The CM-512m3A spectrophotometer is a handheld, multi-angle device that works ideally with metallic colors.

CM-512m3A Spectrophotometer (spectral type, multi-angle)

The Konica Minolta CM-512m3A Spectrophotometer is a multi-angle spectrophotometer that was created for use with metallic paints. The device has 0° viewing and illumination angles at 25°, 45°, and 75° that work with an exclusive geometry.

The device’s unique geometry offers an orientation error free symmetry that is often found lacking in other multi-angle devices. This device’s illumination provides impressively accurate results on both traditional and curved surfaces making formerly difficult samples such as door handles and vehicle mirror bodies easily measurable. The lack of moving parts means the handheld CM-512m3A Spectrophotometer is very hearty and rugged.

Konica Minolta CM-512m3A Spectrophotometer

CM-512m3A Spectrophotometer (spectral type, multi-angle)

Multi-angle design – A single operation allows measurements to be taken simultaneously from three different angles (25°, 45°, and 75°)

Ring illumination – With illumination provided from 18 radial directions, the effect of workpiece orientation on measurement results can be eliminated.

Line graph display – The graph display function enables easy color judgment even on production sites without using a personal computer. 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.

Surface color calculation

  • Color value: L*a*b* , L*C*h,
  • Color difference: ΔL*a*b*, ΔL*C*H*, ΔE*ab, CMC(l:c) , ΔE00(CIE DE2000)
  • Standard Observer: 2°/10°
  • Standard Illuminant: A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12

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.

Color-difference limit evaluation – Judgment as to whether or not a measured color is within a specific range can be made at a glance, thus simplifying quality-checking procedures.

440 data storage capacity – The CM-512m3A can store a total of 440 items of color-difference target data and measurement data.

CM-512m3A Spectrophotometer (spectral type, multi-angle)

Model CM-512m3A
Illumination/viewing system 3-angle circumferential illumination (25°, 45°, and 75°)/0° viewing angle
Wavelength range 400 to 700 nm
Wavelength pitch 20 nm
Photometric range 25°: 0 to 300% reflectance; 45°, 75°: 0 to 200% reflectance; Resolution: 0.01%
Light source Pulsed xenon arc lamp
Minimum measurement interval 3 seconds (when measuring a white calibration plate at 23°C)
Battery life Alkaline manganese batteries: Approx. 400 measurements at 10 sec. intervals (when dark color is measured)
Measurement/illumination area Ø12mm/ Ø20mm
Repeatability • Spectral reflectance: Standard deviation within 0.30%
• Colorimetric values: Standard deviation ΔE*ab within 0.05
• (Measurement conditions: White calibration plate measured 30 times at 10s intervals)
Interface RS-232C Terminal; D-sub 9-pin (female)
Display Dot-matrix reflective LCD with 26 characters x 7 lines (240 x 96 dots) with adjustable contrast
Display data • Colorimetric data: L*a*b*, L*C*h
• Color 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
Illuminant/ Observer condition • Light source: A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12
• Observer: CIE 2° and 10°
Operating temperature/humidity range 0 – 40°C; relative humidity 85% or less (at 35°C) with no condensation
Storage temperature/humidity range -20 – 45°C; relative humidity 85% or less (at 35°C) with no condensation
Power Four AA-size batteries or special AC adapter
Dimensions (W × H × D) 115 × 257 × 164mm
Weight Approx.1.4 kg (without batteries)

CM-512m3A Spectrophotometer (spectral type, multi-angle)

Catalog Download: Download PDF (2.5MB)

Owner’s Manual: Download PDF (9.1MB)

Case Study: Clemson University: Understanding and Controlling Color Download PDF (2MB)