Width Measurement Alarm Application

The customer wanted to measure the width of a web of a product as it was being manufactured. The product varied between 50 to 300mm wide and could wander a few mm over the rollers when it was being manufactured. The customer also wanted a simple display to:

• 1. Display the measured value before running and
• 2. Give an alarm if the width was + or – 1mm, by pushing one button.