Konica Minolta CM-25CG Spectrophotometer

Konica Minolta CM-25cG Spectrophotometer

The Konica Minolta CM-25cG is an advanced spectrophotometer color measurement instrument, integrating a 60-degree gloss sensor along with a 45°:0° illumination geometry. This capability allows for simultaneous color and gloss measurement. The technology ensures rapid and accurate color and gloss data acquisition unaffected by surface geometry, thanks to an interchangeable aperture mechanism between 8mm (MAV) and 3mm (SAV), a circumferential illumination system, and the ability to complete each measurement within just 1 second.

The unique design of the CM-25cG, being both lightweight and well-balanced, enhances convenience when performing measurements in hard-to-reach areas, such as automotive interiors. It also comes with an advanced optical sample observation system, making sample alignment for precise measurements much easier. As one of the first instruments on the market with this function, the CM-25cG also ensures data consistency through high Inter-Instrument Agreement (IIA) and Inter-Model Agreement (IMA).

Key Features of KONICA MINOLTA CM-25cG

– Color measurement geometry: 45c:0° (45° circumferential illumination / 0° viewing)

– Integrated 60° gloss sensor

– Inter-Instrument Agreement (IIA):

• Colorimetric: ∆E*ab within 0.15 (average of 12 BCRA Series II color tiles)
• Gloss: ∆GU within ±0.2 GU (0-10 GU), ∆GU within ±0.5 GU (10-100 GU)

– Circumferential optical illumination system

– Fast measurement speed: completed in approx. 1 second

– Stable upright design for easy handling and sample alignment

– Rechargeable lithium-ion battery

– Connectivity options including wireless (Bluetooth) and USB

Technical Specifications

• Color
  • Illumination/viewing system:
    • 45°c:0° method (45° circumferential illumination, 0° vertical viewing angle)
    • Complies with CIE No.15, ISO 7724/1, ASTM E179, DIN 5033-7, JIS Z 8722
  • Detector: Dual 40-element silicon photodiode array
  • Spectral separation device: Planar diffraction grating
  • Wavelength range: 360 nm to 740 nm
  • Wavelength pitch: 10 nm (approx. 10 nm FWHM)
  • Reflectance range: 0 to 175%, output resolution: 0.01%
  • Light source: Pulsed Xenon lamp
  • Measurement/illumination area:
    • MAV: Ø8.0 mm / 12 x 16 mm
    • SAV: Ø3.0 mm / 12 x 16 mm
  • Repeatability: Spectral reflectance: Standard deviation within 0.04%; Colorimetric value: Standard deviation within ΔE*ab 0.04 (Measurement conditions: White calibration plate measured 30 times at 10-second intervals after white calibration)
  • Inter-instrument agreement: Within ΔE*ab 0.15 (Average for 12 BCRA Series II color tiles compared to values measured with the master body at 23°C)
  • CIE Observers: 2° and 10° CIE Standard Colorimetric Observers
  • CIE Illuminants: A, C, D50, D65, F2, F6, F7, F8, F10, F11, F12, ID50, ID65, User-defined illuminant (simultaneous evaluation with two light sources possible)
  • Data display: Spectral values/graph, colorimetric values/graph, color difference values/graph, PASS/FAIL judgment, pseudo color, color assessment
  • Color space / Colorimetric data: XYZ, Yxy, CIELAB, CIELCh, HunterLAB, ∆E*ab, ∆E94, ∆E00, CMC (l:c), ∆EHunter, MI, Munsell, WI (ASTM E313-73/96; CIE (WI/Tint)), YI (ASTM E313-73/96; ASTM D1925), ISO Brightness
• Gloss
  • Illumination/viewing system: 60° optical system complying with ISO 2813, ISO 7668, ASTM D523, ASTM D2457, DIN 67530, JIS Z8741, JIS K5600
  • Detector: Silicon photodiode
  • Measurement range: 0 to 200 GU; output/display resolution: 0.01 GU
  • Light source: White LED
  • Measurement/illumination area:
    • MAV: Ø10 mm
    • SAV: Ø3.0 mm
  • Repeatability: 0 – 10 GU: ± 0.1 GU; 10 – 100 GU: ± 0.2 GU; > 100 GU: ± 0.2%
  • Inter-instrument agreement: Gloss value (MAV) (compared to values measured with the master body under Konica Minolta standard conditions):
    • 0 – 10 GU: ± 0.2 GU
    • 10 – 100 GU: ± 0.5 GU
• Measurement time: Approx. 1.0 second
• Minimum measurement interval: Approx. 2.0 seconds
• Battery performance:
  • Stand-alone: Approx. 3000 measurements (at 10-second intervals at 23°C)
  • Bluetooth® enabled: Approx. 1000 measurements (at 10-second intervals at 23°C)
• Connectivity: USB 2.0 standard, optional Bluetooth®
• Data memory:
  • Target/Target data: 2500
  • Sample/Sample data: 7500
• Power supply: Rechargeable Lithium-Ion battery, USB bus power
• Dimensions (W × H × D) [mm]: 81 x 81 x 224 mm
• Weight [g]: Approx. 600 g (including battery)
• Display languages: English, French, German, Italian, Polish, Portuguese, Russian, Spanish, Turkish, Simplified Chinese, Japanese
• Display: 2.7-inch TFT color LCD
• Operating temperature/humidity range: 5 – 40°C, relative humidity 80% or less (at 35°C) non-condensing
• Storage temperature/humidity range: 0 – 45°C, relative humidity 80% or less (at 35°C) non-condensing
• Standard accessories: Calibration plate, Lithium-Ion battery, flat-type battery cover, wrist strap, USB cable, USB power supply
• Optional accessories: Hard case, battery charger and spare battery, stapler-type target mask, Bluetooth® module, SpectraMagic™ DX software