Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
WL4S-3F3130S04

WL4S-3F3130S04

SICK

SENSOR RETROREFLECTIVE 4M PNP

0

HTB18-N4A2BAD02

HTB18-N4A2BAD02

SICK

SENSOR PROXIMITY 50MM NPN

0

EL3-P2828

EL3-P2828

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

WSE4S-3E1330

WSE4S-3E1330

SICK

SENSOR THROUGH-BEAM 5M NPN

0

WTF4S-3P3231S08

WTF4S-3P3231S08

SICK

SENSOR PROXIMITY 100MM PNP

0

WTB4S-3P3264

WTB4S-3P3264

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

WTB4S-3P2234VS10

WTB4S-3P2234VS10

SICK

SENSOR PROXIMITY 120MM PNP

0

WL4S-3E2130

WL4S-3E2130

SICK

SENSOR RETROREFLECTIVE 4M NPN

0

ZT1-E4215

ZT1-E4215

SICK

SENSOR PROXIMITY 100MM NPN

0

GRSE18S-P233Y

GRSE18S-P233Y

SICK

SENSOR THROUGH-BEAM 15M PNP

0

KT5W-2N1213

KT5W-2N1213

SICK

SENSOR 20MM NPN DYN TEACH-IN

0

ZT2-P5231

ZT2-P5231

SICK

SENSOR PROXIMITY 155MM PNP

0

WLL180T-M634S1

WLL180T-M634S1

SICK

PNP LO/DO M8 4-PIN

0

HTE18-P4B2BH

HTE18-P4B2BH

SICK

SENSOR PROXIMITY 600MM PNP

0

HL18G-V1G3BL

HL18G-V1G3BL

SICK

SENSOR RETROREFLECTIVE 3M PNP

0

WTB4S-3P2432V

WTB4S-3P2432V

SICK

SENSOR PROXIMITY 120MM PNP

0

GRL18S-N1351

GRL18S-N1351

SICK

SENSOR RETROREFLECTIVE 7.2M NPN

0

ET3-P4215

ET3-P4215

SICK

SENSOR PROXIMITY 100MM PNP

0

WL9G-3P3432

WL9G-3P3432

SICK

SENSOR RETROREFLECTIVE 5M PNP

0

EL4-P2428

EL4-P2428

SICK

SENSOR RETROREFLECTIVE 4.8M 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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