The Omron 61F-GP-N8L-4KM AC120 is a High/Low Level controller from the 61F series, designed for conductive liquid level detection. It operates on a 120VAC supply and outputs via a SPDT (2 Form C) relay rated at 3A @ 250VAC. Sensitivity is adjustable from 0 to 0.5 kOhm, which means it can detect liquids with conductivity as low as that range — useful for distilled water or low-conductivity process fluids where standard probes might not trigger. The controller can be mounted up to 4 km from the sensing electrodes, making it suitable for remote tank farms or distributed water/wastewater systems where the control panel sits far from the vessel. Termination is via an 8-pin octal plug-in base (socketable), so replacement is a pull-and-swap without rewiring — a clear advantage for MRO spares on existing panels.
Sourcing & Lifecycle
The 61F-GP-N8L-4KM AC120 is listed as active in production, so it remains a standard catalog item through normal Omron distribution channels. No end-of-life notice or last-time-buy window is in effect.