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LN Series Concave and Convex Particle Defect Detector
Suitable for non-contact detection of surface defects such as particles, bulges, necking, bubbles, coarse segments, etc.
Video
Principle Principle


The red LED emits a light source, which is converted into parallel light through an optical lens and passes through the test area. When the object under test enters the test area, it blocks part of the parallel light. This light is then focused by a lens and converted into an electric signal on the photoreceptor element. By analyzing the current differences in the photosensitive element, it can determine whether there are bumps or indentations on the object being tested.

LN-3005
Three-axis detection, small blind spot range





Applicable diameter range

0.05mm - 5mm

Applicable Line Speed


5 - 1500m/min


Convexity and Concavity Setting Range


0.002 - 0.999mm



LN-3020
Three-axis detection, small blind spot range




Applicable diameter range

0.1mm - 18mm

Applicable Line Speed
5 - 1500m/min
Convexity and Concavity Setting Range

0.002-0.999mm

Measurement Modes
Surface Concave/Convex Particle Detection
Surface Concave/Convex Particle Detection
Application Scenario
The LN series defect detector is commonly used for continuous monitoring of surface defects on wires during production, with real-time alerts for detected issues.
  • Surface defect detection
    ultra-fast non-contact particle defect detection for fine round wires and fine flat wires.
  • Flexible and versatile auxiliary tooling options
    custom tooling can be easily adjusted according to different application scenarios and wire sizes.
  • Adopting high-speed three-axis detection
    High-speed three-axis detection mode: Expands coverage, enhances detail, precision, and comprehensiveness, improving quality and effectiveness.
Technical Features
Utilizes advanced components and high-speed DPS chips to ensure accurate data transmission.

Detection Principle


The red LED emits a light source, which is converted into parallel light through an optical lens and passes through the test area. When the object under test enters the test area, it blocks part of the parallel light. This light is then focused by a lens and converted into an electric signal on the photoreceptor element. By analyzing the current differences in the photosensitive element, it can determine whether there are bumps or indentations on the object being tested.





Diagram of blind spots in three-axis detection



From the above comparative illustration, it can be seen that the more axes of detection, the wider the coverage, and the smaller the detection blind spots. The smaller the blind spot range, the higher the detection accuracy of concave and convex defects.


Detailed Parameters
Models LN-3005 LN-3020
Applicable wire diameter 0.05-5mm 0.1-18mm
Number of axes 3axis 3axis
Line Speed 5-1500m/min 5-1500m/min
Lump and Neck Range 0.002-0.999mm 0.002-0.999mm
Accuracy ±1% of the set value ±1% of the set value
sampling frequency 200KHz 200KHz
Alarm output 2x24V-300mA&2x24V-1A 2x24V-300mA & 2x24V-1A
Power supply AC220V AC220V
I/O Interface Pulse input, digital input Pulse input, digital input
Display method Remote digital display Remote digital display
Ambient Temperature 0 to +50℃(32 to 122°F) 0 to +50℃(32 to 122°F)
Ambient Humidity 35% to 85% RH, No condensation 35% to 85% RH, No condensation
Dimensions 152x156x40(mm) 165x181x47mm(mm)