Hebei Shanghong Meters Technology Co., Ltd. is one of the leading manufacturers and suppliers of 3/4'' residential sim card smart prepaid water meter with shut off in China. If you're going to wholesale high quality 3/4'' residential sim card smart prepaid water meter with shut off, welcome to get pricelist and quotation from our factory.
Application of IC card smart prepaid water meter
IC card prepaid water meter is the new measuring instrument employing the microprocessor to realize water collection, processing, display and reserving. It is a kind of smart water meter. Compared with traditional way, it can control user's overspend by prepaying for an IC card.
Features of IC card smart prepaid water meter
1.using pre-paid way to achieve the new management mode of "purchase first, then use"
2.show the different level price of the water, one card can be used to serval meter.
3.double reading display: mechanical and digital meter reading
4.the unique battery protection
5.stable performance, wide application.
6.Low power consumption, long life time.
Working Conditions
Water temperature (cold water): ≤40°C
Water temperature (hot water): ≤90 °C
Water pressure: ≤ 1.0 Mpa
Main technical data
(Ⅰ) Technical specifications
Item | Unit | Details | ||
Nominal diameter | mm | 15 | 20 | 25 |
Q3/Q1 | R80/R100 | |||
Overload flow(Q4) | m³/h | 3.125 | 5 | 7.875 |
Nominal flow(Q3) | m³/h | 2.5 | 4 | 6.3 |
Transitional flow(Q2) | m³/h | 0.05 | 0.08 | 0.13 |
Minimum flow(Q1) | m³/h | 0.031 | 0.05 | 0.08 |
Accuracy class | Class 2 | |||
Maximum indication | m³ | 99999 | ||
Temperature class | T30,T90 | |||
Pressure class | MAP 10/MAP16 | |||
Pressure loss class | ΔP63 | |||
Flow prefile sensitivity class | U10/D5 | |||
environmental class | Class B | |||
Electromagnetic environment class | E1 | |||
Static current | uA | <10 | ||
(Ⅱ) Relative error
·Maximum permissible error between Q1 and Q2(excluded) is ±5% in flow low area.
·When the water temperature is not higher than 30℃, maximum permissible error between Q2 and Q4(included) is ±2% in flow high area.
·When the water temperature is higher than 30℃, maximum permissible error between Q2 and Q4(included) is ±3% in flow high area.
(Ⅲ) Working temperature: cold water (0.1~30)℃
(IV) Operating ambient temperature: (5~55)℃
(V) Storage environmental temperature: (-5~55)℃
Fault handling instructions
Item | Fault display | Fault explanation | Elimination methods |
1 | Under voltage | Low battery | Contact the manufacturer |
2 | Flow | Flow sensor signal failure | |
3 | Valve open/close | Valve sticking rusting or scaling | |
4 | Can not read card | Write card erroror take the wrong card | Go to water supply department to test the card |
Outline dimensional drawing
Nominal Diameter | Length L | Length L1 | Width B | Height H1 | Height H2 | Connecting Thread | |
mm | d | D | |||||
15 | 258 | 165 | 90 | 112 | 184 | R1/2 | G3/4B |
20 | 299 | 195 | 90 | 112 | 184 | R3/4 | G1B |
25 | 345 | 225 | 90 | 114 | 186 | R1 | G11/4B |
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