# Case Study Contrast Sensing Web Guiding for Textiles Converting > Always please input a summary so that views are handled properly. **Last updated:** 2026-03-07 **Source:** https://r2r.tech/documentation/case-studies/case-study-contrast-sensing-web-guiding-textiles-converting --- **Document Type:** Case Studies ## Application Upgrade of a web guide system for specialty center guiding with the latest Roll-2-Roll® Sensor System for Contrast Sensing. ## Customer Specialty Textiles Manufacturer - Illinois James Iglesias - Maintenance Engineer ## Customer Problem/Challenge Our customer wanted to guide the web based on a center selvage. They could not find a reasonable solution and had developed an in-house system that did not provide a satisfactory result. Our solution involved a contrast sensing application. ![Center Selvage in a Textile Web](https://r2r.tech/sites/default/files/inline-images/Center%20Selvage%20Guiding_0.jpg) ## Our Solution We offered them a SCU5 controller and WPS 221 white light sensor to connect to their current web guiding system. This would provide a detection of the position of the selvage within the specified tolerances and would give the output to the web guide mechanism to correctly position the web by using the contrast sensing application. ![Contrast Sensing Applications](https://r2r.tech/sites/default/files/inline-images/Untitled%20presentation%20%283%29_2.jpg) ## Results Once the personnel became familiar with the system they were satisfied with the results of the selvage guiding application. The customer liked the plug and play capacity of the systems and the uniqueness of the technology, considering that they had not found a reasonable application to solve their problem. The customer was able to avoid purchasing expensive replacement solutions that would have to be engineered to their specifications. [Read more in their testimonial.](https://r2r.tech/testimonials/selvage-guiding-textiles-contrast-sensing) ## Benefits - Quality of production - Material was kept in line based on the position of the selvage - Downtime reduction - Increased reliability of the system, less time spent working on adjusting the web guiding system. - Investment Savings - Upgrade allowed for use of existing web guide mechanism ## Why the customer chose us We provided **a simple to install and operate solution** for a problem that no one else has been able to help with. ## Transcript CASE STUDY: Contrast Sensing for Web Guiding Application Upgrade of a web guide system for specialty center guiding with the latest Roll-2-Roll ® Sensor System for Contrast Sensing.. Customer Specialty Textiles Manufacturer - Illinois James Iglesias - Maintenance Engineer Customer Problem/Challenge Our customer wanted to guide the web based on a center selvage. They could not find a reasonable solution and had developed an in-house system that did Benefits not provide a satisfactory result. Our solution involved a ➢ Quality of production - Material was kept in line contrast sensing application. based on the position of the selvage ➢ Downtime reduction - Increased reliability of Our Solution the system, less time spent working on adjusting the web guiding system. We offered them a SCU5 controller and WPS 221 white ➢ Investment Savings - Upgrade allowed for use light sensor to connect to their current web guiding of existing web guide mechanism system. This would provide a detection of the position of the selvage within the specified tolerances and would give the output to the web guide mechanism to Why the customer chose us correctly position the web by using the contrast sensing We provided a simple to install and operate solution for application a problem that no one else has been able to help with. Results Products Involved Once the personnel became familiar with the system they were satisfied with the results of the selvage guiding application. SCU5 D Controller for Web Monitoring The customer liked the plug and play capacity of the systems and the uniqueness of the technology, considering that they had not found a reasonable application to solve their problem. The customer was able to avoid purchasing expensive WPS 221 WL Sensor replacement solutions that would have to be engineered For Contrast Sensing to their specifications. Read more about their satisfaction in this testimonial. Roll-2-Roll Technologies LLC, 1110 S Innovation Way Dr, Stillwater, Oklahoma 74074 Phone # +1-888-290-3215, Email: sales@r2r.tech Website: https://r2r.tech ## Downloads - [Case Study Contrast Sensing Web Guiding -Textiles (1).pdf](https://r2r.tech/sites/default/files/2021-09/Case%20Study%20Contrast%20Sensing%20Web%20Guiding%20-Textiles%20%281%29.pdf) ## Related Products - Web Position Sensor - SCU5 - Upgrade Kit **Tags:** Web Position Sensor, SCU5, Upgrade Kit --- ## About Roll-2-Roll Technologies Roll-2-Roll Technologies LLC, headquartered in Stillwater, Oklahoma, manufactures patented fiber-optic web position sensors and web guiding systems for roll-to-roll manufacturing. Products include ODC edge sensors (48mm to 960mm), 1DC all-in-one sensors, SCU-series controllers, and complete web guide systems. - Website: https://r2r.tech - Phone: +1 (888) 290-3215 - Email: sales@r2r.tech