Model: RBXEF-OP
Open-channel electromagnetic flow meter using area-velocity measurement for reliable flow and level data in sewage, stormwater and irrigation channels.
| Diameter | Pipe DN100 – DN6000; channel width up to 6 m |
| Accuracy | Velocity 1.0%; level 0.5%; system error 2.5% |
| Velocity | Down to 0.01 m/s |
| Temperature | Ambient -10°C ~ +60°C |
The RBXEF-OP measures open-channel and partially-filled pipe flow by combining electromagnetic velocity sensing with dual ultrasonic and hydrostatic level measurement. It is built for sewage, stormwater and irrigation channels where sediment, bubbles and debris defeat conventional instruments.
Ultra-low velocity sensitivity down to 0.01 m/s and IP68 submersible sensors make it suitable for flooded sewers and remote, unattended sites with solar or battery power.
Where this meter is typically deployed in service. Each scenario links to the full application note.
Precise flow measurement for water treatment plants, distribution networks, and wastewater management. Our electromagnetic and ultrasonic flow meters provide reliable data for billing, leak detection, and process optimization in municipal and industrial water systems.
View DetailsUltra-pure flow measurement for WFI systems, bioreactor feeding, and clean utility monitoring. High-accuracy Coriolis meters with full drainability support GMP compliance and batch traceability in API manufacturing and bioprocessing.
View DetailsHeavy-duty flow measurement for slurry, tailings, and process water. Abrasion-resistant liner options and rugged housing designs withstand harsh conditions in concentrators, leaching circuits, and pipeline transport applications.
View DetailsThe RBXEF-OP offers Velocity 1.0%, level 0.5%, system 2.5% accuracy, verified through our ISO 9001-managed factory calibration process.
The RBXEF-OP is available for pipe sizes from DN100 ~ DN6000 (channel width up to 6 m), supporting a wide range of industrial flows.
The RBXEF-OP supports RS485 Modbus, 4-20mA, alarm (GPRS/4G/5G optional) output for integration with your control system.
Battery-powered electromagnetic water meter for irrigation and remote water metering without external power, with IP68 protection and 3–6 year battery life.
Ultra-low-conductivity electromagnetic batching meter with stable zero and ±0.2% batching accuracy for pure and low-conductivity liquids down to 1 μS/cm.
Battery-powered electromagnetic flow converter with IP68 housing and 3–6 year lithium battery, compatible with major magmeter sensor brands for remote metering without mains power.
Last updated: October 18, 2026
Contact our sales team for pricing, technical consultation, or a customized solution for your application.
Request a Quote Now| Output signal | RS485/Modbus; optional GPRS/4G/5G, 4–20 mA, alarm |
| Power supply | AC 220V/110V, DC 12V, 3.6V battery, optional solar |
| Protection | IP68 (sensors); IP65 (transmitter) |
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.