Method of aligning a water level indicator having a remote and a

Details Method of aligning a water level indicator having a remote and a Method of aligning a water level indicator having a remote and a

1981-03-31

1983-08-09

Kreitman, Stephen A.

Measuring and testing

Liquid level or depth gauge

With illumination

356399, 356153, G01F 2300, G01B 1100

Patent

active

043971822

ABSTRACT:
A water level indicating apparatus (10) has an optical system (22) for establishing an optical signal indicative of water level which signal is split by a beam splitter (18) to transmit the majority of the optical signal to a fiber optic cable (16) and to reflect a part of the signal to a proximately located (13) glass diffuser (14). The end 24 of the cable (16) is reflected in the beam splitter (18) to form a reflection (24') which varies in intensity as the end (24) of the cable (16) is moved with the brightest reflection (24') appearing when the lamp(26) of the optical system (22) is in line with the end (24) of the cable (16).

REFERENCES:
patent: 3457018 (1969-07-01), Kloss
patent: 3518005 (1970-06-01), Weber
patent: 3531205 (1970-09-01), Nussmeier
patent: 3574467 (1971-04-01), Paine et al.
patent: 3713338 (1973-01-01), Kind
patent: 3718396 (1973-02-01), Hennings
patent: 3752587 (1973-07-01), Myers et al.
patent: 3782829 (1974-01-01), Herriott
patent: 3813169 (1974-05-01), Kaestner
patent: 3870416 (1975-04-01), Brady et al.
patent: 3871772 (1975-03-01), Munnedyn et al.
patent: 4260254 (1981-04-01), Braun
patent: 4294546 (1981-10-01), Killman et al.
Optical Alignment Device for Lasers; by R. Anstis in Optics Technology, May 1970, vol. 2, No. 2, p. 102.
Reflectance Scanner With Direct Viewing During Alignment, by Harrison, IBM Technical Disclosure, Jul. 1981, vol. 24, No. 2, p. 1201.

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