Fiber Optic Sensor Through-beam Detector

Through-beam fiber optic sensors detect objects by transmitting light from a separate emitter to a receiver, offering high precision, long-range detection, and resistance to harsh environments.How Through-Beam Fiber Optic Sensors WorkThrough-beam sensors consist of two main components: a transmitter that emits light and a receiver that detects the light. The sensor detects an object when the light beam is interrupted, making it ideal for non-contact detection of small or fast-moving objects. Because the transmitter and receiver are separate, these sensors can achieve long detection distances, often several meters, and maintain high accuracy even for sub-millimeter targets .Key FeaturesHigh Detection Accuracy: Capable of detecting objects as small as 0.5 mm, suitable for precision manufacturing and automated assembly .Long Detection Range: The separate arrangement of transmitter and receiver allows detection over several meters .Environmental Resistance: Fiber optic materials are resistant to high temperatures, chemical corrosion, and mechanical stress, making them suitable for harsh industrial environments .Flexibility: Available in different fiber materials, lengths (1–2 meters), and diameters (core 1 mm, outer 2.2 mm), with protective tubes in stainless steel or copper-nickel plating for durability .Non-Contact Measurement: Prevents damage to both the sensor and the target, ideal for delicate or high-speed applications .ApplicationsThrough-beam fiber optic sensors are widely used in:Electronics manufacturing for detecting small components.Packaging and assembly lines for precise object detection.Automation systems requiring high-speed and reliable sensing.Harsh environments where conventional sensors may fail due to heat, dust, or chemical exposure .Advanced ModelsSome models, such as the FU series, offer short-distance high-precision detection (FU-66Z/68), long-distance monitoring (FU-67), and transmissive detection for size and shape judgment (FU-77TZ). These sensors can detect extremely small objects, down to 0.005 mm, and operate in temperatures ranging from -40°C to +70°C . Through-beam fiber optic sensors provide a versatile, precise, and durable solution for industrial automation, combining long-range detection with high environmental resistance and adaptability to complex installation conditions.