Omron Level Controller -

61F-D Level Control Relay

For controlling the level of conducting liquids in tanks and containers
22.5mm width, DIN rail mounting or mounting by M4 screws
One or two probe operation
Selectable operation: filling or emptying
Output timer to stop relay chattering, adjustable from 0.1 to 10 seconds
Outputs can be set to self-hold at ON or OFF using self-holding circuits
Compatible with Omron range of electrodes, typical stock number 354-290