Liquid level sensing device

Details Liquid level sensing device Liquid level sensing device

Category

G - Physics

Subcategory

01

Subsubcategory

F

IPC codes

G01F 23/74 (2006.01) G01F 23/72 (2006.01) G01F 25/00 (2006.01) H01H 36/02 (2006.01)

Type

Patent

Patent number

CA 2043684

Description

The invention is directed to a liquid level sensing device having a float (4) configured as a hollow body and slidably mounted on a slide tube (3) for the actuation of reed-type switches (11) provided ln the interior of the slide tube (3). In order to perform a check for proper functioning, the float (4) is movable independently of the filling level into a signalling position by an electromagnetic actuation device (15). The hollow space (7) of the float (4) contains a gas pressurized to above or below atmospheric and is connected via a flexible tube (12) to a pressure monitoring device (13) which responds whenever the gas pressure deviates from a predetermined value.

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