Integrating photometer

Details Integrating photometer Integrating photometer

1983-02-22

1987-02-17

McGraw, Vincent P.

Radiant energy

Invisible radiant energy responsive electric signalling

Ultraviolet light responsive means

356215, 355 83, G01J 146

Patent

active

046441654

ABSTRACT:
An integrating photometer for measuring total exposures to ultraviolet radiation. The circuit for the photometer includes a threshold limiter to suppress operation of the integrator until the illumination level exceeds a predetermined threshold. A power saving circuit turns the photometer off when no illumination is received during a predetermined time interval.

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