DN15-DN40 BTU Meter/Ultrasonic Heat Meter Cooling and Heating Measuring ULTB-15~40
The temperature range is 4~95℃.
Measurement unit: Kwh, Gcal, GJ
Communication Interface choice:
1. M-BUS
2. RS-485
3. Pulse output
4. LoRa/LoRaWAN( 868 MHz)
5. Water Meter Impulse output, connects Heat Meter, M-BUS/RS-485 output
6. NB-IoT
BTU Meter & Energy Measurement
BTU meters are engineered for precision measurement across diverse systems such as：
• Heating, Ventilation, and Air Conditioning（HVAC)
• Building Management Systems (BMS)• Domestic Hot Water (DHW)
• District Cooling Systems (DCS)
• District Energy Systems (DES)
• Industrial & Commercial (I&C) applications etc.
Models and Specifications
| Model | Qn (m3/h) | Length (mm) | DN (mm) | Sensor length | Display | Communication interface | Class |
| ULTB-15-0.6 | 0.6 | 110 | 15 | 1.5m | Kwh, Gcal , GJ | 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 |
| ULTB-15-1.5 | 1.5 | 110 | 15 | ||||
| ULTB-20 | 2.5 | 130 | 20 | ||||
| ULTB-25 | 3.5 | 160 | 25 | ||||
| ULTB-32 | 6 | 180 | 32 | ||||
| ULTB-40 | 10 | 200 | 40 |
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: 3℃
10. Water pressure: ≤1.6Mpa
Main Technical Parameters:
| Normal DN | mm | 15 | 15 | 20 | 25 | 32 | 40 |
| Qn | m3/h | 0.6 | 1.5 | 2.5 | 3.5 | 6 | 10 |
| Qmax | m3/h | 1.2 | 3 | 5 | 7 | 12 | 20 |
| Qmin | m3/h | 0.012 | 0.03 | 0.05 | 0.07 | 0.12 | 0.2 |
| Body thread | ---- | G¾"B | G¾"B | G1"B | G1¼"B | G1½"B | G2"B |
| Connection thread | ---- | ½" | ½" | ¾" | 1" | 1¼" | 1½" |
| Height | mm | 85 | 85 | 95 | 105 | 105 | 115 |
| Length | mm | 110 | 110 | 130 | 160 | 180 | 200 |
| Pressure loss | ≤0.02MPa | ||||||
Temperature sensor pair: PT 1000
Installation
