STW36-T Ultrasonic LoRa-RF Remote Reading Water Meter launched by STRON combined years’ experience in metering research and development, adopting new technology of Ultrasonic flow converter GP30 from ACAM Germany. STW36-T is reliable and absolute matured achievement in high accuracy measurement. It has high accuracy reach to R400, and would not measure air, not be effected by sand.
The meter is equipped with latest Semtech LoRa-RF communication unit, allowing it to communicate Data concentrator unit (DCU) and Handheld meter reading unit situated up to 1km away.
Technical Parameters
| Items | Parameters |
| Accuracy | Class 2/B |
| Maximum working pressure | 1.6MPa |
| Temperature grade | T30/T50/T90 |
| EMC grade | E1 |
| LCD Display | 8digit+prompt |
| The sensitivity of upstream flow field | U10 |
| The sensitivity of downstream flow field | D5 |
| Climatic and mechanical environmental grades | B |
| Display ranges | 0~9999.9999m3 |
| Power supply | Battery DC3.6V |
| Comsumption | <0.2mW |
| Protection grade | IP68 |
Main Features
- Low starting flow rate
- Wide measuring range Q3/Q1=R400
- High measurement accuracy Class 2/B
- Low pressure loss, DN15 and DN20: Δp40; DN25 and DN40: Δp63
- Perfectly water tight (IP68)
- Without mechanical movement parts, Long working life
- More than 6years’ battery life
- Wired communication: M-BUS/RS 485; Protocol: EN1434 Modbus, CJ188.
- LoRaWAN Wireless communication, 470MHz/868MHz/915MHz
- Non- return valve preventing back-flow
- Open flow components, free from the influence of impurities in water
Metrological Parameters
| Nominal Size | mm | DN15 | DN20 | DN25 | DN32 | DN40 |
| Start flow rate | m³/h | 0.002 | 0.005 | 0.005 | 0.01 | 0.01 |
| Minimum(Q1) | m³/h | 0.0062 | 0.01 | 0.0157 | 0.025 | 0.04 |
| Transitional(Q2) | m³/h | 0.010 | 0.016 | 0.0252 | 0.04 | 0.064 |
| Permanent(Q3) | m³/h | 2.5 | 4.0 | 6.3 | 10 | 16 |
| Overload(Q4) | m³/h | 3.125 | 5.0 | 7.875 | 12.5 | 20 |
| Range ratio=Q3/Q1 | 400 | 400 | 400 | 400 | 400 | |
| Maximum Operation Pressure | 1.6Mpa | |||||
| Maximum Pressure Loss | △P<63Kpa | |||||
| Maximum Working Temperature | 55℃ | |||||
Accuracy Curve
Remote Reading Solution
