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Calotester kaloMAX NT II S3
Spherical cap grinder (Calotest device) for the determination of layer thicknesses
 
  • Fast and easy layer thickness measurement
  • Reproducible measurement of wear and scratching resistance
  • Measurement of layer thickness
  • Easy to operate
  • For quality assurance and coating development
  • Suitable for hard coatings, lacquers, plastic coatings

 

The ball crater test (Calotest) is a well established method for the determination of layer thickness. With a rotating steel ball and an abrasive slurry, a spherical cap is ground through the coating into the base material of the sample. When examined with a microscope, the layer/base material interface appears as a circle or, in case of a multilayer coating, a system of concentric circles. The layer thickness can be calculated from the diameters of these circles and the diameter of the grinding ball.
This purely geometrical method gives highly accurate results even for layer thicknesses in the range of micrometers.
Evaluation and documentation can be further simplified by the software kaloSOFT and a camera-equipped microscope.

Calotester kaloMAX NT II S3
Calotester kaloMAX NT II S3 Calotester kaloMAX NT II S3 Measuring layer thickness with a Caltest device Measuring layer thickness with a Caltest device
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Range of application:
Layer thicknesses Approx. 0.3 – 30 μm
Diameter of the spherical cap Approx. 0.1 – 2 mm
Measurement accuracy 1 – 5 % (dependent on surface roughness)
Characteristics:
Ball diameter 15 – 30 mm
Clamping range for plane samples 50 mm
Clamping range for round samples 3 – 30 mm (clamping jaw for other dimensions on request)
Cross table travel 25 x 25 mm
Incline of sample level 60 degrees
Revolution speed 30-1000 1/min
Running periods arbitrary
Input voltage range 85 – 264 VAC
Input frequency range 47 – 63 Hz
Dimensions 300 x 295 x 235 mm (w / d / h)
Weight Approx. 8 kg
  • Calotester kaloMAX NT II S3 0with cross table
  • Power supply
  • Manual
  • Detachable vice
  • Grinding paste of various granulation
  • Various microscopes equipped with high resolution cameras
  • Evaluation software kaloSOFT
  • All-in-one solutions
kaloSOFT - Measuring of calotteskaloSOFT software for measuring spherical caps
Developed and produced by BAQ in Germany