Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1987-11-16
1989-04-25
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
378 54, 2503591, G01N 2306
Patent
active
048250775
ABSTRACT:
A system and related method for sensing a parameter of a medium by means of radiation attenuation, the system including a radiation source for emitting radiation that will be attenuated as a function of the parameter upon passage through the medium and a radiation detector operatively positioned to detect the radiation that will be attenuated as aforesaid, and the system being further characterized by the detector comprising a scintillator probe for producing an electrical current output proportionally representative of detected radiation, a current integrator for continuously integrating the electrical current output of the scintillator probe, the current integrator having an input for receiving the electrical current output of the scintillator probe and an output for producing an electrical output representative of the integral of curernt received at the input thereof, a charge injector for supplying to the input of the current integrator current pulses of predetermined total charge and of opposite polarity relative to the electrical current output of the scintillator probe in response to the output of the current integrator having a predetermined characteristic, and a detector output for generating count signals at a frequency proportionally representative of the frequency at which the current pulses are supplied to the input of the current integrator by the charge injector.
REFERENCES:
patent: 3668401 (1972-06-01), Shah et al.
patent: 3832550 (1974-08-01), Bartlett et al.
patent: 3959653 (1976-05-01), Lee et al.
patent: 4075701 (1978-02-01), Hofmann
patent: 4160165 (1979-07-01), McCombs et al.
patent: 4353028 (1982-10-01), Faddegon
Sicking David H.
Tawil Riad A.
Fields Carolyn E.
Hanig Richard
The Harshaw Chemical Company
LandOfFree
Process control system and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process control system and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process control system and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1197561