Ink penetrometer having fiber optic cables and stationary ink pa

Details Ink penetrometer having fiber optic cables and stationary ink pa Ink penetrometer having fiber optic cables and stationary ink pa

1994-04-14

1996-01-09

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

73 38, G01N 2186

Patent

active

054830788

ABSTRACT:
An improved penetrometer includes a stationary ink delivery system and an improved photohead, which connects to a light source and a photodetector via two fiber optic cables. A solid state electronic circuit automatically controls the operation cycle of the penetrometer, with a single start button controlling all operations of the instrument. In particular, there is no need to reset the clock timer to zero or to adjust the 100% reflectance value prior to each test. A ratio meter displays the ratio of the current reflectance to the locked-in initial reflectance in real time as the test proceeds.

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