Anti-tamper class B non-return valve split keypad prepaid water
meter with CIU
Product introduction
The STW36-B is an STS standard split keypad prepaid water meter
with CIU.This prepaid type is so-called pay as you go,if no
credits,people must recharge to get water.The keypad meter with
IP68 can be installed outside no matter rainy or sunny.Utility can
set step price into meter on request.Anti-tamper magnetic filed
protection is necessary for utility to help revenue water and
manage consumer.TOKENS can be recharged and information can be
checked by short code with CIU. This CIU is RF-LoRa module inside
to have remote communication.
Metrological Parameters of different size
| Size | DN15 1/2” | DN20 3/4” | DN25 1” |
| Length(L) | 165/190 | 190 | 225/260 |
| Width(W) | 99 | 99 | 103 |
| Height(H) | 104 | 106 | 114 |
| Connecting Thread | G3/4B | G1B | G1-1/4B |
| Overload flow rate Q4 | 3.13 | 5 | 7.87 |
| Permanent flow rate Q3 | 2.5 | 4 | 6.3 |
| Transitional flow rate Q2 | 0.04 | 0.064 | 0.1 |
| Minimum flow rate Q1 | 0.025 | 0.04 | 0.063 |
| Ratio ”R” Q3/Q1 | 100 | 100 | 100 |
Features
✽ Maximum working pressure: 16 Bar
✽ Maximum pressure loss: 0.6 Bar
✽ Maximum reading: 99999
✽ Working temperature: <50℃
✽ Error: Q1≤Q≤Q2 5%;
Q2≤Q＜Q4 2%
Meter Dimension
Function
1. Handy remote keypad, as Customer Interface Unit(CIU)
2. Muti-jet dry dial register construction
3. Ratio “R” Q3/Q1=R100
4. Perfectly water proof IP68
5. Prepaid and post-paid switch
7. Pre-programmable low credit warning
8. Automated meter reading and Valve controlling
9. Long time data storage in absence of power
10. CIU Recharging and Reading through RF-LoRa
11. Non-return valve preventing back-flow
12. Stepped tariffs available
Performance indicator of different water meter
| Performance indicator | Traditional postpaid water meter system | Prepaid water meter system |
| Revenue Collection Efficiency | 50%-70% | 100% |
| Billing Efficiency | 30 Days-120 Days | 100% 90% |
| Debtor Days(reduction) | 50%-60% | 0 Days |
| Operational Efficiency | 30%-50% | 90%-100% |
| Automation | 50% | 100% |
| Meter Maintenance | 50% | 100% |
Product Conclusion
Water meter is a kind of measurement and data transmission of water
consumption by using modern microelectronic technology and modern
sensing technology.The new type of water meter for delivery and
settlement is a great improvement compared with the traditional
water meter, which only has the function of flow collection and
mechanical pointer showing water consumption.In addition to
recording and displaying water consumption electronically, smart
meters can also control water consumption as agreed.
