Digitermo DTU DN25 Wireless M-Bus Ultrasonic Heat Meter
The Digitermo DN25 ultrasonic heat meter is designed to measure heat consumption precisely in medium-scale buildings. With ultrasonic measurement technology it provides reliable measurement for many years without maintenance.
Digitermo DN 25 Ultrasonic Heat Meter is designed to accurately measure heat consumption in medium-scale buildings. With ultrasonic measurement technology, it provides reliable, maintenance-free measurement for many years.
The DN 25 diameter model is suitable for larger systems such as apartment blocks and business centers. It increases efficiency by clearly tracking energy consumption.
✅ Wireless M-Bus feature
✅ OMS open-protocol compatibility
✅ Use in hybrid systems (heating/cooling)
✅ Easy readability with backlit display
| Measurement technology: Ultrasonic energy measurement with no moving parts. Dual application: Monitoring of heating and cooling energy. Communication: Wired M-Bus + Wireless M-Bus (OMS). Display: Backlit LCD; indicators for energy, flow, temperature, time/date, battery status, fault and flow direction. Remote monitoring: Hourly and daily reading; access to historical consumption records. Optical port: Service and device interface. Battery: 26500 C size; up to 10 years battery life as stated in the technical brochure. Design: Brass body, horizontal/vertical installation. Measurement standard: EN 1434 Class 2; MID product declaration. Applications: Centrally heated/cooled residences, estates, commercial buildings and remote-reading infrastructures. |
| Model | DTU DN25 |
|---|---|
| Nominal diameter | DN25 |
| Communication | Kablolu M-Bus + Wireless M-Bus (OMS) |
| Body length | 160 mm |
| Connection size | G1 1/4"" |
| Minimum flow (qi) | 0,035 m³/h |
| Nominal flow (qp) | 3,5 m³/h |
| Maximum flow (qs) | 7 m³/h |
| Temperature measuring range | 1–105 °C (document) |
| Minimum temperature difference | 3,75 K (document) |
| Lower temperature-difference limit | 5,90 °C (document; confirmed) |
| Temperature sensor | PT1000 |
| Measuring class | EN 1434 Class 2 |
| Operating pressure | 1,6 MPa |
| Pressure loss | 10 kPa (common table) |
| Protection class | IP65 |
| Mechanical / electromagnetic class | M1 / E1 |
| Mounting type | Horizontal / vertical |
| Battery | 26500 C boy |
| Battery life | up to 10 years (product declaration) |
| Historical data | in the catalog LCD menu 12-month log |
| Optical interface | Yes |
| LCD display | Backlit, multifunction" |
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