The ELHART ELV1 is designed for automatic liquid level control using filling or draining (emptying) algorithms, dry-running protection, indoor flood monitoring, and conductive liquids interface detection (by conductivity difference).
ELV1-D2 has 4 digital inputs and 2 relay outputs. The operating logic of the outputs is defined by one of four algorithms.
The controller supports conductive probes, NPN sensors, and dry-contact sensors, including float switches, reed switches, limit switches, etc.
| Parameter | Value |
|---|---|
| Power supply | |
| Supply voltage | 190…240 VAC / 50 Hz (Nominal: 220 VAC / 50 Hz) |
| Power consumption | 3 W |
| Input channels | |
| Number of inputs | 4 |
| Input type |
conductive probe, float switch, dry contact, NPN sensor (with external power supply) |
| Adjustable sensitivity | per-channel configuration 5...500 kΩ |
| Electrode voltage | max 2.5 VAC at 25 Hz |
| Electrode current | max 0.02 mA |
| NPN sensor voltage supply | max 30 VDC |
| Output channels | |
| Number of outputs | 2 |
| Output type | SPST relay (NO) |
| Max switching current and voltage | 5 A at 250 VAC 3 A at 30 VDC |
| General | |
| Indication | 3-digit 7-segment LED display 6 status LEDs |
| Operating algorithms |
1 — submersible pump control 2 — single-channel level controller with alarm monitoring 3 — dual-channel level controller 4 — sewage pumping station control |
| Environmental conditions | |
| Operating and storage temperature | -20…+50 °C |
| Relative humidity | 0...80% (without condensation) |
| Housing | |
| Overall dimensions (H×W×D) | 90.2×36.3×57.5 mm |
| Mounting | DIN-rail |
| Ingress Protection | IP20 |
| Insulation category | CATII (double insulation) |
| Conductor cross-section | max 2.5 mm² |
