Explosion-proof device for measuring liquid levels

Details Explosion-proof device for measuring liquid levels Explosion-proof device for measuring liquid levels

1981-09-18

1983-05-17

Caldwell, Sr., John W.

Electricity: circuit makers and breakers

Float

Float and pressure

73313, 340624, H01H 3518, G01F 2312

Patent

active

043841848

ABSTRACT:
A liquid level registering device in a tank of liquid includes a non-magnetic tube surrounded by a movable magnetic float. The tube contains a dielectric oil and reed switches which are fixed at different levels. When the level of liquid carries the magnetic float to the same vertical level as a particular switch, that switch changes its state.

REFERENCES:
patent: 2457939 (1949-01-01), Stroup
patent: 3200645 (1965-08-01), Levins
patent: 3437771 (1969-04-01), Nusbaum
patent: 3484774 (1969-12-01), Borgnakke
patent: 3646293 (1977-02-01), Howard
patent: 3976963 (1976-08-01), Kubler
patent: 4056979 (1977-11-01), Bongort et al.

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