The ultrasonic heat meter measures the flow volume and display the heat energy released or absorbed by water flow when passing though the heat exchange system.
The temperature range is 4~95ºC.
Measurement unit: Kwh, Gcal
Communication Interface choice:
1. M-BUS
2. RS-485
3. Pulse output
4. LoRa/LoRaWAN
5. Water Meter Impulse output, connects Heat Meter, M-BUS/RS-485 output
Models and Specifications
| Model | Qn(m3/h) | Length(mm) | DN(mm) | Sensor length | Display | Communication interface | Class |
| RLM(L)-15-0.6 | 0.6 | 110 | 15 | 1.5m | Kwh, Gcal | 1.M-BUS 2.RS-485 3.Pulse output 4. LoRa/ LoRaWAN 5.Water Meter Impulse output, connects Heat Meter, M-BUS/RS-485 output. | 2 |
| RLM(L)-15-1.5 | 1.5 | 110 | 15 | ||||
| RLM(L)-20-2.5 | 2.5 | 130 | 20 |
Features:
1. Lithium battery life: 10 years
2. Archive: 38 Month data historical( M-BUS, RS-485, Pulse output )
3. Installation choice: Water supply pipeline or Water return pipeline
4. Horizontal or Vertical installation
5. Accuracy: Class 2, meets EN1434
6. Measuring range (q s/q i =100:1)
7. Temperature sensor: PT 1000
8. Environment standard Class: A
9. Min. temperature difference: 3ºC
10. Water pressure: ≤1.6Mpa
Main Technical Parameters:
| Normal DN | mm | 15 | 15 | 20 | |||
| Qn | m3/h | 0.6 | 1.5 | 2.5 | |||
| Qmax | m3/h | 1.2 | 3 | 5 | |||
| Qmin | m3/h | 0.012 | 0.03 | 0.05 | |||
| Body thread | ---- | G3/4"B | G3/4"B | G1"B | |||
| Connection thread | ---- | 1/2" | 1/2" | 3/4" | |||
| Height | mm | 115 | 115 | 105 | |||
| Length | mm | 110 | 110 | 130 | |||
| Pressure loss(KPa/Qp) | 4 | 18 | 11 | ||||
Temperature sensor pair: PT 1000
Installation:
