Fluid flow sensor having light reflective slider

Details Fluid flow sensor having light reflective slider Fluid flow sensor having light reflective slider

1987-11-23

1990-07-31

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340611, 7386174, 73DIG11, 2502311, G08B 2100

Patent

active

049453440

ABSTRACT:
A flow sensor for detecting the absence of a minimum fluid flow in a sprinkler system. The fluid acts upon a vane positioned in the fluid path. Movement of the vane controls the position of a slider. The slider's surface has reflective and nonreflective ends which, in response to the vane's movement reflect or absorb light from a light emission and detection means. The voltages from the light emission and detection means are monitored for indications of the fluid flow. The sensor uses a two wire signal transmitting system.

REFERENCES:
patent: 1967018 (1934-07-01), Bohner
patent: 2093600 (1937-09-01), Denzler
patent: 2808580 (1957-10-01), Fuller
patent: 2880802 (1959-04-01), Hube
patent: 3448442 (1969-06-01), Hube
patent: 4007628 (1977-02-01), Worcester
patent: 4051467 (1977-09-01), Galvin
patent: 4295044 (1981-10-01), Anderson et al.
patent: 4361189 (1982-11-01), Adams
patent: 4727886 (1988-03-01), Conrardy et al.

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