The Omron 61F-GP-N8Y 110VAC is a High/Low Level conductive level controller from the 61F series, with a relay output and SPDT (2 Form C) contact arrangement rated at 3A @ 250VAC. It operates on a 110VAC supply and terminates via a standard 8-pin octal plug-in base. The sensitivity range of 0 to 4kOhm allows it to detect liquid conductivity in various media, and the maximum distance from controller to sensor is 1km — suitable for remote tank monitoring where the control panel sits centrally and the probes are at the vessel.
The 0~4kOhm sensitivity range governs the probe selection: a higher-resistance liquid (e.g., deionized water or certain process fluids) may require a more sensitive setting, while conductive solutions like brine or wastewater will trigger reliably across the band. The 1km maximum control-to-sensor distance is a cable-length limit — beyond that, voltage drop and stray capacitance can cause false triggering or failure to detect. The SPDT (2 Form C) relay output gives one normally-open and one normally-closed contact per pole, allowing fail-safe wiring for high- or low-level alarm logic. The 3A @ 250VAC contact rating is adequate for pilot-duty control of contactors or alarm annunciators, but not for direct motor switching.
Integration Notes
Socketable mounting via an 8-pin octal base means the controller plugs into a standard relay socket — no hardwiring to the unit itself, which simplifies replacement during line-down maintenance. Termination style is plug-in, 8-pin (octal), so verify the base pinout matches the existing wiring before committing the BOM line.