ETKD-N
The ZENNER ETKD-N is a single-jet water meter designed for cold water measurement in residential and commercial buildings. Its integrated M-Bus module connects it to central reading systems without an extra adapter. With Argus EMS it supports live consumption monitoring, alarms and automatic billing over an M-Bus TCP gateway.
| Diameter (DN) | DN15, DN20 |
| Q3 Nominal Flow | 2,5 m³/h (DN15) · 4,0 m³/h (DN20) |
| Q1 Min. Flow | 0,050 m³/h (DN15) |
| Q4 Max. Flow | 3,125 m³/h (DN15) |
| Accuracy Class | Class C (EN 14154) / MID MI-001 |
| Ambient Temperature | Max. 30 °C (cold water) |
| Pressure Loss | ≤ 0,063 MPa @ Q3 |
| Max. Operating Pressure | PN 16 |
| Protocol | M-Bus EN 13757-2 / EN 13757-3 |
| Connection | Via an M-Bus TCP gateway (Argus EMS compatible) |
| Battery | ≥ 12 years (standard operation) |
| Storage unit | m³ (total + historical index) |
| Protection Class | IP54 |
| Mounting | Horizontal or vertical |
| Standards | EN 14154, MID 2014/32/EU Annex MI-001, OIML R49 |
Integration with Argus EMS
The ETKD-N connects to Argus EMS over M-Bus (EN 13757) two-wire meter loop, and because a ready register template ships with the platform you do not have to work out a point map on site. The field agent polls the device every 60 seconds by default, writes the reading into a local queue first and then forwards it to the server over MQTT/TLS; nothing is deleted before the server acknowledges it. Hourly and daily summaries are derived from these raw readings, and the consumption and cost screens are fed from the same series.
| Protocol | M-Bus (EN 13757) two-wire meter loop |
| Connection path | The M-Bus loop is read through an M-Bus TCP gateway |
| Default polling period | 60 seconds (field agent) |
| Points in the ready template | 8 registers |
| Consumption calculation | Difference of the m³ index over the period |
| Data assurance | Local queue plus server acknowledgement; nothing is deleted before it is confirmed |
When Is This Model the Right Choice?
It is used to meter water consumption per flat, tenant or zone; the index is read remotely, so the monthly manual reading round is no longer needed. The same measurement forms the basis both for billing and for hunting leaks through night-flow analysis.
The M-Bus loop is two-wire and meters connect in parallel on the same pair, so no dedicated cable is pulled per meter. Loop length, conductor cross-section and the number of meters on the loop are assessed together, because an M-Bus gateway can only drive a limited load. Meter addresses (primary/secondary) are verified one by one during commissioning.