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MM-L300A - Laser Weld Monitor

New compact monitor for process development and quality control

The MM-L300A laser weld monitor helps to ensure weld quality and maintain high throughput by providing realtime feedback during the laser welding process to ensure weld success. MM-L300A works by detecting and recording a thermal signal from the area of laser interaction during the welding process. The SU-N300A thermal sensor samples the signal and provides an output waveform around which envelope limits can be set.


Key features MM-L300A - Laser Weld Monitor

  • The MM-L300A can detect the following production errors: 
    • Gap between parts
    • Missing part
    • Out of focus
    • Absence of cover gas
  • High temporal resolution (down to 1 µs) with a dedicated sensor, enables monitoring of both CW and pulsed lasers
  • Envelopes allow real-time comparison and detection of good and bad welds
  • Light weight, compact design reduces set-up space when integrating into production lines
  • Sensor can be mounted either on the optical axis of the laser or off-axis
  • Easy and intuitive operation


MM-L300A Controller .
Input power requirements Single phase, 90 – 250 VAC 50/60 Hz
Interfaz 15 pin D-sub, Ethernet (RJ-45)
Channel 1
Temporal resolution Min: 1 μs
Judgement function: Analysis Waveform
Judgement function: Judgement Upper and lower limit
Operational temperature range 0 – 40° C (non-condensing)
Operational humidity range
SU-N300A sensor .
Monitoring area Working distance approx. 200 mm, Signal detection diameter - about ø 2 mm
Guide light Green LED
Monitoring wavelengths 1,300 – 2,500 nm
Operational temperature range 5 – 50°C (non-condensing)
Operational humidity range
Protection level IP64 with connector
MM-L300A without connector dimensions (LxWxH) 243 mm x 230 mm x 89 mm (9.6 in x 9.1 in x 3.5 in)
MM-L300A without connector weight 3.0 kg (6.6 lb)
Sensor without connector dimensions (LxWxH) 35 mm x 50 mm x 96 mm(1.4 in x 2 in x 3.8 in)
Sensor without connector weight 0.2 kg (0.44 lb)
Seam weld example
Spot weld example

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