The F31 series are vertical float switches that are top mounted, via a flanged connection, from the outside of the tank. Access to the inside of the tank is not required for fitting the float switch.
These switches are ATEX certified for use in Zones 1 and 2.
These can be made with either 1, 2, 3 or 4 point level switches of either SPST or SPDT action. The electrical loom is fully insulated and encapsulated within the stem of the device.
This type has a manual check system that moves the floats, thereby checking the integrity of the switches and wiring on full or empty tanks. Padlock supplied to disable the check facility, when switch is in normal operation.