Product Overview
BBUEM-F is a fixed ultrasonic instrument for monitoring heating and cooling energy in water systems. It combines transit-time ultrasonic flow measurement with paired temperature measurement and calculates accumulated heating or cooling energy from the flow rate and the supply-return temperature difference.
Clamp-on flow transducers are installed on the outside of the pipe, reducing pipe modification and process downtime. The meter is suitable for central HVAC systems, district heating and cooling, heat-exchange stations, boiler systems, energy management, and industrial circulating-water systems.
Key Features
- Measures flow, supply and return temperatures, and accumulated energy
- Clamp-on flow measurement without pipe cutting
- Two matched temperature inputs
- Analog, pulse, relay, and digital communication outputs
- Forward, reverse, and net flow totalization
- Standard and extended versions for different accuracy and pipe-size requirements
Typical Applications
- Chilled-water and cooling-water systems
- District heating and district cooling
- Heat-exchange stations and boiler systems
- Building energy management
- Industrial circulating-water and process-energy monitoring
Technical Specifications
| Parameter | Standard Version | Extended Version |
|---|---|---|
| Flow measurement principle | Ultrasonic transit time | Ultrasonic transit time |
| Medium | Liquid in a full pipe | Liquid in a full pipe |
| Velocity range | -12 to +12 m/s | -12 to +12 m/s |
| Velocity accuracy | ±1.0% of reading | ±0.5% of reading |
| Low-velocity accuracy | ±0.01 m/s | ±0.01 m/s |
| Energy-meter accuracy class | Class 2 | Class 2 |
| Pipe size | DN25 to DN2000 | DN25 to DN5000 |
| Display | 2.2 in TFT LCD, 320 × 240 | 2.8 in TFT LCD, 320 × 240 |
| Analog output | 4–20 mA, 750 Ω maximum load | 4–20 mA, 750 Ω maximum load |
| Pulse output | 0–9999 Hz, OCT | 0–9999 Hz, OCT |
| Relay output | SPST, 1 Hz maximum | SPST, 1 Hz maximum |
| Communication | RS485, Modbus protocol | RS485, Modbus protocol |
| Power supply | 24–36 VDC | 24–36 VDC |
| Transmitter temperature | -40 to +60 °C | -40 to +60 °C |
| Standard flow-transducer temperature | -40 to +80 °C | -40 to +80 °C |
| Temperature-sensor range | -10 to +105 °C | -10 to +105 °C |
| Humidity | Up to 95% RH, non-condensing | Up to 95% RH, non-condensing |
| Transmitter enclosure | Engineering plastic | CNC-machined aluminum alloy |
Sensor Configuration
| Item | Configuration |
|---|---|
| Flow transducers | Clamp-on; insertion type optional |
| Temperature sensors | Matched PT1000 temperature sensors |
| Temperature-sensor mounting | Clamp-on or insertion |
| Standard cable length | 10 m |
| Flow-transducer mounting | V, N, Z, or W method |
Measurement Functions
- Instantaneous flow and velocity
- Forward, reverse, and net flow totals
- Supply and return temperatures
- Temperature difference
- Instantaneous heating or cooling power
- Accumulated heating or cooling energy
Selection Information
Please provide the following information when ordering:
- Heating or cooling application
- Pipe outside diameter, material, and wall thickness
- Liner material and thickness
- Liquid type and operating-temperature range
- Flow range and expected temperature difference
- Temperature-sensor mounting method
- Required outputs, communication, and cable length