Sensor releases electronic nip analysis system
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Sensor Products product story
Edited by the Engineeringtalk editorial team
Oct 30, 2008
Sensor Products has introduced Mini Sigma-Nip, an electronic nip analysis system that measures roller profiles and diagnoses and helps correct roll alignment.
Mini Sigma-Nip can measure nip widths of rolls with circumferences smaller than 20in (51cm) and can also diagnose and measure larger hard rolls that have narrow contact upon closing.
The 168 microscopic sensor points that comprise each finger are densely packed in a 3.3in (8.4 cm) active sensing area.
The sensors capture data and record nip width readings while being viewed on a laptop or computer that has been connected through wireless or USB.
Adjustments to load are made in real time while the sensors are in the closed (non-rotating) nip.
Problems with alignment, skewing and crown deficiencies are quickly exposed.
The system is portable and versatile and, depending on the number of sensors ordered, the same sensor chain can be used to measure different sized rolls.
Mini Sigma-Nip is useful for continuous maintenance, as well as during equipment setup and shutdown.
Data that has been stored can be easily reviewed.
Web control is improved as evenly loaded roller sets are less likely to cause web breaks and down time.
It reduces uneven material pulling, sheet walking, wrinkles, jams and print mis-registration.
The software includes a comparison mode, where up to three nip-width readings can be viewed simultaneously, and an alignment tool, which instantly draws a line to indicate nip-width variations.
The system prompts the user through the few steps needed for installation and set up.
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