Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
HSE18-G4A1BI

HSE18-G4A1BI

SICK

SENSOR THROUGH-BEAM 20M PNP

0

WTB4-3P2262

WTB4-3P2262

SICK

SENSOR PROXIMITY 150MM PNP

0

GTB10-N1212

GTB10-N1212

SICK

SENSOR PROXIMITY 950MM NPN

0

WTV4-3P3121

WTV4-3P3121

SICK

SENSOR PROXIMITY 50MM PNP

0

WTT12L-B2567

WTT12L-B2567

SICK

SENSOR PROXIMITY 3.8M NPN/PNP

0

GL10-N1112

GL10-N1112

SICK

SENSOR RETROREFLECTIVE 15M NPN

0

HL18-M1G3AD

HL18-M1G3AD

SICK

SENSOR RETROREFLECTIVE 6.5M

0

ET4-E2215

ET4-E2215

SICK

SENSOR PROXIMITY 60MM NPN

0

WL4S-3P3432V

WL4S-3P3432V

SICK

SENSOR RETROREFL 10MM NPN DO/LO

0

WTB27-3P3741

WTB27-3P3741

SICK

SENSOR PROXIMITY 1.1M PNP

0

WTV4-3P2140S32

WTV4-3P2140S32

SICK

SENSOR PROXIMITY 50MM PNP

0

WSE4-3P3131

WSE4-3P3131

SICK

SENSOR THROUGH-BEAM 4M PNP

0

ZT2-F4228

ZT2-F4228

SICK

SENSOR PROXIMITY 100MM PNP

0

GL6-P7111

GL6-P7111

SICK

SENSOR RETROREFLECTIVE 5MM PNP

0

WL2SG-2P3235

WL2SG-2P3235

SICK

SENSOR RETROREFLECTIVE 1.2M PNP

0

GTB6-N6212

GTB6-N6212

SICK

SENSOR PROXIMITY 100MM PNP

0

EL3-P2838

EL3-P2838

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

GL10-N1212

GL10-N1212

SICK

SENSOR RETROREFLECTIVE 15M NPN

0

WTB9L-3P3491

WTB9L-3P3491

SICK

SENSOR PROXIMITY 400MM PNP

0

HL18-P2B3BA

HL18-P2B3BA

SICK

SENSOR RETROREFLECTIVE 6.5M 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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