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District heating companies, municipal heating utilities and large commercial facility operators face long-standing challenges: inaccurate heat metering across wide flow fluctuations, high manual meter-reading costs, difficulty in pipeline network balancing, and lack of data support for energy efficiency optimization. Our DN50-DN200 Ultrasonic Heat Meter for District Heating is purpose-built for large-caliber heat metering at regional, building and industrial-commercial user levels, serving as a core terminal for smart heating systems. With industry-leading ultrasonic measurement technology and robust communication capabilities, it delivers high-precision heat metering across extreme flow ranges, real-time remote data transmission, and full data support for system balancing, energy efficiency analysis and fault diagnosis.
This large diameter ultrasonic heat meter achieves a maximum range ratio up to R500, enabling accurate measurement from extremely low flow rates in nighttime/transition seasons to peak flow rates in severe cold periods, eliminating metering deviations of traditional heat meters in variable flow conditions. It uses high-precision PT1000 temperature sensors with 0.01℃ resolution for supply and return water temperature monitoring, maintains Class 2 accuracy, and supports dual-mode metering for both heating and cooling energy, adapting to year-round HVAC system requirements.
The meter supports multiple mainstream communication protocols including M-Bus, RS485, NB-IoT and 4G, enabling automatic upload of heat consumption data to a cloud management platform. It empowers heating operators with remote data monitoring, energy consumption analysis, pipeline network balancing and fault early warning, drastically reducing on-site operation costs and improving the refined management level of heating pipelines.
Powered by a high-capacity DC 3.6V lithium battery, the meter delivers a service life of over 10 years without battery replacement, meeting the long-term operation needs of district heating projects. It features an IP68 protection rating, 1.6MPa maximum working pressure, and stable operation in -25℃~55℃ ambient temperatures, with pressure loss ≤25kPa to avoid additional energy consumption of the heating system. It supports both horizontal and vertical installation, with a multi-angle display head for flexible on-site reading.
Equipped with an 8-bit LCD display, the meter shows real-time and cumulative data including cumulative heat/cooling energy, thermal power, supply/return water temperatures, temperature difference, cumulative/instantaneous flow, power-on time and alarm records. It supports complete historical data traceability, meeting the metering audit and compliance requirements of heating utilities and energy management departments.
Performance | Core Parameters |
Accuracy Class | Class 2 |
Nominal Diameter | DN50~DN200 |
Max. Range Ratio | Up to R500 |
Max. Working Pressure | 1.6MPa |
Ambient Temperature Range | -25℃~55℃ |
Medium Temperature Range | 4℃~95℃ |
Temperature Resolution | 0.01℃ |
Protection Rating | IP68 |
Power Supply | DC 3.6V Lithium Battery |
Battery Life | 10+ years |
Communication Options | M-Bus / RS485 / NB-IoT / 4G (Optional) |
Flow Data
Nominal Diameter DN（mm） | Range ratio | qs（m³/h） | qp（m³/h） | qi（m³/h） |
50 | 100 | 30 | 15 | 0.15 |
65 | 50 | 25 | 0.25 | |
80 | 80 | 40 | 0.4 | |
100 | 120 | 60 | 0.6 | |
125 | 200 | 100 | 1.0 | |
150 | 300 | 150 | 1.5 | |
200 | 500 | 250 | 2.5 |
Produt Size
Nominal Diameter DN（mm） | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
L（mm） | 200 | 200 | 225 | 250 | 250 | 300 | 350 |
W（mm） | 165 | 215 | 230 | 270 | 300 | 320 | 400 |
H（mm） | 330 | 345 | 360 | 385 | 410 | 460 | 570 |
K（mm） | 125 | 145 | 160 | 180 | 210 | 240 | 295 |
Connecting bolts | 4-M16 | 4-M16 | 8-M16 | 8-M16 | 8-M16 | 8-M20 | 12-M20 |
Installation Diagram
District heating companies and municipal heating utilities for regional pipeline network metering, heat billing and system balancing
Commercial real estate and industrial park operators for building-level heat metering and industrial user energy consumption management
HVAC system integrators and smart heating solution providers for smart heating system hardware supporting and platform integration
Energy Service Companies (ESCOs) for building energy efficiency retrofit projects and energy consumption audit verification
Looking for a reliable large-diameter ultrasonic heat meter for your district heating or energy management project? We provide full support including custom calibration, bulk order solutions, and on-site installation guidance. Reach out to us now for a free technical consultation and personalized quote, and elevate your heating system’s efficiency and management precision.
District heating companies, municipal heating utilities and large commercial facility operators face long-standing challenges: inaccurate heat metering across wide flow fluctuations, high manual meter-reading costs, difficulty in pipeline network balancing, and lack of data support for energy efficiency optimization. Our DN50-DN200 Ultrasonic Heat Meter for District Heating is purpose-built for large-caliber heat metering at regional, building and industrial-commercial user levels, serving as a core terminal for smart heating systems. With industry-leading ultrasonic measurement technology and robust communication capabilities, it delivers high-precision heat metering across extreme flow ranges, real-time remote data transmission, and full data support for system balancing, energy efficiency analysis and fault diagnosis.
This large diameter ultrasonic heat meter achieves a maximum range ratio up to R500, enabling accurate measurement from extremely low flow rates in nighttime/transition seasons to peak flow rates in severe cold periods, eliminating metering deviations of traditional heat meters in variable flow conditions. It uses high-precision PT1000 temperature sensors with 0.01℃ resolution for supply and return water temperature monitoring, maintains Class 2 accuracy, and supports dual-mode metering for both heating and cooling energy, adapting to year-round HVAC system requirements.
The meter supports multiple mainstream communication protocols including M-Bus, RS485, NB-IoT and 4G, enabling automatic upload of heat consumption data to a cloud management platform. It empowers heating operators with remote data monitoring, energy consumption analysis, pipeline network balancing and fault early warning, drastically reducing on-site operation costs and improving the refined management level of heating pipelines.
Powered by a high-capacity DC 3.6V lithium battery, the meter delivers a service life of over 10 years without battery replacement, meeting the long-term operation needs of district heating projects. It features an IP68 protection rating, 1.6MPa maximum working pressure, and stable operation in -25℃~55℃ ambient temperatures, with pressure loss ≤25kPa to avoid additional energy consumption of the heating system. It supports both horizontal and vertical installation, with a multi-angle display head for flexible on-site reading.
Equipped with an 8-bit LCD display, the meter shows real-time and cumulative data including cumulative heat/cooling energy, thermal power, supply/return water temperatures, temperature difference, cumulative/instantaneous flow, power-on time and alarm records. It supports complete historical data traceability, meeting the metering audit and compliance requirements of heating utilities and energy management departments.
Performance | Core Parameters |
Accuracy Class | Class 2 |
Nominal Diameter | DN50~DN200 |
Max. Range Ratio | Up to R500 |
Max. Working Pressure | 1.6MPa |
Ambient Temperature Range | -25℃~55℃ |
Medium Temperature Range | 4℃~95℃ |
Temperature Resolution | 0.01℃ |
Protection Rating | IP68 |
Power Supply | DC 3.6V Lithium Battery |
Battery Life | 10+ years |
Communication Options | M-Bus / RS485 / NB-IoT / 4G (Optional) |
Flow Data
Nominal Diameter DN（mm） | Range ratio | qs（m³/h） | qp（m³/h） | qi（m³/h） |
50 | 100 | 30 | 15 | 0.15 |
65 | 50 | 25 | 0.25 | |
80 | 80 | 40 | 0.4 | |
100 | 120 | 60 | 0.6 | |
125 | 200 | 100 | 1.0 | |
150 | 300 | 150 | 1.5 | |
200 | 500 | 250 | 2.5 |
Produt Size
Nominal Diameter DN（mm） | DN50 | DN65 | DN80 | DN100 | DN125 | DN150 | DN200 |
L（mm） | 200 | 200 | 225 | 250 | 250 | 300 | 350 |
W（mm） | 165 | 215 | 230 | 270 | 300 | 320 | 400 |
H（mm） | 330 | 345 | 360 | 385 | 410 | 460 | 570 |
K（mm） | 125 | 145 | 160 | 180 | 210 | 240 | 295 |
Connecting bolts | 4-M16 | 4-M16 | 8-M16 | 8-M16 | 8-M16 | 8-M20 | 12-M20 |
Installation Diagram
District heating companies and municipal heating utilities for regional pipeline network metering, heat billing and system balancing
Commercial real estate and industrial park operators for building-level heat metering and industrial user energy consumption management
HVAC system integrators and smart heating solution providers for smart heating system hardware supporting and platform integration
Energy Service Companies (ESCOs) for building energy efficiency retrofit projects and energy consumption audit verification
Looking for a reliable large-diameter ultrasonic heat meter for your district heating or energy management project? We provide full support including custom calibration, bulk order solutions, and on-site installation guidance. Reach out to us now for a free technical consultation and personalized quote, and elevate your heating system’s efficiency and management precision.
