Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
ET3-E4238

ET3-E4238

SICK

SENSOR PROXIMITY 100MM NPN

0

HL18-P3A3BH

HL18-P3A3BH

SICK

SENSOR RETROREFLECTIVE 6.5M PNP

0

KTL5W-2N16

KTL5W-2N16

SICK

SENSOR NPN LO/DO FIBER

0

ZT2-E4238

ZT2-E4238

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

GRL18S-F235W

GRL18S-F235W

SICK

SENSOR RETROREFLECTIVE 7.2M PNP

0

KT5G-2P2351

KT5G-2P2351

SICK

SENSOR CONT 40MM PNP

0

WT2F-P250

WT2F-P250

SICK

SENSOR PROXIMITY 34MM PNP

0

ET3-P3238

ET3-P3238

SICK

SENSOR PROXIMITY 50MM PNP

0

ET3-N5228

ET3-N5228

SICK

SENSOR PROXIMITY 155MM NPN

0

ZT2-F5228

ZT2-F5228

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WSE27-3P2450

WSE27-3P2450

SICK

SENSOR THROUGH-BEAM 35M PNP

0

GL10G-N1252

GL10G-N1252

SICK

SENSOR RETROREFLECTIVE 12M NPN

0

WL4-3P3430

WL4-3P3430

SICK

SENSOR RETROREFLECTIVE 4.5M PNP

0

ZL2-P2425

ZL2-P2425

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

ET4-P5228

ET4-P5228

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WTB12C-3P2432A70

WTB12C-3P2432A70

SICK

SENSOR PROXIMITY 350MM PNP

0

WTB4S-3P3264H

WTB4S-3P3264H

SICK

SENSOR PROXIMITY 500MM PNP

0

WTB4S-3W1331

WTB4S-3W1331

SICK

SENSOR PROXIMTY 120MM NPN 2M CBL

0

WL9M4L-3P2432

WL9M4L-3P2432

SICK

SENSOR RETROREFLECTIVE 12M PNP

0

WSE4S-3P2430V

WSE4S-3P2430V

SICK

SENSOR THROUGH-BEAM 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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