RBFM Fixed Insertion type Transit Time Ultrasonic Flow meter provides abundant capabilities for accurate liquid flow measurement from outside of a pipe. It utilizes state-of-the-art technologies on ultrasonic transmission /receiving, digital signal processing and transit-time measurement.
The proprietary signal quality tracking and self-adapting technologies allow system to optimally adapt to different pipe materials automatically.
Due to hot-tapped mounting of insertion transducers, there is no ultrasonic compound and coupling problem; Even though the transducers are inserted into pipe wall, they do not intrude into the flow, thus, do not generate disturbance or pressure drop to the flow.
The insertion (wetted) type has the advantage of long-term stability and better accuracy.
RBFM Fixed Insertion type Transit Time Ultrasonic Flow meter Features:
RBFM Fixed Insertion(Hot-tapped) type Transit Time Ultrasonic Flow meter Specifications
Transmitter |
Power Supply |
Standard: 115/230VAC 50/60Hz ±15%, 5VA max. Optional: 10 - 28 VDC, 2.5VA max. Solar supply 12VDC |
Velocity |
0~ ±40 ft/s (0 ~ ±12m/s), bi-directional |
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Display |
4 line×16 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, OCT Pulse, Relay, RS232C or RS485, Optional: up to 8 GB Data logger, Hart +(4~20mA), Modbus |
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Accuracy |
±1.0% 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 |
Std.:241×193×76.5 Weight: <2.5kg |
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Exp: 255×220×110 Weight: <5.0kg |
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Transducer |
Liquid Types Supported |
Virtually most any liquid containing less than 2% total suspended solids (TSS) or aeration |
Pipe Range |
DN65-4500 |
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Suited Liquid Temperature |
Std. Temp. Transducer: -40℃~121℃ High Temp. Transducer: -40℃~150℃ |
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Cable Length |
Shielded transducer cable. Standard length 20fts (6m). Can be extended to 990fts (300m). Contact the manufacturer for longer cable requirement. Cable should not be laid in parallel with high-voltage power line; neither should it be close to strong interference source such as power transformers. |
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Dimensions |
Std.: φ20mm, 190mm; weight:<0.6kg Extended: φ20mm, 325mm; weight:<1.6kg |
RBFM Fixed Insertion(Hot-tapped) type Transit Time Ultrasonic Flow meter Model Selection
RBFM Fixed Insertion(Hot-tapped) type Transit Time Ultrasonic Flow meter Applications:
Water, including hot water, chilled water, city water, sea water etc.
Secondary sewage, waste treatment, etc.
Oil, including lubricating oil, diesel oil, fuel oil, etc.
Beverage, food and pharmaceutical processor
HVAC, energy measurement system, etc.
Water & Wastewater industry
Pulp Paper & Power Generation industry
Irrigation System
Leakage Detection
HVAC Building Automation System
Smart Metering
Chemical Industry & Refinery Petrochemical industry
Liquid Flow meter Filling Machine