Touchless Prepaid Water meter
Radio Frequency IC Card Water Meter
Application
Measuring the volume of cold potable water passing through the pipelineWork Conditions
Water temperature : 0.1°C- 40°CWorking Humidity ：≤ 93°C
Water pressure : ≤1.0 Mpa
Brief Introduction
RF Card Prepaid Water Meter is developed from dry-type basic water meter, composed of microchip module, controlling valves,LED display, RF Card & reader, and accounting management system.
★ The figure of water volume is displayed directly on screen
★ The water using could be controlled as prepaid method
Features
Multi jet, dry dial; Brass body, electronic meter;Battery life is more than 6 years based on low power consumption design, low battery alarm;
Accurate measure due to anti-jamming and magnetic features based on non-magnetic sample patents technology;
Item |
Function |
|
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 volume 9999.9 m3 |
|
Water supply control |
Auto closes the valve when water volume is little, and open when inserting new prepaid card. |
|
Low battery alarm |
Auto closes the valve when battery is low, prompt to change the battery |
|
Auto Control |
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 |
DN(mm) |
Q4 (m3/h) Overload flow-rate |
Q3 (m3/h) Permanent flow-rate |
Q2 (m3/h) Transitional flow-rate |
Q1 (m3/h) Minimum flow-rate |
15 |
3 |
1.5 |
0.12 |
0.03 |
20 |
5 |
2.5 |
0.2 |
0.05 |
25 |
7 |
3.5 |
0.28 |
0.07 |
100 |
||||
200 |
★ Technical standards: ISO4064,GB/T778,JB/T8802,JJG686,CJ/T133
★ Valve Life ：≥5,000 times
★ RF Card Life :≥100,000 times
★ Power Supply : 3.6V lithium battery, life≥6 year
★ Security : Unique Card per Meter, uncopiable
★ Static Working Current (μA)：≤6
Options
★ Meter for hot water up to 90°C is available，93% RH.★ Vertical water meter of this type is available.
Maximum permissible error
From the minimum flow rate Q1 to the lower zone of the transitional flow rate Q2 :≤±5%From the transitional flow rate Q2 to the high zone of the maximum flow rate :≤±2%
 |
Dn (mm) |
L1 (mm) |
L2 (mm) |
H (mm) |
Contecting Thread |
|
Joint |
Nut |
|||||
15 |
165 |
259 |
105 |
R1/2" |
G1/2" |
|
20 |
195 |
298 |
105 |
R3/4" |
G3/4" |
|
25 |
225 |
345 |
215 |
R1" |
G1" |
|
Installation requirements
★ Clean the foreign matter from the inside pipe.★ This kind of water meter couldn't be spoiled in the hot sun,humid, freeze,chemistry,electronic pollution, easy for dismantle,reading, and credit the user card.
★ Horizontal install/ Vertical install, the direction mark should in accordance with the flow direction. Leave length about 6-12 times of the pipe diameter at the front of the water meter, and length about 4-6 times of the pipes diameter at the back of the water meter for the accuracy measurement.
