Device for monitoring a radioactive filling level measuring inst

Details Device for monitoring a radioactive filling level measuring inst Device for monitoring a radioactive filling level measuring inst

1977-05-20

1979-03-06

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

Fluent material level signalling

G01F 2300

Patent

active

041432703

ABSTRACT:
In a filling level measuring installation with a radioactive radiator, which can be rotated within a lead shield from a peripheral operating position opposite the measuring receiver into a central safety position, a second radiation detector is arranged on a rearward extension of the measuring path in such a manner that in the safety position, its distance from the radiator is smaller than in its operating position, so that the output signal of the second detector can serve for monitoring the radiator position.

REFERENCES:
patent: 3396870 (1968-08-01), Diamond et al.
patent: 3643096 (1972-02-01), Jeffries, Jr. et al.

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