Model: RBDOF-F
Fixed Doppler ultrasonic flow meter for open-channel and partially-filled pipe flow with dual-depth area-velocity technology.
| Type | Fixed Doppler area-velocity, open channel / partially filled pipe |
| Accuracy | Velocity ±1%~±3%; water depth ±3 cm |
| Level range | Pressure type 0.02–3 m or 0.02–10 m |
| Temperature |
The RBDOF-F is a fixed-installation Doppler flow meter for open channels and partially-filled pipes carrying dirty liquids, slurries and stormwater. Dual-depth technology combines pressure and backup ultrasonic level measurement, and self-transmitting/receiving mode keeps working at very low water levels.
Automatic flow calculation supports circular, rectangular, trapezoidal and U-shaped channels, with RS485/Modbus and 4–20 mA outputs for remote monitoring.
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 DetailsHygienic flow measurement for CIP/SIP processes, ingredient dosing, and filling lines. Sanitary-grade flow meters with EHEDG-compliant designs meet FDA and 3-A standards for dairy, brewery, beverage, and processed food production.
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 RBDOF-F offers Velocity ±1%~±3%, level ±3 cm accuracy, verified through our ISO 9001-managed factory calibration process.
The RBDOF-F is available for pipe sizes from Open channel / partially filled pipe, supporting a wide range of industrial flows.
The RBDOF-F supports RS485 Modbus RTU, 4-20mA, RS232 (model dependent) output for integration with your control system.
Battery-powered insertion ultrasonic water meter for agricultural irrigation and water supervision, with IP68 protection and no pressure loss.
Inline flanged transit-time ultrasonic flow meter for industrial water and process liquids, factory calibrated with no moving parts and zero pressure drop.
Inline ultrasonic micro-flow sensor measuring 1–100 mL/min with millisecond response, no moving parts and a biocompatible PEEK fluid path.
Last updated: October 18, 2026
Contact our sales team for pricing, technical consultation, or a customized solution for your application.
Request a Quote Now| Operation -5°C ~ +60°C; storage -25°C ~ +80°C |
| Output signal | RS485 (Modbus RTU), 4–20 mA, RS232 (model dependent) |
| Power supply | 10–30 VDC (12 VDC / 24 VDC options) |
| Protection | IP68 (sensor); 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.