Product Overview
BBUFM-S is a clamp-on ultrasonic liquid flow meter designed for small pipes and equipment integration. It uses the transit-time measurement principle and is installed outside the pipe with a size-matched bracket. No pipe cutting, drilling, or contact with the liquid is required.
Compact, remote, and remote high-temperature configurations are available. The meter is suitable for online flow monitoring of water, purified water, ultrapure water, and clean process liquids in cleaning equipment, beverage production, pharmaceutical systems, HVAC units, and industrial process equipment.
Key Features
- Non-invasive clamp-on measurement without pipe modification
- Size-matched mounting bracket for convenient positioning
- Compact, remote, and remote high-temperature configurations
- Compatible with metal and various plastic pipes
- OLED display for instantaneous and accumulated flow
- 4–20 mA, RS485/Modbus, and optional OCT alarm output
- No moving parts, no additional pressure loss, and minimal maintenance
Typical Applications
- Industrial and flat-glass cleaning equipment
- Beverage, food, and pharmaceutical production lines
- Purified-water and ultrapure-water systems
- HVAC units and equipment cooling water
- Chemical and process-liquid transfer
- Small-pipe flow monitoring
Suitable Liquids
The meter is intended for clean liquids with stable acoustic properties and minimal bubbles or cavitation, including:
- Tap water, purified water, and ultrapure water
- Beverages and alcohol-based liquids
- Acid, alkali, and salt solutions
- Cleaning fluids and selected chemical solvents
- Other process liquids suitable for ultrasonic transmission
Technical Specifications
| Parameter | Value |
|---|---|
| Measurement principle | Ultrasonic transit time |
| Velocity range | 0.1 to 5.0 m/s |
| Accuracy | ±2.0% |
| Repeatability | 0.8% |
| Pipe outside-diameter range | Approximately 9.53 to 220 mm |
| Analog output | 4–20 mA, 600 Ω maximum load |
| Alarm output | Optional OCT upper- and lower-limit alarm |
| Communication | RS485, Modbus protocol |
| Power supply | 24 VDC |
| Standard cable length | 2.0 m |
| Display | 128 × 64 OLED |
| Totalizer | Six digits |
| Data storage | Daily, monthly, annual, and accumulated flow records |
| Ambient temperature | 0 to 50 °C |
| Humidity | 0–95% RH, non-condensing |
| Protection rating | IP54 |
| Enclosure material | Aluminum alloy |
Configuration Options
| Configuration | Application and Features |
|---|---|
| Compact | Transmitter and transducer installed as one assembly; for pipe ODs of approximately 9.53 to 110 mm |
| Remote | Display transmitter and transducer installed separately; covers pipe ODs of approximately 9.53 to 220 mm |
| Remote high-temperature | Separate transmitter and transducer; medium-temperature range extended to 0 to 110 °C |
Temperature Ranges
| Configuration | Medium Temperature |
|---|---|
| Compact | 0 to 50 °C |
| Standard remote | 0 to 80 °C |
| Remote high-temperature | 0 to 110 °C |
Pipe Configurations
The mounting bracket is selected according to the actual pipe outside diameter.
| Nominal OD | Corresponding Nominal Pipe Size |
|---|---|
| 9.53 mm | DN6 |
| 12.7 mm | DN8 |
| 15 mm | DN10 |
| 20 mm | DN15 |
| 25 mm | DN20 |
| 32 mm | DN25 |
| 40 mm | DN32 |
| 50 mm | DN40 |
| 63 mm | DN50 |
| 75 mm | DN65 |
| 90 mm | DN80 |
| 110 mm | DN100 |
| 140 mm | DN125 |
| 160 mm | DN150 |
| 220 mm | DN200 |
Reference Flow Ranges
| Nominal OD | Minimum Flow | Maximum Flow |
|---|---|---|
| 9.53 mm | 0.02 m³/h | 0.66 m³/h |
| 12.7 mm | 0.04 m³/h | 1.18 m³/h |
| 15 mm | 0.06 m³/h | 1.84 m³/h |
| 20 mm | 0.06 m³/h | 3.18 m³/h |
| 25 mm | 0.11 m³/h | 5.65 m³/h |
| 32 mm | 0.18 m³/h | 8.83 m³/h |
| 40 mm | 0.29 m³/h | 14.47 m³/h |
| 50 mm | 0.45 m³/h | 22.61 m³/h |
| 63 mm | 0.71 m³/h | 35.33 m³/h |
| 75 mm | 1.19 m³/h | 59.70 m³/h |
| 90 mm | 1.81 m³/h | 90.43 m³/h |
| 110 mm | 2.83 m³/h | 141.30 m³/h |
| 140 mm | 4.42 m³/h | 220.78 m³/h |
| 160 mm | 6.36 m³/h | 317.93 m³/h |
| 220 mm | 11.30 m³/h | 565.20 m³/h |
Compatible Pipe Materials
- Stainless steel
- Carbon steel
- Copper
- PVC / CPVC
- PVDF
- PPR / PPH
- PFA / PU
- HDPE
For other pipe materials, selection should be confirmed according to the material’s acoustic properties.
Measurements and Display
- Instantaneous flow
- Net accumulated flow
- Daily, monthly, and annual accumulated records
- Metric and imperial units
- Upper- and lower-limit alarms
Selection Information
- Actual pipe outside diameter, inside diameter, and wall thickness
- Pipe material
- Liquid name
- Medium temperature
- Expected flow range
- Compact, remote, or remote high-temperature configuration
- Required output and communication interface