Konica Minolta CR-5 Chroma Meter

Konica Minolta CR-5 Spectrophotometer

The CR-5 Colorimeter: Compact, versatile, and multi-functional, the Konica Minolta CR-5 is designed with a top-port measurement configuration, optimized for rapid and convenient evaluation of solid specimens. Operators simply place the sample onto the measurement port and press the MEAS button, eliminating the need for sample clamping or shifting alignments. The instrument is also equipped with a Ø3mm aperture lens for small-scale or custom target samples. Furthermore, when paired with a Petri dish (optional accessory), the unit seamlessly measures liquids, pastes, and powder forms.

Operating Instructions for the Konica Minolta CR-5

Operating the Konica Minolta CR-5 spectrophotometer is a straightforward 3-step workflow, making it exceptionally user-friendly even for beginners. Featuring an integrated operation wizard, the device guides operators through configuration and routine testing without requiring continuous reference to the instruction manual.

• Step 1: Initialization and Power On: Upon powering on, the CR-5 automatically initializes and executes an automated white/100% calibration* utilizing an internal white calibration plate positioned behind the shutter. (Note: This automated routine does not apply to liquid transmission cell measurements).
• Step 2: Sample Positioning: For reflectance measurements, the top-port configuration accommodates specimens of diverse shapes and dimensions. For transmittance measurements, the CR-5 features a spacious transmission chamber designed for evaluating liquids using optional cells.
• Step 3: Executing Measurements: Press the MEAS button to trigger the measurement cycle. Precise data readouts are displayed instantaneously on the integrated screen.

LCD Display of the CR-5 Colorimeter

This color measurement instrument features a built-in display that can be configured into any of 7 operating languages: English, German, Japanese, French, Spanish, Italian, and Simplified Chinese.

Data Logging and Storage Capabilities of the CR-5

The CR-5 delivers high convenience regarding the storage of personal condition settings and measurement records. Operators can back up operational settings to a USB flash drive, minimizing setup workloads and boosting workplace efficiency. Concurrently, raw data and calculated testing results can be logged to a USB drive, supporting retrospective data analysis.

Transmittance Measurement Capabilities of the CR-5

The transmittance measurement chamber of the CR-5 is engineered to be large and precise, capable of accommodating substantial specimens up to a maximum thickness of 60mm. For liquid samples, the system offers optional measurement cells with three different optical path lengths to accommodate varying sample densities, in addition to supporting standard 10mm wide cells.

Standard Chemical Indices Measurement

The CR-5 enables effortless determination of critical industry-specific color indices widely used in the chemical and pharmaceutical sectors, including Gardner, Iodine, Hazen (APHA), European Pharmacopoeia, and US Pharmacopeia, without the tedious handling of physical standard solutions.

Applications of the CR-5

This instrument is extensively implemented within quality workflows throughout the pharmaceutical, chemical, food manufacturing, and various processing industries.

Technical Specifications

• Illumination/Viewing System:
  • Reflectance:
    • di:8°, de:8° (diffuse illumination, 8° viewing angle), switchable SCI (Specular Component Included) / SCE (Specular Component Excluded)
    • Complies with CIE No. 15, ISO 7724/1, ASTM E 1164, DIN 5033 Teil 7, and JIS Z 8722 condition c standards
  • Transmittance:
    • di:180° (diffuse illumination, 180° viewing angle)
• Integrating Sphere Size: Ø 152 mm
• Detector: Dual 40-element silicon photodiode array
• Spectral Separation Device: Planar diffraction grating
• Light Source: Pulsed Xenon lamp (with UV cut filter)
• Measurement Time: Approx. 1 second (for data display/output); minimum measurement interval: 3 seconds
• Measurement/Illumination Area:
  • Reflectance: Changeable by replacing target masks and adjusting lens optical settings. LAV: Ø30 mm / Ø36 mm; MAV (optional): Ø8 mm / Ø11 mm; SAV (optional): Ø3 mm / Ø6 mm
  • Transmittance: Ø20 mm
• Repeatability:
  • Chromaticity value: Standard deviation within $\Delta E^*ab \le 0.04$ (When a standard white calibration plate is measured 30 times at 10-second intervals after white calibration)
• Inter-Instrument Agreement:
  • Within $\Delta E^*ab \le 0.15$ (Typical) (LAV/SCI)
  • (Based on the average of 12 BCRA Series II color tiles compared to values measured with the master body under Konica Minolta standard conditions)
• Sample Chamber:
  • Sides open (no sample length limitations)
  • Depth (maximum sample thickness): 60 mm
  • Optional sample holders can be installed/detached to hold sheet specimens or liquid sample cells
• Display Unit: 5.7-inch TFT color LCD screen
• Display Languages: English, Japanese, German, French, Italian, Spanish, Simplified Chinese
• White Calibration: Automated white calibration (reflectance) / 100% calibration (transmittance) utilizing an internal white calibration plate (Not applicable to 100% calibration when utilizing cells for liquid transmittance measurements.)
• Interface Ports: USB 1.1 (For PC connection and USB flash drive); RS-232C (For serial printer connection)
• Standard Observers: CIE 2° Standard Observer or CIE 10° Standard Observer
• Standard Illuminants: CIE Illuminant C, Illuminant D65
• Displayed Data: Colorimetric values, color-difference values, color-difference graphs, PASS/FAIL judgments, pseudocolor, color evaluation
• Color Spaces: L*a*b*, L*C*h, Hunter Lab, Yxy, XYZ, Munsell, and color differences within these spaces (except Munsell)
• Colorimetric Indices:
  • Reflectance: MI; WI (ASTM E 313-73, ASTM E 313-96); YI (ASTM E 313-73, ASTM E 313-96, ASTM D 1925)
  • Transmittance: Gardner, Iodine, Hazen (APHA), European Pharmacopoeia, US Pharmacopeia
• Color Difference Equations: $\Delta E^*ab$ (CIE 1976), $\Delta E^*94$ (CIE 1994), $\Delta E_{00}$ (CIE 2000), $\Delta E$ (Hunter), CMC (l:c)
• Pass/Fail Tolerance Judgment: Tolerances can be specified for colorimetric absolute values (except Munsell) and color-difference values
• Data Storage Capacity: Measurement data: 4,000 records; Target color data: 1,000 records
• USB Flash Drive Functions: Logs measurement data and target color data. Saves/loads measurement condition profile configurations (Security-protected USB drives cannot be utilized.)
• Power Supply: AC 100 to 240 V, 50/60 Hz (utilizing dedicated AC adapter)
• Dimensions:
  • Sliding cover closed: 385 (W) × 192 (H) × 261 (D) mm
  • Sliding cover open: 475 (W) × 192 (H) × 261 (D) mm
• Weight: Approx. 5.8 kg
• Operating Temp/Humidity Range: 13 to 33 °C, relative humidity 80% or less non-condensing (at 35 °C)
• Storage Temp/Humidity Range: 0 to 40 °C, relative humidity 80% or less non-condensing (at 35 °C)