Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
WSE4SL-3N1137V

WSE4SL-3N1137V

SICK

SENSOR THROUGH-BEAM 60M NPN

0

WTT12L-B1562

WTT12L-B1562

SICK

SENSOR PROX 3.8M NPN/PNP 2M CBL

0

WLG4SC-3P3235HS05

WLG4SC-3P3235HS05

SICK

SENSOR RETROREFLECTIVE 5M PNP

0

GRTE18S-P23SEN

GRTE18S-P23SEN

SICK

SEN PHT PNP LO M12 MTL ANG

0

WL4-3P2260S27

WL4-3P2260S27

SICK

SENSOR RETROREFLECTIVE 4.5M PNP

0

HTB18L-B4A5AG

HTB18L-B4A5AG

SICK

SENSOR PROXIMITY 300MM NPN/PNP

0

EL3-P2417

EL3-P2417

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

WTB12-3P1111

WTB12-3P1111

SICK

SENSOR PROXIMITY 600MM PNP

0

ZT1-F3221

ZT1-F3221

SICK

SENSOR PROXIMITY 50MM PNP

0

WTT12L-B1548

WTT12L-B1548

SICK

SENSOR PROX 1.8M NPN/PNP 2M CBL

0

GRSE18-P2442

GRSE18-P2442

SICK

SENSOR THROUGH-BEAM 15M PNP

0

WLG4-3F2182

WLG4-3F2182

SICK

SENSOR RETROREFLECTIVE 1.6M PNP

0

ZT2-F5221

ZT2-F5221

SICK

SENSOR PROXIMITY 155MM PNP

0

ET3-N2238

ET3-N2238

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WTB4-3N3171

WTB4-3N3171

SICK

SENSOR PROXIMITY 150MM NPN DO/LO

0

WL4S-3P3130V

WL4S-3P3130V

SICK

SENSOR RETROREFL 10MM NPN DO/LO

0

EL3-P2438

EL3-P2438

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

GL6-P7511

GL6-P7511

SICK

SENSOR RETROREFLECTIVE 6MM PNP

0

WTB4-3P1371

WTB4-3P1371

SICK

SENSOR PROXIMITY 150MM PNP

0

WTT12L-B1568

WTT12L-B1568

SICK

SENSOR PROXIMITY 3.8M NPN/PNP

0

Optical Sensors - Photoelectric, Industrial

1. Overview

Industrial photoelectric sensors are optoelectronic devices that detect the presence or absence of objects by emitting and receiving light beams. These sensors convert optical signals into electrical signals through photodetection mechanisms, enabling non-contact measurement and control in industrial environments. Their importance lies in enabling automation, improving production efficiency, and ensuring process reliability across various sectors including manufacturing, logistics, and quality control.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Through-Beam SensorsSeparate emitter and receiver units for high detection accuracyConveyor belt object counting
Reflective SensorsSingle unit with reflector for compact installationsPackaging integrity verification
Diffuse SensorsObject-reflective detection without separate reflectorColor contrast detection in sorting systems
Fiber Optic SensorsFlexible light transmission for confined spacesSemiconductor manufacturing equipment
Slot SensorsU-shaped design for precise positional detectionPrinted circuit board alignment systems

3. Structure and Components

Typical construction includes: 1) Light source (LED/Laser diode) emitting specific wavelengths (660nm-950nm) 2) Photodetector (photodiode/CCD array) for signal reception 3) Signal processing circuitry with amplification and threshold detection 4) Protective housing with optical window (IP65-IP69K ratings) 5) Electrical interface (2-wire/3-wire configurations) Advanced models integrate temperature compensation and digital communication protocols (IO-Link).

4. Key Technical Specifications

ParameterSignificance
Detection RangeDetermines maximum operational distance (20mm-50m)
Response TimeMeasures detection speed (10 s-2ms)
AccuracyDefines position detection precision ( 0.02mm)
Environmental ResistanceSpecifies operating conditions (-40 C to +70 C, dust/water protection)
Output TypeIdentifies electrical interface (NPN/PNP, analog/digital)

5. Application Fields

Key industries include: - Automotive Manufacturing: Robotic welding verification - Logistics: Parcel dimension measurement systems - Food Processing: Fill-level detection in transparent containers - Electronics Assembly: Component presence verification - Medical Devices: Lab automation sample tracking Example: In automotive production lines, photoelectric sensors detect door panel alignment with 0.1mm precision at 2m/s conveyor speeds.

6. Leading Manufacturers and Products

ManufacturerCountryRepresentative Product
SiemensGermanyOBT1-16GM300-S91L
OmronJapanE3Z-T61
KeyenceJapanLKG50A-W15T
Pepperl+FuchsGermanyR2000-6
BalluffUSABOS 18M

7. Selection Recommendations

Key considerations: 1. Detection requirements: Distance, object size, and speed 2. Environmental factors: Ambient light, temperature, and contamination 3. Installation constraints: Space limitations and mounting options 4. Output requirements: Digital/analog signal compatibility 5. Cost-benefit analysis: Balancing precision with operational budgets Example: Choose fiber optic sensors for high-temperature furnace applications exceeding 100 C.

8. Industry Trend Analysis

Current development trends include: - Miniaturization through MEMS technology (sensor size reduction by 40% since 2015) - Integration of AI algorithms for adaptive threshold adjustment - Wireless communication capabilities (Bluetooth/Wi-Fi 6 adoption) - Increased sensitivity in visible light spectrum (enhanced color detection) - Growth in safety-rated sensors (SIL2/PLc compliance) Market projections indicate 8.2% CAGR through 2027 driven by Industry 4.0 adoption.

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