The Omron 61F-GP-N-AC200 is a High/Low Level controller from the 61F series, designed for conductive liquid level detection in tanks, reservoirs, and process vessels. It operates on a 200VAC supply and outputs through a SPDT relay (2 Form C), rated at 3A @ 250VAC — enough to drive a small pump contactor or alarm directly. The sensitivity range of 0 ~ 4kOhm lets it work with a wide variety of conductive liquids — from clean water to mildly conductive process fluids — without needing a separate amplifier. The 1km maximum distance between controller and sensor probe means the electronics can sit in a central panel while the probes mount at the tank, keeping wiring runs manageable.
Mounting and Termination
Socketable with an 11-pin octal base — common in panel layouts. The plug-in termination means a failed controller swaps in seconds without rewiring the base.