Model: RBFM-EX3
Compact non-invasive clamp-on transit-time ultrasonic meter for DN10–DN100 small pipes, measuring flow and heat with quick clip-on installation.
| Diameter | DN10 – DN100 |
| Accuracy | ±1.0% standard |
| Temperature | Fluid 0–50°C or 0–150°C (remote type) |
| Output signal | RS485 Modbus, 4–20 mA, pulse/OCT; optional alarm and LoRaWAN |
The RBFM-EX3 is a compact clamp-on transit-time ultrasonic meter for small pipes from DN10 to DN100. Fixed sensor spacing makes installation plug-and-play: clip the transducers on copper, plastic, steel, iron or stainless steel pipe and the meter is ready — no cutting, no downtime, no pressure loss.
Flow rate and thermal energy are measured simultaneously, making the EX3 equally suitable for process monitoring and HVAC sub-metering in tight installation spaces.
The RBFM-EX3 offers ±1.0% accuracy, verified through our ISO 9001-managed factory calibration process.
The RBFM-EX3 is available for pipe sizes from DN10 ~ DN100, supporting a wide range of industrial flows.
The RBFM-EX3 supports RS485 Modbus, 4-20mA, pulse/OCT (LoRaWAN optional) output for integration with your control system.
Selection depends on fluid conductivity, pipe size, temperature, and accuracy needs. Electromagnetic meters suit conductive liquids, ultrasonic meters suit large pipes and clean liquids, and vortex meters handle steam, gas, and liquids. Contact R&B Instrument Inc. engineers for a recommendation.
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Last updated: October 18, 2026
Contact our sales team for pricing, technical consultation, or a customized solution for your application.
Request a Quote Now| Power supply | 24 VDC (10–36 VDC) |
| Protection | IP67 |
| Installation | Clamp-on, fixed sensor spacing, 2 m cable |