Photoelectric Cylindrical sensors FQ Series

Datasensing FQ Series

The FQ Series delivers flexible and high-performance photoelectric detection in a compact M18 cylindrical housing, engineered for broad industrial automation use. With models covering direct diffuse, retro-reflective, polarized and fixed-focus optical principles, the series provides versatile object detection, compact mounting, and industrial-grade durability. 

Design & Functionality

• The series uses a short-body M18 × 1 housing, making it suitable for tight installation spaces while maintaining professional detection performance. 
• Offers a wide range of sensing-principles: examples include diffuse-reflection models with nominal sensing distances up to ~1.2 m, retro-reflective models with ~6 m sensing, fixed-focus or long-range receiver models up to ~20 m. 
• Output type: Complementary NO + NC (both normally open and normally closed) versions available; output type examples: PNP or NPN. 
• Protection: Degree of protection P67; full protection against electrical damage (reverse polarity, over-voltage, short-circuit auto-reset) ensures industrial robustness. 

Total Crossed Beams

(In this context, this refers to maintaining a consistent sensing field and reliable detection rather than literal crossed optical beams.)

• The FQ Series ensures a stable and reliable detection zone, even in compact installations, meaning targets are detected with fewer missed or false triggers in demanding automation environments.
• The compact design, combined with robust optical performance, results in high detection repeatability across the series.

Beam Pitch Options

(Here interpreted as selectable sensing-distance variants rather than literal beam spacing.)

• Diffuse-reflection variants: e.g., nominal ~1.2 m for white target in one model. 
• Retro-reflective variants: e.g., nominal ~6 m with reflector. 
• Long-distance receiver models: e.g., nominal ~20 m for emitter/receiver arrangement.
• This range allows selection based on target size, distance, background reflectivity and mounting constraints—giving flexibility for varied automation tasks.

Intrinsic Synchronism

• The electronics are fully integrated—no external synchronising wiring required—simplifying installation even in compact or dense arrays.
• Time before availability after power-up is ≤ 200 ms typical—supporting quick system commissioning. 

Operational Advantages

• Versatile detection across optical principles: With models for diffuse, polarized, retro-reflective and long-distance receiver types, the FQ Series adapts to a wide variety of automation detection tasks.
• Compact & robust design: Short M18 body, P67 protection, full electrical protection suite make it suitable for space-constrained installations and industrial use-cases.
• Wide detection span & model flexibility: From ~1 m to ~20 m nominal sensing distances (depending on variant), the series accommodates everything from close-range part detection to long-span presence sensing.
• Applications: Ideal for conveyor part detection, packaging systems, presence sensing in automation lines, retro-reflective part detection, assembly automation and any environment where compact size, versatile optical principle, and industrial protection are desired.