Optical Sensors - Photoelectric, Industrial

Image Part Number Description / PDF Quantity Rfq
HTB18L-B4B5BH

HTB18L-B4B5BH

SICK

SENSOR PROXIMITY 300MM NPN/PNP

0

ZT1-E5221

ZT1-E5221

SICK

SENSOR PROXIMITY 155MM NPN

0

HL18-F4G3BD

HL18-F4G3BD

SICK

SENSOR RETROREFLECTIVE 6.5M

0

WTB4S-3N2162V

WTB4S-3N2162V

SICK

SENSOR PROXIMITY 500MM NPN

0

HTB18-L1G2AG

HTB18-L1G2AG

SICK

SENSOR PROXIMITY 300MM LO

0

HSE18-P4A1BB

HSE18-P4A1BB

SICK

SENSOR THROUGH-BEAM 20M PNP

0

WTB4S-3P3132

WTB4S-3P3132

SICK

SENSOR PROXIMITY 120MM PNP

0

GTE6-P4211

GTE6-P4211

SICK

SENSOR PROXIMITY 300MM PNP

0

WLG4S-3P3232V

WLG4S-3P3232V

SICK

SENSOR RETROREFL 10MM NPN DO/LO

0

GRSE18S-N2447

GRSE18S-N2447

SICK

SENSOR THROUGH-BEAM 15M NPN

0

GRTE18S-E236Z

GRTE18S-E236Z

SICK

SENSOR PROXIMITY 1M NPN

0

ZL1-P2417

ZL1-P2417

SICK

SENSOR RETROREFLECTIVE 4.8M PNP

0

GSE10-N1112

GSE10-N1112

SICK

SENSOR THROUGH-BEAM 40M NPN

0

GL6-N1212

GL6-N1212

SICK

SENSOR RETROREFLECTIVE 6MM NPN

0

GL6-N6212

GL6-N6212

SICK

SENSOR RETROREFLECTIVE 6MM NPN

0

WL4S-3P2430V

WL4S-3P2430V

SICK

SENSOR RETROREFLECTIVE 4M PNP

0

HL18T-P3A3BB

HL18T-P3A3BB

SICK

SENSOR RETROREFLECTIVE 3M PNP

0

GL6-N1111

GL6-N1111

SICK

SENSOR RETROREFLECTIVE 6MM NPN

0

WSE4S-3P5320H

WSE4S-3P5320H

SICK

PNP LO/DO M8 4PIN PGTL

0

ZT2-E2231

ZT2-E2231

SICK

SENSOR PROXIMITY 60MM 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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