Digitermo DLL DN20 M-Bus Ultrasonic Heat Meter
The Digitermo DLL DN20 M-Bus ultrasonic heat meter is developed for central systems with wired remote reading, precise heat measurement, an ER26500 battery and 24 months of data memory.
| The Digitermo DLL DN20 ultrasonic heat meter is designed for precise measurement of heat energy consumed in central heating and cooling systems. With moving-part-free ultrasonic measurement technology, a brass measuring body and a multifunction LCD display, it is suitable for apartment, estate and commercial building applications. It runs on an ER26500 C size battery and stores up to 24 months of historical consumption data. It can be integrated into building automation and remote meter-reading infrastructures via wired M-Bus communication. For DN20, the nominal flow is given in the documentation as 2.5 m³/h, minimum flow as 0.025 m³/h and maximum flow as 5 m³/h. |
| Measurement and communication With wired M-Bus communication, meter data can be read remotely; energy, volume and flow values can be monitored on the LCD display. Display and user menus Energy consumption, total volume, instantaneous flow, temperature values, fault codes and meter information can be displayed on the LCD screen. The new DLL model's memory is stated to store 24 months of historical data. Applications Centrally heated and cooled residences, estates, mass housing, commercial buildings and remote meter-reading systems. |
| Nominal diameter | DN20 |
|---|---|
| Measurement technology | Ultrasonic, no moving parts |
| Nominal flow (qp) | 2,5 m³/h |
| Minimum flow (qi) | 0,025 m³/h |
| Maximum flow (qs) | 5 m³/h |
| Body connection | G1"" |
| Measuring body length | 130 mm |
| Temperature range | 1–105 °C |
| Measuring temperature difference (ΔΘ) | 3–75 K (dokümandaki genel çalışma bilgisi ile teyit edilmeli) |
| Measuring accuracy class | Class 2 (EN 1434) |
| Temperature sensor | PT1000 |
| Operating pressure | 1,6 MPa |
| Declared pressure loss | 10 kPa |
| Battery type | ER26500 / 26500 C boy lityum pil |
| Historical data memory | 24 ay |
| Body material | Pirinç |
| Mounting orientation | Yatay ve dikey |
| Display | Çok fonksiyonlu LCD |
| Application | Isıtma ve soğutma |
| Mechanical/EMC class | M1 / E1 |
| Protection class | IP65 IP 67 IP 68 |
| Communication | Wired M-Bus |
| Protocol | M-Bus" |
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