Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
WLG4-3P2132

WLG4-3P2132

SICK

SENSOR RETROREFL 10MM NPN DO/LO

0

HSE18-F4A2BG

HSE18-F4A2BG

SICK

SENSOR THROUGH-BEAM 25M LO/DO

0

WLG4-3F3234S05

WLG4-3F3234S05

SICK

SENSOR RETROREFLECTIVE 4M PNP

0

WLG4SC-3P2232A91

WLG4SC-3P2232A91

SICK

SENSOR RETROREFLECTIVE 5M PNP

0

WTB4S-3P2205VS01

WTB4S-3P2205VS01

SICK

SENSOR PROXIMITY 280MM PNP

0

WL12C-3P2432A71

WL12C-3P2432A71

SICK

SENSOR RETROREFLECTIVE 5M PNP

0

HSE18-F4A1BG

HSE18-F4A1BG

SICK

SENSOR THROUGH-BEAM 20M LO/DO

0

WTB12-3P1131

WTB12-3P1131

SICK

SENSOR PROXIMITY 350MM PNP

0

GSE6-P6111

GSE6-P6111

SICK

SENSOR THROUGH-BEAM 15M PNP

0

GSE6-N1121

GSE6-N1121

SICK

SENSOR THROUGH-BEAM 14.5M NPN

0

HL18-P4A3AD

HL18-P4A3AD

SICK

SENSOR RETROREFLECTIVE 6.5M PNP

0

GSE6-N6311

GSE6-N6311

SICK

SENSOR THROUGH-BEAM 15M NPN

0

WTB9M4L-3P2261

WTB9M4L-3P2261

SICK

SENSOR PROXIMITY 10MM NPN DO/LO

0

HTB18-P1G2AB

HTB18-P1G2AB

SICK

SENSOR PROXIMITY 300MM PNP

0

ZL1-N2276

ZL1-N2276

SICK

SENSOR RETROREFLECTIVE 4.8M NPN

0

WLG4S-3V2232V

WLG4S-3V2232V

SICK

SENSOR RETROREFLECTIVE 3M PNP

0

ZT1-N3221

ZT1-N3221

SICK

SENSOR PROXIMITY 50MM NPN

0

WTB9-3P1111

WTB9-3P1111

SICK

SENSOR PROXIMITY 500MM PNP

0

WTB4SL-3P1162V

WTB4SL-3P1162V

SICK

SENSOR PROXIMITY 300MM PNP

0

WTB4S-3P3232V

WTB4S-3P3232V

SICK

SENSOR PROXIMITY 120MM 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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