Control Relays
LLR-05U Liquid Level Control Relay with Adjustable Delay
ModelLLR-05U
Product overview
The VTEKE LLR-05U controls automatic filling and draining of liquid tanks using three sensing electrodes. It features adjustable sensitivity and a relay activation delay of 1 second to 30 minutes, with LED indication of electrode and relay status.
Applications
- Water storage tanks
- Automatic tank filling and draining systems
- Industrial liquid level monitoring
- Water pumping stations
- Liquid storage and transfer systems
- Industrial automation and pump control panels
Key features
- Automatic filling and draining control
- Three-electrode liquid level detection
- Adjustable sensitivity
- Adjustable relay activation delay: 1 s–30 min
- Pump control at minimum and maximum levels
- LED indication for relay, electrodes and delay
- Relay output for pump control
- DIN rail mounting
Specifications
Electrical Characteristics
| Operating Voltage (Un) | 85–250 V AC/DC |
|---|---|
| Operating Frequency | 50/60 Hz |
| Operating Power | <4 VA |
Control Characteristics
| Level Detection | Conductive electrodes |
|---|---|
| Sensitivity | 5–100 kΩ |
| Sensitivity Adjustment | Adjustable |
| Switching Time | 10 ms |
| Control Function | Automatic filling and draining |
| Electrode Configuration | B (bottom), L (lower), U (upper) |
| Delay Time (DT) | 1 second–30 minutes, adjustable |
Output Characteristics
| Contact Configuration | 1NO + 1NC (SPDT) |
|---|---|
| Contact Rating (Resistive Load) | 10 A at 28 V DC; 7 A at 250 V AC; 10 A at 125 V AC; 12 A at 120 V AC |
Operating Conditions
| Operating Temperature | -20°C to +55°C |
|---|
Mechanical Characteristics
| Mounting | DIN rail |
|---|---|
| Connection Type | Plug-in |
| Maximum Wire Size | 1.5 mm² |
| Dimensions (H × W × D) | 90.5 × 35.2 × 64.5 mm |
Full certificate register
CE conformitySample
Download certificate for CE conformityISO certificationSample
Download certificate for ISO certification
Ready To Specify Your Next Project?
Our sales engineers work directly with panel builders and procurement teams to specify the right product, confirm lead times, and coordinate international shipping.