Digitermo DLL DN20 Wireless M-Bus Ultrasonic Heat Meter
The Digitermo DLL DN20 Wireless M-Bus ultrasonic heat meter offers OMS-protocol radio-signal remote reading, 24 months of data memory and an ER26500 battery.
| 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 supports wired M-Bus together with Wireless M-Bus (OMS) communication, providing flexibility in remote-reading infrastructures. 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 Wireless M-Bus communication compatible with the open OMS protocol was developed for remote radio-signal data collection systems. 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 IP67 IP 68 |
| Communication | M-Bus + Wireless M-Bus (OMS) |
| Protocol | OMS (Wireless M-Bus modeli)" |
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