The LLC4 combines resistance sensing circuitry with solid state timing to provide single probe level maintenance. On adjustable units, the sensitivity adjustment allows accurate level sensing while ignoring foaming agents and floating debris. Isolated AC voltage is provided at the probe to prevent electrolysis. A trickle current of less than 1 mA determines the presence or absence of conductive liquid between the probe and common. The LLC4 Series can be used with many types of low voltage (resistance changing) transducers to perform other control functions like temperature limit control, photo limit control, condensation sensing, and ice sensing.
Single Probe Level Control for Conductive Liquids
Adjustable or Fixed Sensing up to 250 KΩ
Fixed Fill or Drain Operation available
24, 120, or 230 V AC Models are Available
Adjustable or Fixed Time Delay Prevents Rapid Cycling
Isolated AC Voltage on the Probes
10 A Resistive SPDT Isolated Contacts
The LLC5 provides dual probe conductive liquid level control in a convenient octal plug-in package. Models are available for fixed fill or drain operation. Isolated, pulsed DC voltage on the probes prevents electrolytic plating. Less than 1 mA of current is used to sense the presence of conductive liquid between the probes and common. On adjustable units, the sensitivity adjustment eliminates false tripping caused by floating debris and foaming agents. New diagnostic LED option speeds setup and trip point adjustment by displaying when the unit senses conduction between the probes and common. This new LED operation can also decrease system troubleshooting time by displaying the relay status and probe conduction.
Dual Probe Level Control for Conductive Liquids
Onboard Knob or Fixed Sensing up to 100KΩ
Fill or Drain Operation Available
Select Standard or Diagnostic LED Operation
Diagnostic LED Operation Reduces Adjustment & Troubleshooting Time
