Fill indicator for fire extinguishing systems

Details Fill indicator for fire extinguishing systems Fill indicator for fire extinguishing systems

1981-03-09

1983-05-24

Gill, James J.

Measuring and testing

Liquid level or depth gauge

Float

73319, 73321, G01F 2312

Patent

active

043844863

ABSTRACT:
An improved indicator for fill content of a fire extinguishing system including a pressure vessel having an outlet through which the fire extinguishing material may flow. The indicator includes a non-magnetic, closed housing, mounted on the vessel and having one end within the vessel and the other end exteriorly of the vessel. At least one of the vessel and the housing are sealed to the atmosphere and a visual access opening is provided on the exterior end of the housing to allow one to look into the interior of the housing. A tape is mounted within the housing for movement in a path past the visual access opening and includes indicia along its length. A first magnet is carried by the tape within the housing while a second magnet is mounted for movement on the exterior of the housing and a float is provided to move the second magnet proportional to the level of fire extinguishing material therein thereby causing, through magnetic interaction, the first magnet to move the tape so that its indicia may be observed as an indication of the level of fill within the vessel.

REFERENCES:
patent: 3283578 (1966-11-01), Moore

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