A Precision Direct-Reading Densitometer
A photoelectric densitometer of the direct-reading type is described. A logarithmic amplifier circuit has been modified so as to give an accurately linear output with high stability. The instrument covers a density range of 0 to 3.0. Pertinent optical, electrical, and performance factors are discussed.
- Print ISSN
- 0097-5834
- Published
- 1942-02
- Content type
- Original Research
- DOI
- 10.5594/J09927
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