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Our YG-RLM(G) series custom single-jet heat meter is a new-generation integrated single-flow thermal energy meter, engineered specifically for high-demand markets in Europe and Russia. Designed for residential and light commercial HVAC systems, this smart heat meter leverages advanced nonmagnetic sensing technology to deliver stable, high-precision thermal measurement across variable operating conditions. With a 4℃ to 95℃ working range and 3℃ minimum detectable temperature difference, it supports dual metering of heating and cooling energy, with optional kWh or Gcal units to align with regional billing standards. This meter fully meets Class 2 accuracy requirements of EN1434 and CJ128 standards, making it an ideal solution for custom energy management projects for commercial partners and bulk buyers.
As a dedicated custom heat meter manufacturer, we offer full flexibility to modify communication protocols, display units, installation configurations, and sensor specifications to match your project’s unique requirements, ensuring seamless integration with existing building management systems (BMS) and utility billing platforms.
Our single-jet heat meter features a 100:1 measuring range ratio (qs/qi) and ultra-low startup flow rate, capturing even minimal energy usage to eliminate revenue loss for utility operators. The nonmagnetic sensing technology eliminates magnetic interference and wear, ensuring long-term stability of measurement accuracy.
This remote reading heat meter supports optional M-BUS, RS-485, and pulse output, enabling real-time remote data collection, consumption monitoring, and smart billing. It offers renewable settlement date settings and 18-month on-board data storage, providing full data traceability for audit and compliance needs.
Built with a robust housing and high-quality components, the meter supports horizontal and vertical installation to fit tight pipeline spaces, with an embedded removable structure to prevent damage during commissioning. The high-capacity lithium battery delivers over 6 years of service life, reducing maintenance costs and downtime for long-term commercial projects.Technical Specifications
Model | Qn(m3/h) | Length(mm) | DN(mm) | Sensor length | Display | Romote | Class |
RLM(D)-15-0.6 | 0.6 | 110 | 15 | 1.5m | kw/h | M-BUS | 2 |
RLM(D)-15-0.6 | 0.6 | 110 | 15 | 1.5m | Gcal | RS-485 | 2 |
RLM(D)-15-1.5 | 1.5 | 110 | 15 | 1.5m | kw/h | M-BUS | 2 |
RLM(D)-15-1.5 | 1.5 | 110 | 15 | 1.5m | Gcal | RS-485 | 2 |
RLM(D)-20-2.5 | 2.5 | 130 | 20 | 1.5m | kw/h | M-BUS | 2 |
RLM(D)-20-2.5 | 2.5 | 130 | 20 | 1.5m | Gcal | RS-485 | 2 |
RLM(D)-25-2.5 | 2.5 | 160 | 25 | 1.5m | kw/h | M-BUS | 2 |
RLM(D)-25-2.5 | 2.5 | 160 | 25 | 1.5m | Gcal | RS-485 | 2 |
Normal Flow(Qn) | 0.6m3/h | 1.5m3/h | 2.5m3/h |
Flow range(m3/h) | 0.012~1.2 | 0.03~3 | 0.05~5 |
Pressure loss(KPa/Qp) Reference diagram I | 24 | 24 | 24 |
Max. Pressure(MPa) | 1.6 | ||
Temperature range(℃) | 4~95 | ||
Normal flow(Qn) | m3/h | 0.6 | 1.5 | 2.5 | |||
Normal DN | mm | 15 | 15 | 20 | |||
Body thread | ---- | G3/4”B | G3/4”B | G1”B | |||
Connection thread | ---- | 1/2” | 1/2” | 3/4” | |||
Height | mm | 85 | 85 | 85 | 85 | 85 | 85 |
Length | mm | 110 | 110 | 110 | 110 | 130 | 130 |
Mounting for heat meters:
(For Meters used at water supply or return water for option):
Fully customizable design to meet project-specific technical and functional requirements
360° rotatable display and inclined LCD for optimized on-site reading in tight spaces
Dual heat and cold metering for year-round HVAC system operation
Environment Class A rating, suitable for diverse indoor installation environments
24KPa pressure loss at nominal flow to reduce system operating load
Support for water inlet end installation, with return water end configurations available on request
Our residential HVAC thermal meter is perfectly suited for enterprise clients and project contractors, including multi-family residential developers, commercial office building HVAC integrators, industrial park energy management departments, heating and cooling utility service providers, and energy conservation retrofit contractors.
As a leading China-based manufacturer of single-jet heat meters, we combine in-house R&D, large-scale production, and full technical support to serve commercial partners worldwide. Our 42,600㎡ modern manufacturing facility has an annual production capacity of over 1.5 million meters, with products exported to more than 20 countries and regions. We offer comprehensive OEM/ODM customization, from minor parameter adjustments to fully custom meter designs, with strict quality control ensuring consistent performance and reliable bulk supply.
Yes, we offer full OEM/ODM customization services, including communication protocol adjustments, display unit modifications, and installation configuration changes to match your project’s unique needs.
No, the YG-RLM(G) series supports both horizontal and vertical installation, providing maximum flexibility to fit diverse pipeline layouts and space constraints.
We offer two optional units: kWh and Gcal, to align with regional billing standards and user preferences.
This heat meter reliably detects a minimum temperature difference of 3℃, ensuring accurate measurement even under low-load operating conditions.
