Digitermo DTU DN20 M-Bus Ultrasonic Heat Meter
The Digitermo DN20 M-Bus ultrasonic heat meter is a locally manufactured device providing reliable energy measurement in medium-diameter heating and cooling systems. Thanks to ultrasonic measurement technology it offers accurate, long-lasting and maintenance-free operation.
Digitermo DN 20 M-Bus Ultrasonic Heat Meter is a locally manufactured device providing reliable energy measurement in medium-diameter heating and cooling systems. Thanks to ultrasonic measurement technology, it offers precise, long-lasting, maintenance-free use.
The DN 20 model provides fair billing and energy savings in central heating-cooling applications thanks to its ability to measure accurately at both low and medium flow rates. Its moving-part-free construction and IP65, IP67, IP68 protection classes deliver stable performance for many years. The touch-key feature provides a user-friendly experience.
The DN 20 ultrasonic heat meter provides easy integration into building automation systems via the M-Bus communication protocol. This allows consumption data to be read remotely, monitored and reported.
Track your energy consumption reliably and increase your savings.
Digitermo Ultrasonic Heat Meters provide precise energy measurement in heating and cooling systems, in a range of diameter options. With local manufacturing, long-lasting battery technology, IP65/67/68 protection classes and touch-key features, they offer reliable solutions for modern buildings and commercial facilities.
Ideal for small-diameter apartment and residential projects. Provides fair billing and energy savings in individual heating-cooling applications.
Offers precise measurement in medium-diameter estates and commercial projects. Provides reliable data in floor-based or central systems.
Suitable for use in medium-sized apartment blocks and office buildings. Easily integrates with energy management systems.
Provides precise measurement in high-flow central systems and large buildings. Durable under demanding field conditions.
Measures with high accuracy in high-volume systems, hotels and industrial projects. Offers a professional solution for modern facilities.
📊 Precise Measurement | Energy Efficiency | Long-Lasting Use
Track your energy consumption reliably and save.
| Model | DTU DN20 |
|---|---|
| Nominal diameter | DN20 |
| Communication | Wired M-Bus |
| Body length | 130 mm |
| Connection size | G1"" |
| Minimum flow (qi) | 0,025 m³/h |
| Nominal flow (qp) | 2,5 m³/h |
| Maximum flow (qs) | 5 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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