Garantta Reflex Sensor With Background Suppression adopts triangulation optical principle, designed to eliminate interference from background objects. It delivers stable detection regardless of target colour, solving false‑trigger issues caused by reflective backgrounds. Our GPS‑S18 series is M18 cylindrical housing, widely used for detecting workpieces on complicated production backgrounds. Supports NPN / PNP, NO / NC output, adjustable sensing distance via built‑in potentiometer.
Core Features
• Colour‑independent detection: Stable output for black, white, grey and coloured workpieces; measurement result will not shift due to target reflectivity difference.
• On‑board potentiometer adjustment: Continuously set effective sensing cut‑off distance from 0‑150 mm, easy on‑site commissioning.
• M18 ABS cylindrical housing: Standard thread mounting, fits most automation machine installation holes.
• Built‑in status LED indicator: Visible red LED shows detection status for quick troubleshooting.
• Full circuit protection: Reverse polarity protection, short‑circuit protection and overload protection, prevents damage caused by mis‑wiring or voltage surge.
• IP65 protection grade: Resists dust and liquid splashing for factory‑floor environment; not suitable for continuous water immersion.
• 12‑24 VDC wide operating voltage: Compatible with mainstream industrial DC power supply system.
• Multiple output versions available：NPN‑NO, PNP‑NO.
Model Explanation Example Model
GPS‑S18‑PNP‑NO‑2M
• GPS：Garantta Photoelectric Sensor series
• S18：M18 cylindrical background‑suppression type
• Output：NPN / PNP
• Signal：NO Normally‑Open / NC Normally‑Closed
• 2M：Standard 2‑meter PVC cable
Complete available part‑numbers:GPS‑S18‑NPN‑NO‑2M /GPS‑S18‑PNP‑NO‑2M / Custom M12 4‑pin connector version available upon bulk inquiry.
Application
Automated assembly lines: small‑part presence check, workpiece positioning
CNC machinery: part feed confirmation, component counting
Logistics & warehousing: conveyor‑belt object detection
LED & electronics manufacturing: PCB, plastic component detection
General‑purpose automation equipment: fixture confirmation, material arrival monitoring
FAQ
Q1: What is the difference between Reflex Sensor With Background Suppression and ordinary diffuse photoelectric sensor?
A: Ordinary diffuse‑reflection sensor responds according to light reflection intensity; bright background will cause false trigger. BGS works by triangulation distance judgement. It ignores background objects behind setting distance, stable for mixed‑colour targets and complex installation surroundings.
Q2: Can background‑suppression sensor detect transparent films?
A: For semi‑transparent plastic sheets it works normally. For ultra‑transparent film with transmittance over 95%, performance is not guaranteed. Please run actual on‑site test before bulk installation.
Q3: Can I directly drive solenoid valve with this sensor output?
A: Max load current is 100 mA. Do not directly connect large‑current solenoid valves. Use intermediate relay for heavy‑load control.
Q4: Will strong ambient light trigger false signals?
A: Our optical filter suppresses most ambient‑light interference. Still prevent direct strong sunlight or spotlight aiming at sensor lens.
Q5: Can I custom cable length or switch to M12 connector? What about sample support?
A: OEM & ODM service available for bulk orders. Custom cable length and M12 plug‑in connector can be realised. Samples are supported for customer evaluation test. Please send inquiry for detailed offer.
Q6: IP65 rating, can it work under water‑spray environment?
A: IP65 protects against dust and low‑pressure water splashing. Do NOT keep Reflex Sensor With Background Suppression immersed in liquid. Avoid continuous heavy cutting‑fluid wash‑down.
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