The Erhardt+Leimer Digital Infrared Edge Sensor Model 00484125 (Technical Description: Infrared sensor dig. opt./mech +/-10mm-00484125), engineered and manufactured by Erhardt+Leimer GmbH in Augsburg, Germany, is a high-precision edge position detector designed specifically for closed-loop web guiding and steering frame systems.

Operating Principle & Digital Infrared Optical Architecture:
The sensor operates via high-frequency modulated infrared transmission across a calibrated optical throat. As the moving web enters the measuring gap, it partially attenuates the projected infrared beam. The digital optical receiver evaluates this proportional light extinction and calculates the exact spatial lateral position of the web edge:
- ±10 mm Active Measuring Span (20 mm Total Range): Provides a balanced measuring window that accommodates standard lateral web wander while delivering sub-millimeter positioning accuracy.
- Complete Ambient Light Rejection: Utilizing high-frequency modulated infrared wavelengths, the sensing electronics remain completely unaffected by plant illumination shifts, fluorescent lighting flicker, or direct sunlight.
- Robust Optical/Mechanical Housing (dig. opt./mech): Built with an industrial mechanical fork bracket that resists mechanical deformation, vibration, and dust buildup, providing reliable tracking of opaque, translucent, printed, and metallized web materials.

Key Engineering Features & Operational Advantages:
- High-Speed Digital Telemetry: Delivers low-latency edge deviation data directly to Erhardt+Leimer digital controllers (DCS, DC 6000, DO 2000, or Command Station modules), ensuring steering carriages and oscillating unwinds respond instantaneously to web skewing at high line speeds.
- Autonomous Drift & Opacity Compensation: Advanced micro-controller algorithms dynamically adjust to minor optical density shifts, maintaining consistent edge detection thresholds across diverse substrate materials.
- Rugged IP65 Heavy-Duty Metallurgy: Encased in a solid die-cast aluminum housing sealed against airborne paper lint, textile dust, and moisture. Designed for continuous 24/7 industrial duty under harsh plant conditions.
- Intuitive Visual Alignment Diagnostics: Equipped with integrated multi-segment LED status indicators showing real-time web edge position (left, right, or centered), allowing maintenance technicians to position and mechanically zero the sensor quickly during reel changeovers.

Target Industrial Sectors & Applications:
- Flexible Packaging & Converting: Edge guiding on high-speed rotogravure presses, flexographic printing machines, solventless laminators, and slitter rewinders.
- Lithium-Ion Battery Manufacturing: Ultra-precise edge alignment of continuous anode/cathode foil coatings and micro-porous separator films in coating, calendering, and slitting lines.
- Paper & Board Mills: Tracking web edges and continuous trim control on paper machines, sheeters, and winders.
- Technical Textiles & Non-Wovens: Guiding non-woven fabrics, spunbond medical webs, and woven fabrics through stenter frames and inspection tables.
- Rubber & Tire Manufacturing: Lateral position control of rubberized calendered cord sheets and tread extrusions.

• Manufacturer: Erhardt+Leimer (Erhardt+Leimer GmbH)
• Country of Origin: 100% Germany (Made in Germany)
• Product Line: Digital Infrared Web Guiding Edge Sensors
• Factory Material Number: 00484125
• Technical Designation: Infrared sensor dig. opt./mech +/-10mm-00484125
• Sensing Technology: Modulated high-frequency infrared light barrier
• Active Measuring Range: ±10 mm (Total 20 mm scanning window)
• Measurement Resolution: ≤ 0.02 mm (20 µm)
• Linearity: High linearity across the entire ±10 mm range
• Dynamic Response: Real-time sampling suitable for high-speed continuous webs
• Light Source: Infrared LED array (~880 to 950 nm modulated spectrum)
• Ambient Light Immunity: Completely immune to ambient plant and artificial light
• Web Materials Supported: Opaque films, translucent films, printed paper, metal foil, textiles, non-wovens
• Output / Bus Interface: Digital interface compatible with Erhardt+Leimer controllers (DCS / CAN / Analog bus)
• Status Indication: Integrated LED indicators for operational status and edge position tracking
• Power Supply Requirements: 24 VDC (±10%) supplied via E+L controller link
• Current Consumption: Optimized low-power circuit design
• Connector Interface: Heavy-duty vibration-proof industrial round connector
• Housing Construction: Die-cast aluminum alloy with protective industrial finish
• Ingress Protection Rating: IP65 conforming to EN 60529 (sealed against dust and water jets)
• Operating Temperature Range: 0°C to +50°C (+32°F to +122°F)
• Storage Temperature Range: -20°C to +80°C
• Quality & Environmental Approvals: CE marked, RoHS compliant, ISO 9001 certified manufacturing.