LPKF TMG 3 Radial
Measuring Device

Transmission Measuring for Radial Parts

  • Damage-free measurement of cylindrical applications
  • Flexible setting options
  • In cooperation with Fraunhofer ISC

Best in Class for Transmittance Measurement

Quality inspection prior to laser processing

The transmittance properties of two plastic joining partners are decisive for the quality in laser transmission welding. Checking the material properties before laser plastic welding pays off as part of comprehensive quality assurance system. The TMG 3 Radial is a certified measuring instrument that has been traceably calibrated with the cooperation of the Fraunhofer Institute for Silicate Research ISC.

TMG 3 Radial Highlights

The traceable calibrated and certified device measures the transmittance @ 980 nm of plastics and detects material deviations caused by injection moulding. The results are available within a few seconds.

• Two operation positions possible – horizontal and vertical / horizontal for easy access and measurement also for longer parts and tubes / vertical position for short parts and fine adjustment of sensors

• Different adjustment features and screws for precise but flexible part positioning

• Insensitive to light interferences

• Stand-alone operation with a PC and software

• LPKF test laboratory and procedures IATF 16949 compliant

• Optionally available: Reference glass filter for inhouse checking of transmission values


For all types of plastics:  Different types of plastic with additives and colors have different transmission values ​​that can be tested.

For different components: Radially symmetrical applications with diameters up to 45mm and wall thicknesses up to 4mm. 

  • cables
  • tubes
  • valves
  • capsules

Optional reference glass filter

With an optional reference glass filter with a defined transmission, the correct function of the TMG 3 Radial can be monitored and ensured during operation.


The only certified measuring device (pdf - 359 KB)

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