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Measuring light curtains are designed for dimensional measurement and object profiling, while safety light curtains are designed to protect personnel by stopping hazardous machinery when a person enters a dangerous area. They serve fundamentally different purposes. Key Differences FeatureMeasuring Light CurtainSafety Light Curtain Primary PurposeDimension measurement, position detection, profilingPersonnel safety, machine stop on intrusion Output TypeRS485/RS232, 4-20mA, 1-10V analog or digital measurement dataOSSD safety outputs (dual-channel), relay Response TimeTypically 5-50ms depending on scan rateTypically less than 20ms for safety stop ResolutionHigh resolution (2.5mm, 10mm, 20mm beam spacing)Finger (14mm), hand (30mm), body (50mm+) Safety CertificationNot required (measurement device)Required (SIL3, PL e, Type 4) Output DataPrecise measurement data for object size/positionBinary ON/OFF state (safe/unsafe) When to Use Which Use Measuring Light Curtain When You need to measure part dimensions, detect object position, count items, profile shapes, or perform quality control inspections on a production line. Use Safety Light Curtain When You need to protect operators from hazardous machine motion, create a safety perimeter, or comply with machinery safety regulations (ISO 13849, IEC 62061). Case Example Scenario: An automotive parts assembly line requires both dimensional inspection and operator protection. Solution: Install DADISICK DK-QL measuring light curtains (10mm beam spacing) at the inspection station to measure part dimensions. Separately install DADISICK safety light curtains around the robot cell to ensure operator safety. The two systems work independently — one measures, the other protects. Explore DADISICK Measuring Light Curtains Related Questions What is a Measuring Light Curtain and how does it work? What are the common applications of measuring light curtains? How to choose the right measuring light curtain? .faq-answer-h5p2zm { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-h5p2zm h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-h5p2zm h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-h5p2zm h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-h5p2zm p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-h5p2zm .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-h5p2zm .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-h5p2zm .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-h5p2zm .highlight-box i { color: #00a0e9; 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Measuring light curtains are primarily classified by beam spacing (resolution), detection distance, and output type. The beam spacing determines the smallest object size the system can detect — the smaller the spacing, the higher the precision. Classification by Beam Spacing TypeBeam SpacingBest ForResolution High Precision2.5mmSmall parts, fine measurement~5mm object Standard Precision10mmGeneral dimension measurement~20mm object Coarse Measurement20mmLarge object detection~40mm object DADISICK DK-QL Series Options DK-QL32-2.5 2.5mm beam spacing, 32 optical axes, 77.5mm protection height, 0.3-1M detection. Ideal for small object measurement. DK-QL Series 10mm 10mm beam spacing, 8-200 optical axes, 70-1990mm protection height, 0.3-6M detection. The most versatile range. DK-QL Series 20mm 20mm beam spacing, up to 138 optical axes, 2740mm max protection height. For large-area measurement. All DADISICK DK-QL models support RS485/RS232, 4-20mA, and 1-10V output modes, and come with TUV, UL, CE, RoSH, and GB certifications. The M12 connector ensures reliable industrial connectivity. Selection Recommendation For precision measurement of small components (e.g., PCB height, connector pins) → choose 2.5mm beam spacing. For general industrial measurement (e.g., package dimensions, part sorting) → choose 10mm beam spacing. For large object presence and profiling (e.g., vehicle dimensions, pallet detection) → choose 20mm beam spacing. Browse DADISICK Measuring Light Curtains Related Questions What is beam spacing in measuring light curtains and why does it matter? What is the difference between 2.5mm and 10mm beam spacing? How to choose the right measuring light curtain for your application? .faq-answer-mna0mt { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-mna0mt h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-mna0mt h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-mna0mt h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-mna0mt p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-mna0mt .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-mna0mt .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-mna0mt .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-mna0mt .highlight-box i { color: #00a0e9; margin-right: 8px; } .faq-answer-mna0mt ul, .faq-answer-mna0mt ol { font-size: 16px; line-height: 1.7; padding-left: 24px; margin-bottom: 16px; } .faq-answer-mna0mt li { margin-bottom: 8px; } .faq-answer-mna0mt .grid-2 { display: flex; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-mna0mt .grid-2 div { flex: 1; min-width: 280px; } .faq-answer-mna0mt .card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 20px; transition: all 0.3s ease; } .faq-answer-mna0mt .card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); } .faq-answer-mna0mt .card h4 { margin: 0 0 8px; } .faq-answer-mna0mt .card p { margin: 0; font-size: 14px; } .faq-answer-mna0mt .case-box { background: #e8f5e9; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-mna0mt .data-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; } .faq-answer-mna0mt .data-item { flex: 1; min-width: 140px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-mna0mt .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-mna0mt .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-mna0mt .data-item .label { font-size: 13px; color: #666; } .faq-answer-mna0mt .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-mna0mt .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-mna0mt .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-mna0mt .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-mna0mt .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); } .faq-answer-mna0mt .badge { display: inline-block; background: #00a0e9; color: #fff !important; padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; } .faq-answer-mna0mt .cta-link { display: inline-block; color: #00a0e9; font-weight: 600; text-decoration: none; border-bottom: 2px solid #00a0e9; padding-bottom: 2px; transition: all 0.3s ease; } .faq-answer-mna0mt .cta-link:hover { color: #005a99 !important; border-color: #005a99; } .faq-answer-mna0mt .cta-link i { margin-right: 6px; } .faq-answer-mna0mt a { color: #00a0e9 !important; } .faq-answer-mna0mt .related-q { background: #fafafa; border-radius: 8px; padding: 20px; margin-top: 24px; } .faq-answer-mna0mt .related-q ul { margin: 0; } .faq-answer-mna0mt .step-card { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; transition: all 0.3s ease; } .faq-answer-mna0mt .step-card:hover { transform: translateX(4px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-mna0mt .step-num { width: 36px; height: 36px; background: #00a0e9; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; } .faq-answer-mna0mt .step-content { flex: 1; } .faq-answer-mna0mt .step-content h4 { margin: 0 0 4px; } .faq-answer-mna0mt .step-content p { margin: 0; font-size: 14px; } .faq-answer-mna0mt .comparison-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; border-radius: 8px; overflow: hidden; } .faq-answer-mna0mt .comparison-table th { background: #00a0e9; color: #fff; padding: 12px 16px; text-align: left; font-size: 15px; } .faq-answer-mna0mt .comparison-table td { padding: 12px 16px; border-bottom: 1px solid #e0e0e0; font-size: 15px; } .faq-answer-mna0mt .comparison-table tr:last-child td { border-bottom: none; } .faq-answer-mna0mt .comparison-table tr:hover { background: #f0f8ff; } .faq-answer-mna0mt .warning-box { background: #fff3e0; border-left: 4px solid #ff9800; 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A measuring light curtain is an array of parallel infrared light beams emitted from a transmitter to a receiver. When an object enters the beam field, the system instantly detects which beams are blocked and calculates the object's size, position, and profile with high precision. How It Works The system operates on a through-beam photoelectric principle. The emitter contains multiple infrared LEDs arranged at fixed intervals (beam spacing), each projecting a beam to a corresponding phototransistor on the receiver side. When all beams reach the receiver uninterrupted, the system registers "no object." When an object interrupts specific beams, the controller processes the beam pattern to determine: Object width and height — calculated from which beams are blocked Object position — determined by the location of interrupted beams along the array Object profile — mapped by scanning the beam interruption pattern over time Key Specifications 2.5-20mmBeam Spacing 0.3-6MDetection Distance 70-2740mmProtection Height 8-200Optical Axes DADISICK DK-QL Series DADISICK DK-QL series measuring light curtains offer beam spacing options of 2.5mm, 10mm, and 20mm, with detection distances up to 6 meters and protection heights from 77.5mm to 2740mm. All models feature RS485/RS232 communication, 4-20mA analog output, and 1-10V voltage output options, with TUV, UL, CE, RoSH, and GB certifications. View DK-QL Series Products Related Questions What are the different types of measuring light curtains available? How does a measuring light curtain differ from a safety light curtain? How to choose the right measuring light curtain for your application? .faq-answer-ovyxk5 { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-ovyxk5 h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-ovyxk5 h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-ovyxk5 h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-ovyxk5 p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-ovyxk5 .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-ovyxk5 .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-ovyxk5 .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-ovyxk5 .highlight-box i { color: #00a0e9; margin-right: 8px; } .faq-answer-ovyxk5 ul, .faq-answer-ovyxk5 ol { font-size: 16px; line-height: 1.7; padding-left: 24px; margin-bottom: 16px; } .faq-answer-ovyxk5 li { margin-bottom: 8px; } .faq-answer-ovyxk5 .grid-2 { display: flex; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-ovyxk5 .grid-2 div { flex: 1; min-width: 280px; } .faq-answer-ovyxk5 .card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 20px; transition: all 0.3s ease; } .faq-answer-ovyxk5 .card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); } .faq-answer-ovyxk5 .card h4 { margin: 0 0 8px; } .faq-answer-ovyxk5 .card p { margin: 0; font-size: 14px; } .faq-answer-ovyxk5 .case-box { background: #e8f5e9; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-ovyxk5 .data-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; } .faq-answer-ovyxk5 .data-item { flex: 1; min-width: 140px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-ovyxk5 .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-ovyxk5 .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-ovyxk5 .data-item .label { font-size: 13px; color: #666; } .faq-answer-ovyxk5 .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-ovyxk5 .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-ovyxk5 .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-ovyxk5 .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-ovyxk5 .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); } .faq-answer-ovyxk5 .badge { display: inline-block; background: #00a0e9; color: #fff !important; padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; } .faq-answer-ovyxk5 .cta-link { display: inline-block; color: #00a0e9; font-weight: 600; text-decoration: none; border-bottom: 2px solid #00a0e9; padding-bottom: 2px; transition: all 0.3s ease; } .faq-answer-ovyxk5 .cta-link:hover { color: #005a99 !important; border-color: #005a99; } .faq-answer-ovyxk5 .cta-link i { margin-right: 6px; } .faq-answer-ovyxk5 a { color: #00a0e9 !important; } .faq-answer-ovyxk5 .related-q { background: #fafafa; border-radius: 8px; padding: 20px; margin-top: 24px; } .faq-answer-ovyxk5 .related-q ul { margin: 0; } .faq-answer-ovyxk5 .step-card { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; transition: all 0.3s ease; } .faq-answer-ovyxk5 .step-card:hover { transform: translateX(4px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-ovyxk5 .step-num { width: 36px; height: 36px; background: #00a0e9; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; } .faq-answer-ovyxk5 .step-content { flex: 1; } .faq-answer-ovyxk5 .step-content h4 { margin: 0 0 4px; } .faq-answer-ovyxk5 .step-content p { margin: 0; font-size: 14px; } .faq-answer-ovyxk5 .comparison-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; border-radius: 8px; overflow: hidden; } .faq-answer-ovyxk5 .comparison-table th { background: #00a0e9; color: #fff; padding: 12px 16px; text-align: left; font-size: 15px; } .faq-answer-ovyxk5 .comparison-table td { padding: 12px 16px; border-bottom: 1px solid #e0e0e0; font-size: 15px; } .faq-answer-ovyxk5 .comparison-table tr:last-child td { border-bottom: none; } .faq-answer-ovyxk5 .comparison-table tr:hover { background: #f0f8ff; } .faq-answer-ovyxk5 .warning-box { background: #fff3e0; border-left: 4px solid #ff9800; border-radius: 8px; padding: 16px; margin-bottom: 24px; }

DADISICK DK-QL measuring light curtains come factory-packaged with: 1 Receiver and 1 Emitter, mounting accessories, signal cables, and an M12 connector. All models include the necessary hardware for standard installation. Included Components ComponentQuantityDescription Emitter Unit1Infrared LED array with housing Receiver Unit1Phototransistor array with housing Signal Cable1 setShielded cable with M12 connector Mounting Brackets2 setsAdjustable mounting hardware Documentation1 setManual, wiring diagram, certificate View Product Details .faq-answer-0cr0kb { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-0cr0kb h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-0cr0kb h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-0cr0kb h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-0cr0kb p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-0cr0kb .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-0cr0kb .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-0cr0kb .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-0cr0kb .highlight-box i { color: #00a0e9; margin-right: 8px; } .faq-answer-0cr0kb ul, .faq-answer-0cr0kb ol { font-size: 16px; line-height: 1.7; padding-left: 24px; margin-bottom: 16px; } .faq-answer-0cr0kb li { margin-bottom: 8px; } .faq-answer-0cr0kb .grid-2 { display: flex; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-0cr0kb .grid-2 div { flex: 1; min-width: 280px; } .faq-answer-0cr0kb .card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 20px; transition: all 0.3s ease; } .faq-answer-0cr0kb .card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); } .faq-answer-0cr0kb .card h4 { margin: 0 0 8px; } .faq-answer-0cr0kb .card p { margin: 0; font-size: 14px; } .faq-answer-0cr0kb .case-box { background: #e8f5e9; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-0cr0kb .data-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; } .faq-answer-0cr0kb .data-item { flex: 1; min-width: 140px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-0cr0kb .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-0cr0kb .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-0cr0kb .data-item .label { font-size: 13px; color: #666; } .faq-answer-0cr0kb .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-0cr0kb .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-0cr0kb .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-0cr0kb .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-0cr0kb .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); } .faq-answer-0cr0kb .badge { display: inline-block; background: #00a0e9; color: #fff !important; padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; } .faq-answer-0cr0kb .cta-link { display: inline-block; color: #00a0e9; font-weight: 600; text-decoration: none; border-bottom: 2px solid #00a0e9; padding-bottom: 2px; transition: all 0.3s ease; } .faq-answer-0cr0kb .cta-link:hover { color: #005a99 !important; border-color: #005a99; } .faq-answer-0cr0kb .cta-link i { margin-right: 6px; } .faq-answer-0cr0kb a { color: #00a0e9 !important; } .faq-answer-0cr0kb .related-q { background: #fafafa; border-radius: 8px; padding: 20px; margin-top: 24px; } .faq-answer-0cr0kb .related-q ul { margin: 0; } .faq-answer-0cr0kb .step-card { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; transition: all 0.3s ease; } .faq-answer-0cr0kb .step-card:hover { transform: translateX(4px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-0cr0kb .step-num { width: 36px; height: 36px; background: #00a0e9; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; } .faq-answer-0cr0kb .step-content { flex: 1; } .faq-answer-0cr0kb .step-content h4 { margin: 0 0 4px; } .faq-answer-0cr0kb .step-content p { margin: 0; font-size: 14px; } .faq-answer-0cr0kb .comparison-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; border-radius: 8px; overflow: hidden; } .faq-answer-0cr0kb .comparison-table th { background: #00a0e9; color: #fff; padding: 12px 16px; text-align: left; font-size: 15px; } .faq-answer-0cr0kb .comparison-table td { padding: 12px 16px; border-bottom: 1px solid #e0e0e0; font-size: 15px; } .faq-answer-0cr0kb .comparison-table tr:last-child td { border-bottom: none; } .faq-answer-0cr0kb .comparison-table tr:hover { background: #f0f8ff; } .faq-answer-0cr0kb .warning-box { background: #fff3e0; border-left: 4px solid #ff9800; border-radius: 8px; padding: 16px; margin-bottom: 24px; }

The maximum protection height across the DADISICK DK-QL measuring light curtain lineup is 2740mm (DK-QL138-20-2740 with 20mm beam spacing, 138 optical axes). The tallest 10mm spacing model is the DK-QL200-10-1990 at 1990mm with 200 optical axes. Maximum Heights by Beam Spacing Beam SpacingMax ModelOptical AxesMax Protection HeightDetection Distance 2.5mmDK-QL32-2.5-77.53277.5mm0.3-1M 10mmDK-QL200-10-19902001990mm0.3-6M 20mmDK-QL138-20-27401382740mm0.3-6M Browse All Protection Heights .faq-answer-mccugj { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-mccugj h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-mccugj h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-mccugj h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-mccugj p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-mccugj .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-mccugj .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-mccugj .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-mccugj .highlight-box i { color: #00a0e9; margin-right: 8px; } .faq-answer-mccugj ul, .faq-answer-mccugj ol { font-size: 16px; line-height: 1.7; padding-left: 24px; margin-bottom: 16px; } .faq-answer-mccugj li { margin-bottom: 8px; } .faq-answer-mccugj .grid-2 { display: flex; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-mccugj .grid-2 div { flex: 1; min-width: 280px; } .faq-answer-mccugj .card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 20px; transition: all 0.3s ease; } .faq-answer-mccugj .card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); } .faq-answer-mccugj .card h4 { margin: 0 0 8px; } .faq-answer-mccugj .card p { margin: 0; font-size: 14px; } .faq-answer-mccugj .case-box { background: #e8f5e9; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-mccugj .data-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; } .faq-answer-mccugj .data-item { flex: 1; min-width: 140px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-mccugj .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-mccugj .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-mccugj .data-item .label { font-size: 13px; color: #666; } .faq-answer-mccugj .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-mccugj .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-mccugj .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-mccugj .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-mccugj .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); } .faq-answer-mccugj .badge { display: inline-block; background: #00a0e9; color: #fff !important; padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; } .faq-answer-mccugj .cta-link { display: inline-block; color: #00a0e9; font-weight: 600; text-decoration: none; border-bottom: 2px solid #00a0e9; padding-bottom: 2px; transition: all 0.3s ease; } .faq-answer-mccugj .cta-link:hover { color: #005a99 !important; border-color: #005a99; } .faq-answer-mccugj .cta-link i { margin-right: 6px; } .faq-answer-mccugj a { color: #00a0e9 !important; } .faq-answer-mccugj .related-q { background: #fafafa; border-radius: 8px; padding: 20px; margin-top: 24px; } .faq-answer-mccugj .related-q ul { margin: 0; } .faq-answer-mccugj .step-card { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; transition: all 0.3s ease; } .faq-answer-mccugj .step-card:hover { transform: translateX(4px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-mccugj .step-num { width: 36px; height: 36px; background: #00a0e9; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; } .faq-answer-mccugj .step-content { flex: 1; } .faq-answer-mccugj .step-content h4 { margin: 0 0 4px; } .faq-answer-mccugj .step-content p { margin: 0; font-size: 14px; } .faq-answer-mccugj .comparison-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; border-radius: 8px; overflow: hidden; } .faq-answer-mccugj .comparison-table th { background: #00a0e9; color: #fff; padding: 12px 16px; text-align: left; font-size: 15px; } .faq-answer-mccugj .comparison-table td { padding: 12px 16px; border-bottom: 1px solid #e0e0e0; font-size: 15px; } .faq-answer-mccugj .comparison-table tr:last-child td { border-bottom: none; } .faq-answer-mccugj .comparison-table tr:hover { background: #f0f8ff; } .faq-answer-mccugj .warning-box { background: #fff3e0; border-left: 4px solid #ff9800; border-radius: 8px; padding: 16px; margin-bottom: 24px; }

Yes, you can interface DADISICK DK-QL measuring light curtains with Arduino or Raspberry Pi using the RS485 output. For Arduino, connect via an RS485-to-TTL module. For Raspberry Pi, use a USB-to-RS485 adapter. Both read measurement data through serial communication. Quick Start Steps 1Arduino: RS485 to TTLConnect MAX485 module: DI to TX, RO to RX, DE/RE to digital pin. Power from 5V. 2Raspberry Pi: USB-RS485Use USB-to-RS485 adapter. Connect A+/B- terminals. Install pyserial library. 3Read DataConfigure 9600 baud, 8N1. Send read command to DADISICK device address. Parse received measurement bytes. This is ideal for prototyping, education, or custom measurement applications. For production systems, DADISICK recommends PLC-based integration for industrial reliability. .faq-answer-lk2suj { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-lk2suj h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-lk2suj h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-lk2suj h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-lk2suj p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-lk2suj .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-lk2suj .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-lk2suj .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-lk2suj .highlight-box i { color: #00a0e9; margin-right: 8px; } .faq-answer-lk2suj ul, .faq-answer-lk2suj ol { font-size: 16px; line-height: 1.7; padding-left: 24px; margin-bottom: 16px; } .faq-answer-lk2suj li { margin-bottom: 8px; } .faq-answer-lk2suj .grid-2 { display: flex; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-lk2suj .grid-2 div { flex: 1; min-width: 280px; } .faq-answer-lk2suj .card { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 20px; transition: all 0.3s ease; } .faq-answer-lk2suj .card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); } .faq-answer-lk2suj .card h4 { margin: 0 0 8px; } .faq-answer-lk2suj .card p { margin: 0; font-size: 14px; } .faq-answer-lk2suj .case-box { background: #e8f5e9; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-lk2suj .data-row { display: flex; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; } .faq-answer-lk2suj .data-item { flex: 1; min-width: 140px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-lk2suj .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-lk2suj .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-lk2suj .data-item .label { font-size: 13px; color: #666; } .faq-answer-lk2suj .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-lk2suj .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-lk2suj .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-lk2suj .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-lk2suj .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); } .faq-answer-lk2suj .badge { display: inline-block; background: #00a0e9; color: #fff !important; padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; } .faq-answer-lk2suj .cta-link { display: inline-block; color: #00a0e9; font-weight: 600; text-decoration: none; border-bottom: 2px solid #00a0e9; padding-bottom: 2px; transition: all 0.3s ease; } .faq-answer-lk2suj .cta-link:hover { color: #005a99 !important; border-color: #005a99; } .faq-answer-lk2suj .cta-link i { margin-right: 6px; } .faq-answer-lk2suj a { color: #00a0e9 !important; } .faq-answer-lk2suj .related-q { background: #fafafa; border-radius: 8px; padding: 20px; margin-top: 24px; } .faq-answer-lk2suj .related-q ul { margin: 0; } .faq-answer-lk2suj .step-card { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 16px; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 16px; transition: all 0.3s ease; } .faq-answer-lk2suj .step-card:hover { transform: translateX(4px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-lk2suj .step-num { width: 36px; height: 36px; background: #00a0e9; color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 16px; flex-shrink: 0; } .faq-answer-lk2suj .step-content { flex: 1; } .faq-answer-lk2suj .step-content h4 { margin: 0 0 4px; } .faq-answer-lk2suj .step-content p { margin: 0; font-size: 14px; } .faq-answer-lk2suj .comparison-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; border-radius: 8px; overflow: hidden; } .faq-answer-lk2suj .comparison-table th { background: #00a0e9; color: #fff; padding: 12px 16px; text-align: left; font-size: 15px; } .faq-answer-lk2suj .comparison-table td { padding: 12px 16px; border-bottom: 1px solid #e0e0e0; font-size: 15px; } .faq-answer-lk2suj .comparison-table tr:last-child td { border-bottom: none; } .faq-answer-lk2suj .comparison-table tr:hover { background: #f0f8ff; } .faq-answer-lk2suj .warning-box { background: #fff3e0; border-left: 4px solid #ff9800; border-radius: 8px; padding: 16px; margin-bottom: 24px; }

Measuring light curtains serve a wide range of industries where non-contact dimensional measurement, position detection, and quality control are essential. DADISICK DK-QL series is deployed across 10+ major industrial sectors worldwide. Industry Applications IndustryCommon ApplicationRecommended DK-QL AutomotivePart inspection, assembly verificationDK-QL 10mm Series ElectronicsPCB measurement, component inspectionDK-QL32-2.5-77.5 Logistics & WarehousingPackage dimensioning, sortingDK-QL 10/20mm Series Food & BeverageFill level, package integrityDK-QL 10mm Series PharmaceuticalBlister pack, vial inspectionDK-QL32-2.5-77.5 DADISICK's multi-certification suite (TUV, UL, CE, RoSH, GB) means DK-QL measuring light curtains meet regulatory requirements across all major global markets and industries. Find Your Industry Solution .faq-answer-kbxsn5 { font-family: 'Segoe UI', Roboto, system-ui, sans-serif; color: #333; } .faq-answer-kbxsn5 h2 { font-size: 32px !important; font-weight: 700 !important; line-height: 1.3 !important; color: #00a0e9 !important; } .faq-answer-kbxsn5 h3 { font-size: 22px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #00a0e9 !important; } .faq-answer-kbxsn5 h4 { font-size: 18px !important; font-weight: 600 !important; line-height: 1.4 !important; color: #333 !important; } .faq-answer-kbxsn5 p { font-size: 16px; line-height: 1.7; margin: 0 0 16px; } .faq-answer-kbxsn5 .answer-card { background: #f0f8ff; border-left: 4px solid #00a0e9; padding: 24px; border-radius: 8px; margin-bottom: 32px; } .faq-answer-kbxsn5 .answer-card p { margin: 0; font-size: 18px; line-height: 1.6; } .faq-answer-kbxsn5 .highlight-box { background: #f5f5f5; border-radius: 8px; padding: 20px; margin-bottom: 24px; } .faq-answer-kbxsn5 .highlight-box i { color: #00a0e9; 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border-radius: 8px; padding: 16px; text-align: center; transition: all 0.3s ease; } .faq-answer-kbxsn5 .data-item:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); } .faq-answer-kbxsn5 .data-item .num { font-size: 28px; font-weight: 700; color: #00a0e9; display: block; } .faq-answer-kbxsn5 .data-item .label { font-size: 13px; color: #666; } .faq-answer-kbxsn5 .img-row { display: flex; gap: 16px; margin-bottom: 32px; flex-wrap: wrap; } .faq-answer-kbxsn5 .img-row img { flex: 1; min-width: 200px; height: 220px; object-fit: cover; border-radius: 8px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-kbxsn5 .img-row img:hover { transform: scale(1.02); box-shadow: 0 8px 24px rgba(0,0,0,0.15); } .faq-answer-kbxsn5 .full-img { width: 100%; height: 300px; object-fit: cover; border-radius: 8px; margin-bottom: 24px; transition: transform 0.3s ease, box-shadow 0.3s ease; } .faq-answer-kbxsn5 .full-img:hover { transform: scale(1.01); box-shadow: 0 8px 24px rgba(0,0,0,0.12); 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Regular maintenance of DADISICK DK-QL measuring light curtains involves cleaning the optical windows with a lint-free cloth and isopropyl alcohol, checking M12 connector integrity, verifying alignment, and performing weekly functional tests with reference objects. Maintenance Schedule DailyVisual check for dust, debris WeeklyClean optical surfaces MonthlyFull alignment check QuarterlyCable & connector inspection All DADISICK DK-QL series units are designed for minimal maintenance in industrial environments. The rugged aluminum housing and sealed electronics ensure long-term reliability with proper care. 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You can purchase DADISICK measuring light curtains directly from our official website at dadisick.com, submit a customized inquiry through the inquiry form, or contact our sales team for bulk orders and distributor partnerships. Purchase Options ChannelBest ForHow To Order Official WebsiteStandard models, small quantitiesBrowse product page and submit inquiry Custom InquiryBulk orders, custom specificationsUse Send Inquiry form with quantity and specs Distributor NetworkLocal support and stockContact sales for regional distributor list DADISICK offers competitive pricing, factory-direct support, and fast shipping for all DK-QL measuring light curtain models. All orders include standard warranty and technical documentation. 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Choose by your control system: RS485 for networked multi-sensor systems, RS232 for direct PC connection, 4-20mA for PLC analog input modules, 1-10V for voltage-based controllers. DADISICK DK-QL supports all four in a single product line. Selection Matrix Your SystemRecommended OutputWhy PLC with analog inputs4-20mASimplest wiring, no protocol needed Multi-sensor factory networkRS485Multi-drop, long distance, noise immune PC-based data acquisitionRS232Direct serial connection, standard protocol Voltage-input controller1-10VSimple scaling, easy troubleshooting DADISICK DK-QL measuring light curtains provide all four output options, giving you maximum flexibility for system integration across different control platforms. 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Follow this systematic approach: Check power LED, verify alignment, clean optics, inspect cables, test individual beams, and verify communication parameters. Most issues are resolved by cleaning or realignment. Troubleshooting Checklist 1Check PowerVerify the power LED on both emitter and receiver. DADISICK DK-QL units have visible status indicators. No LED = no power — check 24VDC supply and wiring. 2Inspect AlignmentCheck if the emitter and receiver are parallel and facing each other. Even 1-2 degree misalignment can cause intermittent operation. 3Clean Optical SurfacesDust, oil, or debris on the emitter or receiver windows is the most common cause of reduced performance. Clean with a soft, lint-free cloth and isopropyl alcohol. 4Check Cables and ConnectorsVerify the M12 connector is securely fastened. Check for damaged cables, bent pins, or corrosion. 5Test CommunicationUse a PC with serial terminal software to verify RS485/RS232 communication. Check baud rate, data bits, and device address settings. If issues persist, contact DADISICK technical support for expert assistance. Do not disassemble the unit — it contains no user-serviceable internal components. 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DADISICK DK-QL measuring light curtains offer two detection distance ranges depending on the beam spacing: 0.3-1 meter for high-precision 2.5mm spacing models, and 0.3-6 meters for standard 10mm and 20mm spacing models. Detection Distance by Model Model SeriesBeam SpacingDetection DistanceBest For DK-QL32-2.52.5mm0.3 - 1 meterClose-range precision measurement DK-QL Series (10mm)10mm0.3 - 6 metersGeneral industrial measurement DK-QL Series (20mm)20mm0.3 - 6 metersLarge object detection Factors Affecting Detection Distance Ambient LightStrong ambient light (direct sunlight, welding arcs) can reduce effective detection distance. DADISICK DK-QL models include optical filtering to mitigate this. Environmental ConditionsDust, fog, and humidity can scatter infrared beams, potentially reducing effective range. Regular cleaning of optical surfaces is recommended. Alignment QualityPrecise alignment between emitter and receiver is critical for achieving maximum detection distance. Even small misalignment reduces effective range. Case Example: A logistics company uses DADISICK DK-QL200-10-1990 (10mm spacing, 0.3-6M range) to measure package dimensions on a conveyor. The emitter and receiver are mounted 4 meters apart, well within the 6-meter maximum. The system measures packages up to 1990mm height with ±10mm accuracy. View DADISICK DK-QL Specifications Related Questions What is the maximum protection height of DADISICK light curtains? How to choose the right measuring light curtain? 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A:Yes, DADISICK sensors support localization with multi-language interfaces, various voltage standards, and regional certifications.

A:Yes, DADISICK laser sensors are ideal for PCB inspection and precise measurement of small electronic components.