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QMT Products: July 2013
New high accuracy metrology CT system


The new MCT225 HA from Nikon Metrology provides high accuracy Metrology CT for a wide range of sample sizes and material densities with 3.8+ L/50 µm MPEl accuracy in accordance with the VDI/VDE 2630 guideline. All internal and external geometry is measured efficiently in a single non-destructive process. A full 3D visualization of the sample volume additionally provides valuable insights into part deformations and internal structural integrity.

MCT225 HA is set up in the factory using accuracy standards traceable to the UK's national measurement institute (NPL) and verified using VDI/VDE 2630 guidelines for Computed Tomography in Dimensional Measurement. “Absolute accuracy” guarantees measurement accuracy without time consuming comparative scans or reference measurements; samples are simply placed on a rotary table inside the enclosure and measured.

The key component of the MCT225 HA system is the in-house developed 225 kV micro-focus X-ray source that is actively cooled for thermal stability. The X-ray “CoolGun” in combination with the high resolution panel detector produces sharp images with low noise levels, enabling magnification levels up to 200x.

Another key component of the MCT225 HA is the high-precision manipulator developed in close cooperation with the Nikon development team in Japan. The manipulator guideways are equipped with high-resolution optical encoders and error corrected using the laser interferometer mapping techniques employed for CMMs.

The manipulator has been suspended on anti-vibration mounts to eliminate external vibration influences. To minimize thermal effects the interior of the MCT225 HA enclosure is temperature controlled, effectively creating a conditioned measurement room stable to 20°C ± 0.1°C.
www.nikonmetrology.com
  
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