Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1986-02-24
1987-11-10
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
250379, H01J 4702
Patent
active
047059486
ABSTRACT:
A helium ionization detector for gas chromatography is operated in a constant current, pulse-modulated mode by configuring the detector, electrometer and a high voltage pulser in a closed-loop control system. The detector current is maintained at a fixed level by varying the frequency of fixed-width, high-voltage bias pulses applied to the detector. An output signal proportional to the pulse frequency is produced which is indicative of the charge collected for a detected species.
REFERENCES:
patent: 3634754 (1972-01-01), Lovelock et al.
patent: 3897344 (1975-07-01), Marshall, III et al.
patent: 4117332 (1978-09-01), Felton et al.
patent: 4538066 (1985-08-01), Carle et al.
Andrawes et al, "Saturation Region of HID . . . ", Anal. Chem. 52 (1980), 891.
Lovelock, J., "EAD and Technique for use . . . ", Anal. Chem. 35 (1963), 474.
Ramsey Roswitha S.
Todd Richard A.
Breeden David E.
Fields Carolyn E.
Hamel Stephen D.
Hanig Richard
Hightower Judson R.
LandOfFree
Closed-loop pulsed helium ionization detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Closed-loop pulsed helium ionization detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Closed-loop pulsed helium ionization detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1069528