Product Overview
BBUFM-F is a fixed clamp-on ultrasonic liquid flow meter for continuous flow monitoring on full pipes. It uses the transit-time principle and measures flow externally, allowing installation without cutting the pipe or placing moving parts in the liquid.
Two performance configurations are available. The Standard configuration is intended for general industrial flow measurement, while the High-Accuracy configuration extends the pipe-size range and improves measurement accuracy for more demanding applications.
Key Features
- Non-invasive clamp-on ultrasonic flow measurement
- No pipe cutting, no moving parts, and no additional pressure loss
- Standard and High-Accuracy configurations
- Wide pipe-size coverage up to 5000 mm
- 4–20 mA analog, pulse/OCT, and relay outputs
- RS485 communication with Modbus protocol
- 24–36 VDC power supply
- Clamp-on transducers for clean-liquid applications
Typical Applications
- Industrial process-water systems
- Water supply and water treatment
- HVAC chilled-water and cooling-water loops
- Chemical and process-liquid transfer
- Utility and energy-management systems
- Large-pipe flow monitoring
Suitable Liquids
BBUFM-F is intended for liquids suitable for ultrasonic transit-time measurement, particularly clean or relatively clean liquids with a stable acoustic path and a full pipe.
Technical Specifications
| Parameter | Standard | High Accuracy |
|---|---|---|
| Measurement principle | Ultrasonic transit time | |
| Velocity range | 0 to ±12 m/s | 0 to ±12 m/s |
| Accuracy | ±1.0% of measured value | ±0.5% of measured value |
| Repeatability | 0.2% | 0.15% |
| Linearity | ±1.0% | ±0.5% |
| Pipe size | 25 to 2000 mm | 25 to 5000 mm |
| Analog output | 4–20 mA, maximum load 750 Ω | |
| Pulse output | 0–9999 Hz, OCT | |
| Relay output | SPST, max. 1 Hz | |
| Communication | RS485, Modbus protocol | |
| Power supply | 24–36 VDC | |
| Display | 2.2-inch TFT LCD, 320 × 240 | 2.8-inch TFT LCD, 320 × 240 |
| Transmitter temperature | -40 to 60 °C | |
| Standard transducer temperature | -40 to 80 °C | |
| Humidity | Up to 95% RH, non-condensing | |
| Transmitter enclosure | PC plastic enclosure | Die-cast aluminum |
Configuration Options
| Configuration | Recommended Use |
|---|---|
| Standard | General fixed flow measurement; ±1.0% accuracy; pipe sizes from 25 to 2000 mm |
| High Accuracy | Higher-accuracy and large-pipe applications; ±0.5% accuracy; pipe sizes from 25 to 5000 mm |
Compatible Pipe Materials
- Carbon steel
- Stainless steel
- Copper
- PVC and other suitable plastic pipes
- Other acoustically conductive pipe materials subject to application confirmation
Installation Methods
V, Z, N, and W ultrasonic paths can be used according to pipe diameter, pipe condition, and available straight-run length. The correct transducer spacing and installation method should be selected for the actual pipe.
Selection Information
- Pipe outside diameter and wall thickness
- Pipe material and lining, if any
- Liquid name and temperature
- Expected flow range
- Required accuracy level
- Available straight-pipe length
- Required output and communication interface