Handheld Ultrasonic Flow Meter
- Features
- Specification
- Model Selection
- Applications
- Download
- Transducers for pipe sizes ranging from ½" ~ 240" (15 to 6000 mm)
- Wide range of fluid velocities - 0.03 ~ ±105 feet/sec. (0.01 ~ ± 32 m/s)
- Fast response time - less than 1 second
- High accuracy - ±1% of reading
- 2 line LCD display with flow rate, totalizer & diagnostics
- Small sized (8.25" x 3.50" x 1.48") and lightweight (≈1 lb.)
- Long-life Ni-MH battery for up to 15 hours of continuous operation
- Clamp-on transducers feature integral magnet for installation on metal pipe without use of a mounting belt or with frame for optional
- Data logger function includes date, totalizer, & signal condition diagnostic
- What's Transit-time ultrasonic flow meter principle?
Using the two transit times:

2. How to correctly select Ultrasonic flow meter?
- What is the size of the pipe?
- What is the fluid?
- Is the pipe always full?
- Does the liquid have particulates of 100 ppm of 100 microns in size?
- Do you require a handheld or continuous process monitor?
- What is the minimum,normal and maximum flow rate for the flow meter?
- What is the minimum and maximum process temperature?
- What is the minimum and maximum process pressure?
- Do you require an analog output?
The RBFM-F-H Handheld/Portable Clamp-on Type Ultrasonic Flow Meter Specification:
Transmitter |
Power Supply |
3 AAA Ni-H built-in batteries. When fully recharged it will last over 12 hours of operation. 90-240VAC for the charger |
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Velocity |
0 ~ ±40 ft/s (0 ~±12m/s), bi-directional |
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Display |
2 line×10 English letters LCD back lit, can display total flow, flow rate, velocity and meter running status etc. |
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Units Rate Totalized |
User Configured (English and Metric); Rate and Velocity Display; (FWD, NET, REV or BATCH) gallons, ft³, barrels, lbs, liters, m³,kg |
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Output |
4-20mA; Pulse, Relay, RS485, options: up to 64 GB Data logger |
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Input |
3* 4-20mA 2*Pt100 3 wires can measure Heat |
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Accuracy |
±1.0%~2.0% of reading at rates >0.5 m/s |
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±2.0% of reading at rates <0.5 m/s |
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Sensitivity |
Flow Rate: 0.001ft/s (0.0003m/s) |
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Repeatability |
0.2% of reading |
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Security |
Keypad lockout, access code enable |
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Dimensions and Weight |
100×204×34 Weight: <0.6kg |
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Transducer |
Liquid Types Supported |
Virtually most any liquid containing less than 2% total suspended solids (TSS) or aeration |
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Suited Liquid Temperature |
Std. Temp. Transducer: -40℃~160℃
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Dimensions and Weight |
S: Size:42×25×25; weight:<0.3kg M: Size:60×43×43; weight:<0.6kg L: Size:80×53×53; weight:<1.0kg |
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Pipe Size |
Transducer without Frame |
S transducer: DN15-100 Std M transducer: DN50-700 L transducer: DN300-6000 |
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Transducer with Frame |
S transducer: DN15-100 Std M transducer: DN50-300 |
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Data Logger |
Optional |
The RBFM-F-H Ultrasonic Flow/Heat Meter Model Selection
RBFM |
X |
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X |
DNxx |
X |
X |
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X |
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X |
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Instrument Type |
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F |
Ultrasonic Flowmeter |
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H |
Ultrasonic Heat meter |
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Power supply |
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A |
220VAC |
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D |
24VDC |
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B |
Battery |
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Flow/Heat meter Type |
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F |
Fixed type |
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H |
Handheld type |
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F |
Flanged type |
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B |
Battery type |
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Transducer Type |
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SN |
S type(pipe size: 15-100mm, temp.: -30 to 90℃) |
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SH |
S type(pipe size: 15-100mm, temp.: -40 to 160℃) |
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SPMN |
S type with mounting frame only for Handheld (pipe size: 15-100mm, temp.: -40 to 90℃) |
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SPMH |
S type with mounting frame only for Handheld(pipe size: 15-100mm, temp.: -40 to 160℃) |
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MN |
M Type(pipe size: 50-700mm, temp.: -30 to 90℃)) |
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MH |
M Type(pipe size: 50-700mm, temp.: -40 to 160℃)) |
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MPMN |
M type with mounting frame only for Handheld (pipe size: 50-300mm, temp.: -40 to 90℃) |
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MPMH |
M type with mounting frame only for Handheld (pipe size: 50-300mm, temp.: -40 to 160℃) |
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RB-1 |
extended the mounting frame, for pipe:DN300-700mm, temp.: -40 to 90℃ |
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RBH |
extended the mounting frame, for pipe:DN300-700mm, temp.: -40 to 90℃ |
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LN |
L type(pipe size: 300-6000mm, temp.: -30 to 90℃) |
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LH |
L type(pipe size: 300-6000mm, temp.: -40 to 160℃) |
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I |
Insertion Type |
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IE |
Extended type |
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F |
Flanged type |
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Pt100 |
Temperature sensor |
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DNxx |
Pipe size |
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Pipe material |
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C |
Carbon Steel |
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SS |
Stainless Steel |
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CI |
cast iron |
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F |
Fibreglass |
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P |
PVC |
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C |
cement pipe |
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X |
Others, clarify |
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X |
Pressure(MPa) |
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Output |
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N |
NO |
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A |
4-20mA |
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P |
Pulse |
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R |
Relay |
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2 |
RS232 |
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4 |
RS485 |
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5 |
Datalogger |
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Input |
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N |
NO |
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1 |
1*4-20mA |
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2 |
2*4-20mA |
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3 |
3*4-20mA |
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Cable length |
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X |
meter |
- Building Services/Energy Management: HVAC, energy measurement system
- Chemicals, including alcohol, acids, etc
- Beverage, food and pharmaceutical processors
- Petroleum products
- Agriculture irrigation metering
- Utilities monitoring: Water (hot water, cooling water, De-ionized water, potable water)
- Power+Energy: water flow, cooling water, etc.
2. Handheld/Portable Ultrasonic Flow Meter Manual