Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
GRSE18-N1127

GRSE18-N1127

SICK

SENSOR THROUGH-BEAM 15M NPN

0

HTB18L-N2C5BDD02

HTB18L-N2C5BDD02

SICK

SENSOR PROXIMITY 50MM NPN

0

ZT1-N4215

ZT1-N4215

SICK

SENSOR PROXIMITY 100MM NPN DO/LO

0

KT5G-2N1121

KT5G-2N1121

SICK

SENSOR CONTRAST 10MM NPN LO/DO

0

WSE4S-3F2130

WSE4S-3F2130

SICK

SENSOR THROUGH-BEAM 5M PNP

0

HL18G-P1G3BL

HL18G-P1G3BL

SICK

SENSOR RETROREFLECTIVE 3M PNP

0

ET4-E5228

ET4-E5228

SICK

SENSOR PROXIMITY 155MM NPN

0

ET4-F5238

ET4-F5238

SICK

SENSOR PROXIMITY 155MM PNP

0

GRTE18-N2442

GRTE18-N2442

SICK

SENSOR PROXIMITY 550MM NPN

0

ZT2-F4238

ZT2-F4238

SICK

SENSOR PROXIMITY 100MM PNP

0

GRL18S-K2438

GRL18S-K2438

SICK

SENSOR RETROREFLECTIVE 7.2M PNP

0

GRSE18S-P1127

GRSE18S-P1127

SICK

SENSOR THROUGH-BEAM 15M PNP

0

WL4-3P1330

WL4-3P1330

SICK

SENSOR RETROREFLECTIVE 4.5M PNP

0

WTT12L-B3548

WTT12L-B3548

SICK

SENSOR PROXIMITY 1.8M NPN/PNP

0

WTB4-3E1361

WTB4-3E1361

SICK

SENSOR PROXIMITY 150MM NPN

0

HTB18-P4B2BAD02

HTB18-P4B2BAD02

SICK

SENSOR PROXIMITY 50MM PNP

0

ET4-E4238

ET4-E4238

SICK

SENSOR PROXIMITY 100MM NPN

0

HTB18-P3A2BH

HTB18-P3A2BH

SICK

SENSOR PROXIMITY 300MM PNP

0

MHF15-21NG1TSM

MHF15-21NG1TSM

SICK

SENSOR LIQUID NPN LEVEL NO

0

KT5G-2N2351

KT5G-2N2351

SICK

SENSOR CONT 40MM 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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