Colour and Light Measurement Solutions

CM-512m3A Portable Spectrophotometers

CM-512m3A Portable Spectrophotometers
Konica Minolta



  • Simultaneous measurements under 25°, 45°, and 75° angle
  • Perfect circumferential illumination by Xenon Flash with 18 radial aligned glass fibres per angle, eliminating variations by instrument orientation
  • The line graph display function enables easy colour judgment even on production sites
  • Evaluation equation suitable for measurements of metallic/pearl coating correlates well with visual evaluation. 
  • With the CM-512m3A, the ΔE00 (CIE 2000) equation is used with parameters fine-tuned based on proprietary knowhow to provide measurement data for metallic/pearl coatings which correlate well with visual evaluation.
  • Average measurement. 
  • The CM-512m3A supports automatic average measurement and manual average measurement. In the former, precision is increased by taking multiple measurements of the same specimen location setting; in the latter, measurements of different specimen locations are performed to efficiently determine the overall average data. In addition, an outlier elimination function allows the two measurements with the greatest difference from the average to be removed before calculation is performed.
  • Very rugged design and compact design allow fast and accurate QC in the production line.


  • Automobile, Metallic Paint


Illumination / Viewing system 3-angle circumferential illummination(25°, 45°, and 75°) /0° viewing angle
Wavelength range 400 to 700 nm
Wavelength pitch 20 nm
Light source 3 pulsed xenon arc lamps
Minimum measurement interval 7 seconds (when measuring a white calibration plate at 23°C)
Measurement/ illumination area Ø 12 mm / Ø 20 mm
Display Dot-matrix reflective LCD with 21 characters ×7 lines (128 × 56 dots)
With contrast control slide
Display data Colourimetric data: L*a*b*, L*C*h
Colour difference data: Δ(L*a*b*), Δ(L*C*H*), ΔE*ab, CMC(l:c), ΔE00(CIE DE2000)
Other data display: FF value, line graph, temperature
Observer condition CIE: 2° and 10° standard observer
Illuminant condition CIE: A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12 (simultaneous evaluation is possible using two light sources)
Temperature detection Detector: Thermopile
Wavelength: 8 to 13 µm
Measurement/display range: -10 to 80°C (0.1°C increments)
Measurement diameter: Ø 20 mm
Measurement rating: 0 to 50°C: ±2.5°C ±1 digit (when an object of 0.93 emissivity is measured at ambient temperatures of 18 to 28°C)