FEATURES
- Mains Isolated Electrode Circuit
- Safe Electrode Operating Voltage: 25 Volts (max)
- Relay Output: DPDT
- Relay Contact Rating: 5A @ 240VAC
- DIN Rail Mountable
LQ-451 – WATER LEVEL CONTROLLER
The LQ-451 monitors the level of conductive liquids and can be configured to perform any one of the following functions:
- High-Level Alarm
- Low Level Alarm
- Pumping In Control
- Pumping Out Control
OPERATION
PUMPING IN CONTROL / LOW-LEVEL ALARM
The relay in the unit is configured to energise and start the pump motor (or provide a low-level alarm signal) when the water level falls below the lower electrode (P2). The relay will remain on, until the water level reaches the upper electrode (P1).
PUMPING OUT CONTROL / HIGH-LEVEL ALARM
The relay in the unit is configured to energise and start the pump motor (or provide a high-level alarm signal) when the water level reaches the upper electrode (P1). The relay will remain on, until the water level falls below the lower electrode (P2).
SPECIFICATIONS
| Model | LQ-451 |
| Supply Voltage: | 230 VAC (+/-10%) / 50 to 60 Hz |
| Electrode Circuit: | 25 Vmax (Open Circuit), Isolated from Mains via Transformer |
| Operating Temp: | 5 to +50 degC |
| Relay Output: | DPDT, 5A @ 240VAC (resistive) |
| Modes: | The following modes are selectable (via jumpers): Mode A: Pumping In / Low-Level Alarm Mode B: Pumping Out / High-Level Alarm |
| Mounting: | DIN-Rail Mountable |
| Weight: | 300 g |
| Dimensions: | H112 x H55 x D73 mm |
ORDERING INFORMATION (PART NUMBERS)
- LQ-451(HL/PI) – Level Controller (Factory configured for High-Level Alarm and/or Pumping In Control)
- LQ-451(LL/PO) – Level Controller (Factory configured for Low-Level Alarm and/or Pumping Out Control)
