

Card Reissue

You can register a new card with original data if lost the user card.

Model (DN)

15D

20D

25D

Overload Flow

Qmax(m3/h)

3

5

7

Normal Flow

Qn(m3/h)

1.5

2.5

3.5

Transitional Flow

Qt(m3/h)

0.12

0.2

0.28

Min.Flow

Qmin(m3/h)

0.03

0.05

0.07

Technical Standards

ISO4064,GB/T778,JB/T8802,JJG686,CJ/T133

Valve Life

≥5,000 times

IC Card Life

≥100,000 times

Min.Reading

0.0001 m3

Max.Reading

99999 m3

Power Supply

3.6V lithium battery, life≥6 years

Security

Unique Card/Meter

IC Card Life

≥ 100000 times

Static Working Current(uA)

≤6

Error Qmin to Qt

≤±5%

Error Qt to Qmax

≤±2%

Working Condition

Indoor using, relative humidity ≤93%,

Cold water Meter ≤40°C,Hot water meter≤90°C,

Water quality conforms to the National tap water standard