Request Information
The LPC420R (Level Probe Converter with Relays) shall sense liquid level and provides a 4 to 20 mA analog output for use by a pump controller or PLC to control liquid level. The LPC420 shall monitor the ten electrodes on a conductance Level Probe, and provide an analog signal that is proportional to the level. The LPC420R shall provide 10 relay outputs with contacts that close as the liquid covers the respective Level Probe electrodes.
Unit of Measure

Specifications

Maximum Input Power

 N/A 7.7 V·A24 VDC ± 10%, 160 mA 120 VAC ± 10%

Non-Isolated Analog Output Current

 N/A 4 to 20 mA

Analog Output Maximum Load

 N/A 600 O

Relay Output at 120 Volt Alternating Current (AC) Voltage

 N/A 6

Sensor Output Voltage

 N/A ± 8 V Square Wave at 60 Hz

Maximum Sensor Output Current (Per Sensor)

 N/A 0.8 mA

Operating Temperature

 N/A -20 to +65 ºC

Storage Temperature

 N/A -45 to 85 ºC

Enclosure Material

 N/A Din Rail Mounted Aluminum

Sensor Output Current

 N/A 4 to 20 mA

Sensor Output (±)

 N/A 8 V

Nominal Direct Current (DC) Voltage

 N/A 24 V120 V

Additional Description

N/A

All setup shall be done using four DIP switches on the face of the LPC420R. The Sensitivity of the unit shall be set for the type of liquid being detected. The Analog Output Delay setting provides shall control how fast the analog output transitions from one level output value to another. The Analog Output Delay setting value shall take approximately ten times the selected setting to go from 4mA to 20mA when the electrodes are covered quickly. When the electrodes are slowly covered one at a time, the Analog Output Delay shall provide a smooth transition as the level changes from electrode to electrode.

The LPC420R shall have an aluminum, Din Rail mountable enclosure. There shall be no openings in the LPC420R enclosure for debris to enter. The face of the LPC420R shall provide visual indication for the Level Probe electrodes that have been covered with water.

The LPC420R shall be powered by either 120 VAC or 24VDC, and provide a ground lug for proper connection to panel/earth ground. The Sensor output voltage shall be a ± 8V Square wave for use with a conductance Level Probe. The Level Probe Converter with relays shall be a UL Listed product.