Richard Lahrson (tripspud@hooked.net)
Tue, 19 Jan 1999 15:29:12 -0800
> It is still a very useful tool for B&W work. The calibration will be
> about right as long as the Selenium cell is OK. This should be checked
> with a step wedge. Selenium cells become non-linear when they are damaged.
> On the analyser this will show up as low densities reading too low compared
> to high densities.
Richard,
Even if the Selenium cell is damaged, would the machine still be
useful by comparing density readings against a step wedge?
Yours,
Rich Lahrson
tripspud@hooked.net
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