The Omron 61F-GP-N8-V50 AC110 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 110VAC supply and provides SPDT relay output (2 Form C) rated at 3A @ 250VAC — enough to drive a small pump contactor or alarm directly. The adjustable sensitivity range of 0 to 50 kΩ lets you tune it for different liquid conductivities, from clean water to mildly conductive process fluids. Socketable via an 8-pin octal base. The controller can sit up to 50 meters from the sensing electrodes.
Sensitivity and Application Fit
The 0 to 50 kΩ sensitivity adjustment sets the threshold resistance between the probe and common. The High/Low type means it has two setpoints: one for high-level (pump off or alarm) and one for low-level (pump on or refill). The relay contacts switch accordingly, making it a direct replacement for float-switch logic in many tank-level applications.