Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
KT8L-N3656

KT8L-N3656

SICK

SENSOR 10MM NPN DO/LO

0

WTB4S-3P3265H

WTB4S-3P3265H

SICK

SENSOR PROXIMITY 500MM PNP

0

WTB12-3N2411

WTB12-3N2411

SICK

SENSOR PROXIMITY 600MM NPN

0

WTB4SL-3P2462V

WTB4SL-3P2462V

SICK

SENSOR PROXIMITY 300MM PNP

0

HTE18-B4A2BB

HTE18-B4A2BB

SICK

SENSOR PROXIMITY 600MM NPN/PNP

0

WTB4S-3N1135

WTB4S-3N1135

SICK

SENSOR PROXIMITY 120MM NPN

0

WTV4-3P1040S42

WTV4-3P1040S42

SICK

SENSOR PROXIMITY 50MM PNP

0

ET4-P3215

ET4-P3215

SICK

SENSOR PROXIMITY 50MM PNP

0

WTB4S-3P2235VS07

WTB4S-3P2235VS07

SICK

SENSOR PROXIMITY 120MM PNP

0

GRL18S-N1136

GRL18S-N1136

SICK

SENSOR RETROREFLECTIVE 7.2M NPN

0

WSE4S-3P2130V

WSE4S-3P2130V

SICK

SENSOR THROUGH-BEAM 5M PNP

0

HL18-L1G2AB

HL18-L1G2AB

SICK

SENSOR RETROREFLECTIVE 6.5M

0

HSE18L-A1G5BA

HSE18L-A1G5BA

SICK

SENSOR THROUGH-BEAM 60M NPN/PNP

0

ZT1-E3215

ZT1-E3215

SICK

SENSOR PROXIMITY 50MM NPN

0

GRSE18-N1147

GRSE18-N1147

SICK

SENSOR THROUGH-BEAM 15M NPN

0

HTB18-M1G2AAD02

HTB18-M1G2AAD02

SICK

SENSOR PROXIMITY 50MM DO

0

EL3-N2628

EL3-N2628

SICK

SENSOR RETROREFL 10MM NPN DO/LO

0

WTB4-3P3261S27

WTB4-3P3261S27

SICK

SENSOR PROXIMITY 150MM PNP

0

ZT2-E5228

ZT2-E5228

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WT2F-E150

WT2F-E150

SICK

SENSOR PROXIMITY 34MM NPN

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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