Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
WL4S-3V2232

WL4S-3V2232

SICK

SENSOR RETROREFLECTIVE 5M PNP

0

GL6-F7511

GL6-F7511

SICK

SENSOR RETROREFLECTIVE 6MM PNP

0

WSE4S-3E3130H

WSE4S-3E3130H

SICK

SENSOR THROUGH-BEAM 4.5M NPN

0

KT5G-2P1321

KT5G-2P1321

SICK

SENSOR CONTRAST 40MM PNP LO/DO

0

WTB4-3E2161

WTB4-3E2161

SICK

SENSOR PROXIMITY 150MM NPN

0

WTB4-3P3261

WTB4-3P3261

SICK

SENSOR PROXIMITY 150MM PNP

0

GRL18SG-F233Z

GRL18SG-F233Z

SICK

SENSOR RETROREFLECTIVE 7.2M PNP

0

GTE10-R3811

GTE10-R3811

SICK

SENSOR PROXIMITY 1.3M RELAY

0

WL4S-3P5230H

WL4S-3P5230H

SICK

SENSOR RETROREFLECTIVE 4M PNP

0

ZT2-F3231

ZT2-F3231

SICK

SENSOR PROXIMITY 50MM PNP

0

WLG4-3K2232

WLG4-3K2232

SICK

PNP LO/DO M8 4-PIN PLUG

0

WTB4-3F3161

WTB4-3F3161

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

GTE10-N1211

GTE10-N1211

SICK

SENSOR PROXIMITY 1.3M NPN

0

ET3-N4238

ET3-N4238

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

ZT1-F5215

ZT1-F5215

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WTB4S-3P3462

WTB4S-3P3462

SICK

SENSOR PROXIMITY 180MM PNP

0

KT5W-2P1216

KT5W-2P1216

SICK

SENSOR 20MM PNP STATIC TEACH ON

0

GSE10-R3712

GSE10-R3712

SICK

SENSOR THROUGH-BEAM 35M RELAY

0

GRTE18S-N1147

GRTE18S-N1147

SICK

SENSOR PROXIMITY 550MM NPN

0

WL4-3N1330

WL4-3N1330

SICK

SENSOR RETROREFLECTIVE 4.5M 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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