RBXGU Series Micro Flow Ultrasonic Sensor -inline

RBXGU Micro Flow Ultrasonic Sensor 1-100 mL/min - RB Flowmeter
  • RBXGU Micro Flow Ultrasonic Sensor 1-100 mL/min - RB Flowmeter
  • Precision Spraying Line equipped with RBXGU Micro Flow Sensor - RB Flowmeter
  • High Precision Ultrasonic Time-Difference Measurement by RB Flowmeter

RBXGU Series Ultrasonic Flow Sensors/ Flow Meters adopt U-shaped tubing. Through NPT threaded fittings, they can be connected to various types of tubing such as PVC, silicone, PE, PUR, etc. The RBXGU series ultrasonic flow sensors/flow meters are compact and can output results without external circuitry. Ultrasonic flow sensors/flow meters can be integrated into liquid flow paths to measure very low flow rates with high accuracy up to ±0.1mL/min.The RBXGU series of ultrasonic sensors are based on the ultrasonic time-difference method technology and can be configured as flow switches or for bubble detection, as well as for liquid filling processes.

 In industrial precision spraying and reagent dosing, capturing stable signals at flow rates between 1–100 mL/min has long been a technical challenge. The RBXGU Series by R&B Instrument Inc. is a breakthrough ultrasonic sensor designed specifically for these micro-flow scenarios. By optimizing acoustic structures and signal processing, the RBXGU transforms micro-flow measurement from "unmeasurable" to "controllable," delivering millisecond-level response and unmatched stability.
With its outstanding sensitivity and stability, RBXGU not only solves the problem of low-flow detection in the spraying process but also provides customers with a more accurate, stable and efficient production control experience, achieving dual improvements in quality and efficiency.

Key Features & Advantages：
• Ultra-High Resolution: Achieves a resolution of 0.05 mL/min, capturing even the most minute liquid flow characteristics.
• Millisecond Response Time: Specifically tuned for pulsed spraying and high-frequency start-stop cycles, providing real-time data without lag.
• Zero Mechanical Wear: As an ultrasonic device from R&B Instrument Inc., it features no moving parts, preventing the clogging and degradation issues common in gear or rotor meters.
• Superior Chemical Compatibility: The flow path is constructed from highly stable, biocompatible materials, making it ideal for adhesives, reagents, oils, and solvents.
• Stable Pulse Capture: Expertly handles the flow pulsations typical of micro-pump systems, ensuring a smooth and reliable output signal.
             

Description

  • Principle
  • Features
  • Specification
  • Model Selection
  • Applicants
  • Download
Principle
The RBXGU sensor utilizes advanced ultrasonic time-difference measurement technology.
By precisely measuring the difference in sound propagation time between downstream and upstream directions, RB Flowmeter's proprietary algorithms calculate flow velocity with extreme accuracy, even at the lowest velocities where traditional sensors fail.
 
Features
The RBXGU series of ultrasonic sensors Features:
·Highly accurate measurement of very low flow rates
·Accuracy can up to ±0.1mL/min
·Support bi-directional measurement and calculate fluid volume
·Equipped with bubble detection, quantitative filling, flow switch function
·Circuitry is integrated within the flow sensors/flow meters, no need for external calculation and processing systems
·No clogging, no steering, no dead space, low fluid pressure loss.
·Standard outputs available for seamless integration into customer systems.

Feature Specification
Manufacturer R&B Instrument Inc.
Measuring Range 1 – 100 mL/min
Resolution ±0.05 mL/min
Repeatability ±0.1% of Full Scale
Reading Accuracy ±1% (for flow rates > 5 mL/min)
Response Time Millisecond-level
Compatible Media Water, Alcohol, Adhesives, Reagents, Oils, Paints
Specification
The RBXGU series of ultrasonic sensors Measurable Liquids:
  • Water, buffer solutions, saline, ethylene glycol mixtures, and other acoustically transparent fluids
  • Wetted Materials：Fluid path: PEEK; Seals: Viton®
  • Housing Material：Aluminum alloy
  • Input Voltage：12-30 VDC
  • Current Consumption：<20 mA (no external load)
  • Liquid Temperature：0°C-90°C
  • Ambient Temperature：0°C-60°C
  • Storage Temperature：-20°C-70°C
  • Input/Output Options：
  1. RS485 output;
  2. Pulse output;
  3. Current/voltage output
  4. Digital output (configurable as: NPN, PNP, push-pull, or flow switch)
Model Selection
The RBXGU series of ultrasonic sensors Model Selection: 

Part                                              Max Flow                  Accuracy
RBXGU012NS                   0-1000 mL/min             0-10mL/min: ±0.1mL/min
                                                                                         10-1000mL/min: ±1%

RBXGU016NS                   0-2000 mL/min            0-20mL/min:±0.2mL/min
                                                                                        20-2000mL/min: ±1%

RBXGU024NS                  0-3000 mL/min            0-50mL/min:±0.5mL/min
                                                                                        50-3000mL/min:±1%
Applicants
The RBXGU series of ultrasonic sensors Industry Applications:
  • Medical device testing systems: such as testing of blood dialyzers, artificial hearts, organ transplantation systems, artificial heart-lung machines, blood pumps.
  • Biopharmaceutical processes & equipment: such as reaction vessels, fermenters, cell culture equipment, vaccine production, tangential flow filtration systems, liquid chromatographs.
  • Fluid monitoring in manufacturing processes: such as high purity water transfer lines.
  • Food & beverage processing: such as milk, juice, beer production processes.
  • General industry: such as filling equipment, spraying equipment, cooling systems, lubrication systems, oil tubing systems
  • Scientific laboratory systems
  • Water and wastewater treatment systems
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