Method and apparatus for real-time in-line material monitoring

Details Method and apparatus for real-time in-line material monitoring Method and apparatus for real-time in-line material monitoring

1989-05-19

1991-06-04

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 250343, 2503581, 2503591, G01N 2135

Patent

active

050216627

ABSTRACT:
An apparatus (10) for real-time in-line monitoring of a material (26) comprises a blackbody source (12), a first set of reflective surfaces (17) and a second set of reflective surfaces (38). Electromagnetic radiation (16) is emitted from the blackbody source (12) into the first set of reflective surfaces (17), which directs the radiation to a flow stream or material (26) which is to be tested. The radiation passes through or is reflected from the material (26). A transmission spectrum, resulting from the passage of the radiation through the material (26) or the reflection from the material (26), is then received by the second set of reflective surfaces (38). The second set of reflective surfaces (38) diffracts the transmission spectrum (34-36) and focusses the diffracted spectrum onto a detector (52). The detector (52) provides transmission spectrum data to a microprocessor (58) for comparison to a characteristic spectrum of the material (26) for determination of the necessity of a process adjustment.

REFERENCES:
patent: 3218914 (1965-11-01), Bartz et al.
patent: 4084906 (1978-04-01), Bibbero
patent: 4227083 (1980-10-01), Sherinski
patent: 4859064 (1989-08-01), Messerschmidt et al.

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