Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1989-06-01
1991-03-26
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250343, 2502521, 73 1G, G01N 2161
Patent
active
050031759
ABSTRACT:
The photometer is calibrated by using a permanently built-in installation of four, similarly configured chambers in a good heat conducting carrier which is slidably interposed between sample and reference chambers on one hand and the detection structure on the other hand. One pair of these chambers is placed in the paths during measurement and is filled with inert gas, the other pair has one chamber filled with calibration gas, the other one with inert gas. All chambers are closed with similar windows.
REFERENCES:
patent: 2674696 (1954-04-01), Smith et al.
patent: 3072787 (1963-01-01), Moyat
patent: 3193676 (1965-07-01), Smart
patent: 3560738 (1971-02-01), Strange
patent: 3805074 (1974-04-01), McCormack
patent: 4204768 (1980-05-01), N'Guyen
patent: 4673812 (1987-06-01), Yoneda
patent: 4794255 (1988-12-01), Miyatake et al.
Fabinski Walter
Taubitz Georg
von Wolfframsdorff Joachim H.
Glick Edward J.
Hannaher Constantine
Hartmann & Braun AG
Siegemund Ralf H.
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