In the modern field of building heating and domestic hot water metering, precise, reliable, and intelligent flow meters are the core equipment for achieving energy management and fair billing. For small-diameter pipe applications (DN15-DN40), the ultrasonic remote flow meter, with its outstanding technical performance, has become an ideal choice for high-standard thermal metering solutions.
Product Overview
This series of ultrasonic remote flow meters is specifically designed for small-diameter hot water systems, with a range of diameters from DN15 to DN400. It strictly follows the national standard GB/T32224-2020, ensuring the authority and accuracy of the measurement. Its core utilizes the ultrasonic time difference principle to measure flow, without mechanical moving parts, fundamentally avoiding wear and achieving long-term stable high-precision measurement.
Core Technical Parameters and Advantages
1. Outstanding Measurement Performance
Wide Range High Precision: Measurement accuracy reaches the 2-level standard, with the minimum paired temperature error being only ±0.1℃. The temperature measurement range can reach up to 130℃ (DN50 and above), meeting the requirements of various hot water system conditions.
Sensitivity Start and Stop: The temperature start-up temperature difference is as low as 0.2K, enabling precise measurement of small heat exchanges and effectively eliminating measurement blind zones.
Low Flow Resistance Design: Under common flow rates, the pressure loss level is low (DN50 and below: △P40), significantly reducing the impact on the system circulation power and saving pump energy consumption.
2. Robust and Durable Structural Design
High-Quality Materials: For DN50 and below measurement tubes, copper material is standard, and 304 or 316 stainless steel can be customized according to special requirements such as corrosive water quality to ensure long-term corrosion resistance and service life.
High Protection Level: The sensor part has a protection level of IP68, capable of working in water immersion for a long time, fully adapting to complex installation environments such as damp wells and pipe wells.
Wide Temperature Operating Range: The working temperature range covers A/B/C/D classes, and the storage temperature range is -22℃ to 55℃, suitable for most regions in China with severe cold and hot climates.
3. Powerful Intelligent Communication and Data Management
Multiple Communication Interfaces:
Wired Method: Standard optical interface and RS485/M-BUS are provided, supporting multiple baud rates, compatible with GB/T 26831, CJ/T 188 and Modbus RTU, automatic identification, convenient for connection to various concentrator systems.
Wireless Internet: Optional NB-IoT narrowband Internet of Things and 4G network communication can be selected to achieve remote wireless data transmission, easily building a smart heating management platform.
Massive data storage: Utilizing advanced ferroelectric memory, it stores heat, cumulative flow, and corresponding time on a monthly basis, automatically recording historical data for the last 32 months and 31 days, providing a solid data foundation for energy consumption analysis.
Local clear display: The dual-line LCD screen displays 9-digit cumulative heat, 6-digit instantaneous flow, supply and return water temperatures, temperature difference, and cumulative running time in real time. The display resolution is fine (temperature 0.01℃, heat 0.1 kWh).
4. Ultra-low power consumption and long-lasting power supply
Under standard conditions, the overall power consumption is less than 30 μA, achieving extreme energy conservation.
The default configuration is a 3.6V long-lasting lithium battery, with a theoretical continuous working time of up to 6 years or more under certain conditions, significantly reducing maintenance frequency and costs.
At the same time, it provides an external DC 8-24V supply or uses AC 220V through an adapter for power supply options to meet different site conditions.
Typical application scenarios
1.Household communities, apartment buildings, for individual heat metering.
2.Energy monitoring and management for public buildings such as hotels, schools and hospitals.
3.Process hot water metering and energy efficiency analysis in factories and parks.
4.As a secondary meter for heat exchange stations or distributed energy systems.
Installation and Selection Tips
The standard installation position is at the supply end of the system. If you need to install at the return end, please specify this clearly during the order placement.
The length of the temperature sensor signal line can be customized according to your needs (1.3 meters for DN50 and below standard).
When selecting, you need to clearly define the technical specifications based on the pipe size, medium temperature, pressure, and the required communication method.
Conclusion
The DN15-DN40 small-diameter ultrasonic remote transmission heat meter integrates high-precision measurement, excellent durability, intelligent networking and ultra-low power consumption. It is not only a reliable tool for fair trade settlement, but also a key data node that promotes building energy conservation and reduction, and builds a smart city heating IoT. Its wide application will help heating enterprises improve management efficiency, assist users in developing energy-saving habits, and jointly promote green and sustainable development.