IC/RF card Smart Prepaid Type Water Meter DN15-DN25

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