Liquid Level Controller

The MODEL 409D Liquid Level Controller offers precise automatic liquid level management for industrial applications. Its solid-state sensing circuit ensures reliable operation, complemented by adjustable sensitivity from 1K to 100K ohms for diverse media. This unit features DPDT contacts rated at 7.5A @ 240 VAC resistive, providing robust switching capabilities. With a rapid 300ms response time and a 5-year unconditional warranty, the 409D is engineered for sustained performance. It operates across multiple voltage ranges, including 20-30 VAC, 90-140 VAC, and 200-250 VAC, consuming only 2.5W. The controller's expected mechanical relay life is 10,000,000 operations, ensuring durability. Designed for consistent, long-term utility in demanding environments, it withstands temperatures from -20° to 60° C and 0-97% humidity without condensation.