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.

Technical Specifications:

Diameter （mm）	qn （m³/h）	qmin （m³/h）	qmax （m³/h）	Length (mm)
DN50	15	0.6	30	200
DN65	25	1	50	200
DN80	40	1.6	80	225
DN100	60	2.4	120	250
DN125	100	4	200	250
DN150	150	6	300	300
DN200	250	10	500	350
DN250	400	16	800	450
DN300	600	24	1200	500
DN350	750	30	1500	500
DN400	1000	40	2000	500
DN450	1200	48	2400	500
DN500	1500	60	3000	500
Range ratio	R25
Measurement Accuracy	EN1434、CJ128-2007 Class2
Connection	Flange
Pressure Loss	≦20KPa
Pressure Level	≦1.6MPa
Temperature sensor	3 m standard two lines PT1000 Temperature Sensor （cable length could be changed）
Data Storage	Continuous store of 38 months record
Power-off Protection	After power-off, meter could save all the record of before flow rate and the corresponding time, after power back, it recovery measure function automatically, and ensure the time continuation
Communication mode	Wired: Mbus, Modbus, RS485, Pulse Output       Wireless: LoRaWAN, NB-IoT
Power Supply	ER18505 Lithium battery (waterproof)
Protection Class	IP68
Environmental Class	Class B
Temperature Range	（4～95）℃
Temperature Difference	(3～70)K
Installation Way	Inflow or Return flow installation（Default is Inflow installation, for return flow need to indicate when ordering）
Battery Life	10 years
Display	LCD display
Anti-magnetic Disturbance	When the intensity of magnetic field interference is not more than 100 ka/m, should not affect water meter measurement and remote transmission characteristics

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 =50:1)
7. Temperature sensor: PT 1000
8. Environment standard Class: B
9. Min. temperature difference: 3℃

10. Water pressure: ≤1.6Mpa