Precision Flow & Energy Measurement for Small Pipes: RBFM-K Clamp-on Ultrasonic Flow Meter & FAQ

 Measuring fluid flow and thermal energy in small pipelines (DN15 to DN65) has historically presented engineers with a clear trade-off: cut pipes and risk leaks/pressure drops with inline meters, or deal with complicated installations


RBFM-K Clamp-on
Ultrasonic Flow Meter
The RBFM-K Compact Clamp-on Ultrasonic Flow / Heat Meter eliminates this compromise

Engineered specifically for small pipe sizes, it delivers precise, non-intrusive flow measurement and optional BTU energy monitoring in a compact, easy-to-install package

What is the RBFM-K Ultrasonic Flow Meter? (Quick Overview)

The RBFM-K is an advanced external clamp-on ultrasonic flow meter. By clamping directly onto the outer wall of the pipe, it measures liquid velocity and flow rate without ever touching the process fluid

Pipe Sizes Supported: DN15, DN20, DN25, DN32, DN40, DN50, DN65 (Min. Inner Diameter 

≥12mm)

Accuracy: ±2% of reading (±1% after field calibration)

Fluid Compatibility: Water, light oils, and pure chemicals (free of solid particles)

Pipe Materials: Metal pipes (Stainless Steel, Carbon Steel, Copper) and Rigid Plastics (PVC, PP, PVDF)

Enclosure Rating: IP65 protection, built with durable Aluminum and Industrial Plastics


Key Features & Benefits of RBFM-K

1. Non-Intrusive Clamp-On Design

Zero Pressure Drop: Because the sensors do not protrude into the pipe, there is no restriction of flow or pressure loss No Media Contamination: Ideal for ultra-pure liquids, deionized water, and corrosive chemicals Zero Downtime Installation: Clamps directly onto existing pipework in minutes—no need to cut pipes, shut down processes, or drain system fluid

2. Versatile & Universal Application

Whether managing HVAC chilled water, industrial process fluids, or chemical dosing, one RBFM-K unit provides universal flexibility across various pipe materials and fluid types Temperature Range: Standard transducer handles 0∘C to 65∘C (T1), while high-temp options handle up to 11∘C (T2)

Flow Ranges: Covers small flow requirements from 0. L on DN15 up to 10 L/ on DN65

3. Seamless Integration with Remote Monitoring (PLC/SCADA)

Equipped with a 256×128 clear LCD display for local monitoring, the RBFM-K also connects effortlessly to building automation systems or central control rooms

Outputs & Communication: Standard Modbus RS485 and 4-20mA analog output

Optional Outputs: Frequency (OCT) output and Relay alarm options

Data Reliability: EEPROM memory backup ensures data retention for over 10 years without power loss

4. Integrated BTU / Thermal Energy Metering

By pairing the unit with optional PT1000 temperature sensors (installed at the water inlet and outlet), the RBFM-K transforms into an Ultrasonic Cooling/Heat/BTU Meter. This allows accurate energy monitoring for HVAC systems, central heating, and facility management


Frequently Asked Questions (FAQ)

Q1: How difficult is the installation process?

A: Installation takes only a few minutes

 The clamp-on mechanism secures the main unit to the exterior of the pipe using standard tools, completely avoiding pipe cutting or welding

Q2: What is the flow range for RBFM-K across different pipe sizes?

A: Max flow capacities vary by nominal diameter

DN15: Up to 60 L/ (0. L min)

DN25: Up to 20 L/ (0. L min)

DN50: Up to 60 L/ (0. L min)

DN65: Up to 10 L/ (0. L min)


Conclusion

The RBFM-K Compact Clamp-on Ultrasonic Flow / Heat Meter combines quick installation, zero pressure loss, and versatile communication protocols to deliver an all-in-one flow measurement solution for small pipes


🌐 For complete specifications and order selection, visit: www.rbflowmeters.com


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