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Diffuse Reflection Infrared Sensors

Diffuse Reflection Infrared Sensor Overview


These sensors emit infrared light and detect the light reflected by a target. They enable object detection without a separate reflector, simplifying installation. Performance is consistent at close to mid range on conveyors, packaging lines, smart appliances, and industrial automation. Designs emphasize ambient light immunity and robust construction for demanding environments.


Key Advantages


Background Suppression


Suppression options reduce false triggers from nearby surfaces and mixed colors. This improves stability on complex lines and lowers nuisance stops.


Ambient Light Immunity


Optical filtering and anti-sunlight designs maintain detection near doorways, skylights, and outdoor interfaces. Useful for part ejection and hands-free panels.


Range and Response


Typical sensing up to approximately 1 m with millisecond-level response supports fast-moving parts and flexible mounting. Choose focused or wide-beam optics based on target size and line speed.


Performance on Dark or Curved Surfaces


Enhanced receivers and sensitivity control improve detection on black rubber, matte plastics, and curved components where return signals are weaker.


Compact Housings and Easy Mounting


M18 cylindrical and low-profile rectangular housings fit tight spaces. Alignment indicators and teach-in reduce setup time. Light/dark operate modes match control logic.


Outputs and Integration


Output Types


Select NPN/PNP for PLCs, relay outputs for broad interfacing, or logic-level signals for embedded controllers. NO/NC configurations support different control schemes.


Supply Voltage


Most models run on 12–24 VDC with low current draw. Variants for 5 V systems fit compact electronics and IoT nodes.


Operating Modes and Sensitivity


Toggle light/dark operate to match system logic. Adjust sensitivity via potentiometer or digital teach-in to balance detection and noise immunity.


Connectors and Wiring


Choose M12 connectors for quick maintenance or pre-wired pigtails for sealed installations. Clear pinouts and color-coded leads simplify wiring.


Model Lineup


XKC-KE200 Anti-sunlight Diffuse IR Sensor


Built for strong ambient light immunity. Suits entrances, loading docks, and sunlit lines. Adjustable sensitivity and a compact footprint support varied surfaces.


XKC-001A Infrared Diffuse Sensor


A versatile, cost-effective photoelectric option for presence detection on conveyors, packaging, and appliance panels. Fast response and straightforward setup.


Distance and Optics


Short to mid-range variants for precise foreground detection; long-range options to approximately 1 m. Focused beams suit small parts; wider beams suit broader targets.


Output Variants


Available with NPN/PNP, relay, or logic-level interfaces. Selectable NO/NC and light/dark modes support different controllers.


Environmental and Mechanical


IP65–IP67 sealing, operating temperature options for factory floors, M18 cylindrical or compact rectangular housings, and connector or cable styles.


Technical Specifications


Optical


Infrared wavelength with high ambient immunity, selectable spot sizes, sensing windows from short-range precision to long-range presence, and background suppression options.


Electrical


12–24 VDC supply (with select 5 V models), protection for short-circuit and reverse polarity, millisecond response, and low standby current.


Environmental


Dust and water protection up to IP67 and EMC robustness against fluorescent lighting and sunlight.


Mechanical


Rugged housings in stainless or reinforced polymers, vibration-resistant mounting, and alignment LEDs for quick setup.


Applications


Part Presence and Ejection


Confirm parts exiting stamping, molding, or assembly stations without a reflector. Fast response supports high-cycle machinery.


Conveyor Counting and Jam Detection


Count items, verify gaps, and detect jams on belts and chutes. Suppression helps ignore guides and sidewalls.


Hands-free Interfaces


Trigger proximity-based functions behind panels or bezels. Anti-sunlight designs work near windows and storefronts.


Robotics and Packaging


Detect pick/place success, tray occupancy, and label presence across varied colors and finishes.


Installation and Commissioning


Mounting


Position perpendicular to the target surface. Avoid direct alignment with strong backlights. Keep recommended spacing from reflective backgrounds.


Alignment and Teach-in


Use the alignment LED to maximize return signal. Set sensitivity via potentiometer or teach-in. Validate with target-present and target-absent tests.


Preventing False Triggers


Enable background suppression where available. Shield from direct sunlight when practical. Set light/dark modes consistent with control logic.


Selection Guide


By Target Material


For black or matte surfaces, choose higher sensitivity or suppression models. For shiny metals, use focused optics to limit stray reflections.


By Distance and Environment


Use short-range precision sensors in tight spaces. Choose long-range options up to about 1 m for flexible mounting or bright locations; select anti-sunlight versions as needed.


By Output and Interface


Match NPN/PNP or relay outputs to your controller. Select NO/NC based on system logic and connector style to suit maintenance needs.


Custom Development and Support


With 10+ years of design and production experience and 30+ patented technologies, we provide customized solutions, rapid prototyping, and application-specific tuning from optics to control. Contact us to discuss targets, environments, and interface needs, or request a quote for tailored specifications.


Related Categories and Complementary Products


Consider retro-reflective and through-beam photoelectric sensors for longer distances or transparent objects. Laser ranging options include XKC-KL800 and XKC-KL200 for precise distance. Human presence sensors (LD002 millimeter-wave, LD500B microwave, XKC-003K4 PIR) support space monitoring. Non-contact liquid level sensors serve tanks and pipelines.


Notes for This Category


Infrared often offers stronger immunity to ambient lighting than visible red. Glossy or transparent targets may be better served by retro-reflective or through-beam modes. Background suppression helps ignore distant backgrounds, and teach-in simplifies compensation for color and texture differences.

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