Product Overview
The BBUEM-P measures heating and cooling energy in DN15 to DN40 water systems. Ultrasonic flow measurement is combined with matched PT1000 platinum resistance sensors on the supply and return pipes to calculate accumulated heating or cooling energy.
The meter uses inline installation with a copper or stainless-steel body. Infrared, RS485, M-Bus, and optional remote communication interfaces are available, together with prepaid operation and an optional heat-control valve.
Key Features
- Separate heating and cooling energy measurement
- DN15 to DN40 inline installation
- Matched PT1000 temperature sensors
- R50 measuring range
- No mechanical rotating components
- Copper or stainless-steel body
- Storage for 18 months of historical data
- Infrared, RS485, and M-Bus communications
- Optional prepaid operation and heat-control valve
- Horizontal or vertical installation
Flow Specifications
| Nominal size | Maximum flow Qs | Permanent flow Qp | Minimum flow Qi |
|---|---|---|---|
| DN15 | 3 m³/h | 1.5 m³/h | 0.03 m³/h |
| DN20 | 5 m³/h | 2.5 m³/h | 0.05 m³/h |
| DN25 | 7 m³/h | 3.5 m³/h | 0.07 m³/h |
| DN32 | 12 m³/h | 6 m³/h | 0.12 m³/h |
| DN40 | 20 m³/h | 10 m³/h | 0.2 m³/h |
Technical Specifications
| Parameter | Specification |
|---|---|
| Measured medium | Water or homogeneous liquid |
| Nominal sizes | DN15, DN20, DN25, DN32, DN40 |
| Flow-measurement accuracy | 2% |
| Energy-meter accuracy class | Class 2 or Class 3 |
| Measuring range Qp/Qi | 50 |
| Nominal pressure | 1.6 MPa |
| Pressure loss | <0.015 MPa |
| Temperature sensors | Matched PT1000 platinum resistance sensors |
| Temperature-sensor matching | 0.06 °C |
| Heating temperature-difference range | 3 to 75 K |
| Cooling temperature-difference range | 2 to 75 K |
| Temperature resolution | 0.01 °C |
| Body material | Copper or stainless steel |
| Protection rating | IP65 |
| Battery | 3.6 V lithium battery |
| Battery life | More than 6 years |
| Data storage | 18 months |
| Standard communication | Infrared, RS485, M-Bus |
| Optional communication | 4-20 mA, RF, GPRS |
| Communication protocols | Modbus, CJ/T 188, or custom protocol |
| Installation | Supply or return pipe; horizontal or vertical |
| Optional configurations | Prepaid operation, remote monitoring, heat-control valve |
Typical Applications
- Residential and apartment heating measurement
- Energy billing in small commercial buildings
- Fan-coil units and branch-line energy measurement
- Sub-metering in heating and cooling systems
- Prepaid and remote-meter-reading projects