Description
The Littelfuse LLC54BA Liquid Level Control is a dual-probe conductive level control part that is suitable for use in HVAC system applications. It works at 120 VAC and uses the resistance to measure high and low levels of the liquid to facilitate the proper functioning of the pump. The part has an SPDT output with isolation, the adjustable sensing resistance is up to 100 kΩ, and the response time is less than 1 second. It does not trigger from debris and foam and has a pulsed DC voltage on the probes to prevent electrolytic plating.
