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OPTICAL SENSORS MONITOR METALLIZED FILM PRODUCTION

OPTICAL SENSORS MONITOR METALLIZED FILM PRODUCTION Over the past ten years a noncontact resistance monitor has been developed for measuring the deposit above each evaporator on resistanceheated evaporative metallizers. This is the eddy current type. The flux from an RF coil links with the metallized film. The resultant induced current in the film, which is proportional to the thickness of the deposit, is measured see Figure 1. Normally, sensor coils are positioned in line with evaporators. The RF sensor head is located next to an insulated roller carrying the metallized film. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Sensor Review Emerald Publishing

OPTICAL SENSORS MONITOR METALLIZED FILM PRODUCTION

Sensor Review , Volume 12 (4): 2 – Apr 1, 1992

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0260-2288
DOI
10.1108/eb007889
Publisher site
See Article on Publisher Site

Abstract

Over the past ten years a noncontact resistance monitor has been developed for measuring the deposit above each evaporator on resistanceheated evaporative metallizers. This is the eddy current type. The flux from an RF coil links with the metallized film. The resultant induced current in the film, which is proportional to the thickness of the deposit, is measured see Figure 1. Normally, sensor coils are positioned in line with evaporators. The RF sensor head is located next to an insulated roller carrying the metallized film.

Journal

Sensor ReviewEmerald Publishing

Published: Apr 1, 1992

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