# WPS 900

> WPS 900 is a versatile sensor with a 901.4 mm (35.49") sensor range. It accommodates up to 1720 mm (67.8”) of web width change without the need for sensor repositioning. When compared to mechanical sensor repositioners, the WPS 900 can achieve better accuracy, higher productivity, and longer life at a lower cost.

**Last updated:** 2026-03-03

**Source:** https://r2r.tech/sensors/wps-900

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> The Widest Sensing Range for Edge Detection and More

## Specifications

| Sensor Type | Fiber Optic (diffuse-reflective) | Sensing Range | 900 mm (35.4 in) |
| ----------- | -------------------------------- | ------------- | ---------------- |
| Image Sensor | 1D image sensor | Resolution | 0.127 mm (0.005 in) |
| Repeatability | >99.9% | Working Distance | 15-25 mm (0.6-1.0 in) |
| Response Time | 20 ms standard | Operating Temp | -10°C to 65°C (14°F to 150°F) |
| Protection Class | IP54 | Controller Required | Yes (SCU5 only) |
| Status | Legacy Product – Consider ODC 960 for new installations |

## Features

- Zero recalibration – sensor adapts automatically to any material (clear, opaque, metallic, nonwoven, mesh)
- Extra-large sensing range – 900 mm (35.4 in) for the widest web applications
- Material-agnostic detection – fiber-optic technology based on light scattering and spatial filtering
- Temperature immune – unlike ultrasonic sensors, performance unaffected by temperature changes
- One sensor, multiple applications – edge guiding, width measurement, centerline detection

## Benefits

- Stop losing hours to sensor recalibration when switching between materials
- Eliminate changeover delays – no manual sensor adjustments between product runs
- End quality escapes caused by undetected sensor drift between changeovers
- Remove safety risks from operators accessing sensors in awkward positions
- Prevent hidden scrap from temperature-related inaccuracies that plague ultrasonic sensors

*Note: WPS is a legacy product line. For new installations, consider the *[ODC 960](https://r2r.tech/products/sensors/odc-960)(https://r2r.tech/products/sensors/odc-960)* with enhanced features.*

## Applications

- Edge position sensing on extra-wide web applications
- Web guiding for wide converting, coating, and laminating lines
- Width measurement for wide materials
- Centerline detection

## Product Details

- **Web Widths:** Extra Wide (>72"), Extra Wide (>72")
- **Line Speeds:** 100-500 fpm
- **Material Types:** Nonwoven, Nonwoven
- **Lead Time:** Legacy - Contact for Availability

## Documentation

**3D Model (STEP):** [1in Mounting Bracket for WPS and ODC Sensors](https://r2r.tech/documentation/3d-models/1in-mounting-bracket-wps-and-odc-sensors.md)

**Additional documentation:**
- [1.5in Mounting Bracket for WPS and ODC Sensors](https://r2r.tech/documentation/3d-models/15in-mounting-bracket-wps-and-odc-sensors.md)
- [Mounting Bracket for 1.5in or 40mm Extrusion for WPS, ODC and 1DC Sensors](https://r2r.tech/documentation/3d-models/mounting-bracket-15in-or-40mm-extrusion-wps-odc-and-1dc-sensors.md)
- [Mounting Bracket for 1in or 25mm Extrusion for WPS, ODC and 1DC Sensors](https://r2r.tech/documentation/3d-models/mounting-bracket-1in-or-25mm-extrusion-wps-odc-and-1dc-sensors.md)
- [New Mounting Brackets for WPS, ODC and 1DC sensors - 1.5 in or 40 mm extrusion](https://r2r.tech/documentation/2d-drawings/new-mounting-brackets-wps-odc-and-1dc-sensors-15-or-40-mm-extrusion.md)
- [New Mounting Brackets for WPS, ODC and 1DC sensors - 1in or 25 mm extrusion](https://r2r.tech/documentation/2d-drawings/new-mounting-brackets-wps-odc-and-1dc-sensors-1in-or-25-mm-extrusion.md)
- [ODC and WPS Installation for Center Guiding and Web Width Measurement](https://r2r.tech/documentation/manuals/odc-and-wps-installation-center-guiding-and-web-width-measurement.md)
- [Roll-2-Roll® Sensor: WPS 900 Product Brochure](https://r2r.tech/documentation/wps-900-product-brochure.md)
- [Roll-2-Roll® Sensor: WPS Product Brochure](https://r2r.tech/documentation/brochures/roll-2-rollr-sensor-wps-product-brochure.md)
- [Sensor Installation Recommendations: Inspection Applications](https://r2r.tech/documentation/manuals/sensor-installation-recommendations-inspection-applications.md)
- [WPS 112/221/440/900 or ODC 96/192/288/384/480/768/960 Sensor Installation for to Reduce the Effect of Twist](https://r2r.tech/documentation/manuals/wps-112221440900-or-odc-96192288384480768960-sensor-installation-reduce.md)
- [WPS 900-xx QD](https://r2r.tech/documentation/3d-models/wps-900-xx-qd.md)

**Tags:** WPS Sensors, WPS 900, Sensors, Infrared Sensor, Width Measurement Sensor, Thread counting and monitoring, Web Edge Sensors, Contrast Sensors

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## About Roll-2-Roll Technologies

Roll-2-Roll Technologies designs and manufactures patented fiber-optic web position sensors and advanced web guiding controllers — the precision measurement and control core of modern roll-to-roll manufacturing. Spun out of Oklahoma State University's Web Handling Research Center and trusted by Fortune 500 medical, battery, and nonwovens manufacturers, our patented sensors work without recalibration at ±0.1mm accuracy up to 760 mpm — typical customer outcomes are 50%+ less downtime and payback under six months. Headquartered in Stillwater, Oklahoma, our team of PhDs, controls engineers, and industry veterans extends the sensor + controller core into complete web guide systems including stepper-motor-based linear actuators (RLA, BLA, LHS).

- Website: https://r2r.tech
- Phone: +1 (888) 290-3215
- Email: sales@r2r.tech