Description
Littelfuse LLC54BAS liquid level control part with two probes that is used in HVAC systems. It uses 120 Vac input and measures high and low levels of conductive fluids through the use of resistance sensing. This controller has a variable sensing resistance of up to 100k ohms, which helps in sensing the presence of the fingers without being affected by debris or foam on the touch screen. The liquid level is suitable for controlling liquid pumping operations such as filling or draining and has certain advantages like low electrolytic plating because of the pulsed DC voltage on the probes.
