The STS (Standard Transfer Specification) originated as an open architecture launched in South Africa in 1993, initially for electricity prepayment token transfer. Later, it was released by the IEC (International Electrotechnical Commission) as the international standard IEC62055-41,51, and now it is also widely used in water and gas meters. The STS Smart Prepaid Water Meter integrates advanced technology to provide efficient, flexible, and reliable water metering and management solutions.
Technical Parameters
|
Items |
Parameter |
||
|
Nominal caliber |
DN15 |
DN20 |
DN25 |
|
Overload Flow Q4(m³/h) |
3.125 |
5 |
7.875 |
|
Permanent Flow Q3(m³/h) |
2.5 |
4 |
6.3 |
|
Boundary flow Q2(m³/h) |
0.04 |
0.064 |
0.1008 |
|
Min Flow Q1(m³/h) |
0.025 |
0.04 |
0.063 |
|
Waterproof Level |
IP68 |
||
|
Working Environment |
-10℃-55℃, ≤100%RH |
||
|
Communication |
LoRa≤1KM, LoRaWAN≤10KM (Actual distance depends on conditions) |
||
|
Battery |
Lithium battery (Er2650,8500mAh); 8 years life time; battery is exchangeable |
||
|
Power supply |
DC 3.6V |
||
|
Display Content |
Balance, purchased water, used amount,consumed water, Voltage, version Nos, etc |
||
|
Static Currency |
<20uA |
||
|
Max reading |
99999℃ |
||
|
Max Permissible Error |
Q1≤Q≤Q2: ±5% Q2≤Q≤Q4:±2% |
||
Core Advantages
In addition to the basic functions of a prepaid water meter, this copper pipe prepaid water meter has the following core advantages.
Compatibility: Realizes interoperability between system components produced by different manufacturers of prepayment systems, breaking the barrier of brand-specific incompatibility.
Easy Data Transfer: Transfers water credit/volume via a 20-digit token, eliminating the need for external data transfer media (token-less), which simplifies the data transmission process.
Flexible Water Purchase: Supports switching between prepaid and postpaid modes. Customers can purchase water through designated agencies via POS or cash, or self-service via mobile phones using APP, USSD, or e-payment, meeting diverse consumption habits.
Reason to Choose Copper Pipes
Compared with plastic-pipe water meters, copper pipe prepaid water meter have the following advantages.
Strong pressure resistance, suitable for cold & hot water: Withstands high pressure (usually 2.0Mpa), works for both cold and hot water pipes, ideal for high-pressure scenarios like high-rise water supply.
Impact-resistant & durable: Copper is tough and strong, not easy to break when hit during transportation or use, ensuring longer service life.
Temperature-resistant & fireproof: Hardly deforms or cracks at high temperatures, small thermal expansion/contraction, good fire resistance to reduce fire risks.
Long-term stability: Not easy to rust in most water quality; though "copper green water" may occur in special soft water, it's still more durable than some plastic meters after treatment.
