3nh CR2 Portable Color Difference Meter

Overview

The 3nh CR2 Portable Color Difference Meter is an industrial-grade spectrophotometric color measurement instrument engineered for high-precision, field-deployable color quality control in manufacturing environments. It operates on the CIE-compliant d/8° integrating sphere geometry with Specular Component Included (SCI), enabling accurate capture of total reflectance—including diffuse and specular components—critical for evaluating textured, glossy, or coated surfaces across plastics, coatings, textiles, ceramics, and electronics. Unlike tristimulus-based colorimeters, the CR2 employs filter-based spectral separation coupled with dual-CMOS photodetectors and full-spectrum LED illumination to deliver true spectrophotometric data across the visible range (400–700 nm). Its compact form factor (Ø30 × 100 mm, 88 g), integrated IPS 1.14″ color display, and Bluetooth 5.0 connectivity enable seamless integration into both standalone workflows and mobile-first quality assurance systems.

Key Features

• High-Repeatability Measurement: Achieves ΔE*ab repeatability ≤ 0.08 under standardized conditions (post-warm-up, 30 consecutive measurements on certified white tile at 5-second intervals), meeting ISO 13655 and ASTM E308 requirements for intra-instrument consistency.
• Non-Contact Auto-Calibration: Eliminates physical contact between sensor port and calibration tile during white/black calibration—reducing contamination risk and preserving long-term baseline accuracy of the reference standard, a critical requirement for GLP-aligned color labs.
• Standalone “Smart Button” Operation: Fully functional single-button interface supports measurement initiation, data review, parameter toggling (e.g., illuminant, observer angle), and pass/fail judgment without external devices—ensuring uninterrupted use in production line or warehouse settings.
• Dual-Path Optical Architecture: Features proprietary high-reflectance coating on a Ø20 mm integrating sphere and redundant CMOS sensing paths to minimize drift and enhance signal stability under variable ambient lighting or temperature fluctuations (0–40°C operational range).
• Extended Battery & Industrial MCU: Powered by a rechargeable Li-ion battery (Type-C interface) supporting up to 12,000 measurements per charge; controlled by an industrial-grade real-time microcontroller ensuring deterministic response and firmware robustness.
• Multi-Standard Color Space Support: Computes values in CIE LAB, XYZ, Yxy, LCh, CIE LUV, sRGB, Hunter Lab, βxy, and DIN Lab99, with 12 selectable color difference formulas including ΔE*00 (CIEDE2000), ΔE*cmc (1:1 & 2:1), and DIN ΔE99—enabling cross-industry compliance reporting.

Sample Compatibility & Compliance

The CR2 accommodates flat, curved, and moderately textured solid samples via its 8 mm measurement aperture. It is validated for use with opaque substrates in plastics injection molding, automotive paint shops, textile dye houses, and ceramic glaze production lines. The device conforms to CIE Publication No. 15:2018, GB/T 3978–2008 (Chinese national standard for colorimetry), and supports traceable calibration against NIST-traceable standards. While not FDA 21 CFR Part 11–certified out-of-the-box, audit trails, user access logs, and electronic signature capability are available through the optional SQCX PC software—facilitating alignment with ISO 9001, IATF 16949, and GMP documentation protocols.

Software & Data Management

The CR2 interfaces wirelessly with MOBCCS mobile application (iOS/Android) and SQCX desktop software (Windows). MOBCCS enables real-time spectral visualization, multi-standard pass/fail thresholding, color simulation overlays, metamerism index (Mt) calculation, whiteness (WI per ASTM E313/CIE), yellowness (YI per ASTM D1925), and Munsell C/2 conversion. Cloud-synced private color libraries allow users to build searchable, version-controlled databases—replacing physical Pantone® or RAL books. SQCX provides statistical process control (SPC) charts, batch reporting, PDF certificate generation, and CSV export compatible with LIMS and ERP systems. All measurement metadata—including timestamp, GPS location (mobile), operator ID, and environmental RH/temperature—is embedded in exported files.

Applications

• Plastics & Electronics: Monitoring batch-to-batch color consistency of injection-molded housings, PCB solder masks, and display bezels.
• Paint & Coatings: Verifying formulation adherence in OEM automotive refinishing and architectural coating QC labs.
• Textiles & Apparel: Assessing dye lot uniformity, wash-fastness color shift (ΔE post-laundering), and cross-material metamerism evaluation.
• Ceramics & Tiles: Validating glaze firing outcomes and detecting subtle hue deviations in mass-produced sanitaryware or floor tiles.
• Consumer Goods: Supporting rapid color validation during new product introduction (NPI) prototyping and supplier incoming inspection.

FAQ

Does the CR2 support SCI and SCE measurement modes?
No—the CR2 operates exclusively in SCI (Specular Component Included) mode per its d/8° integrating sphere design, optimized for total reflectance assessment of coated and glossy materials.
Can measurement data be exported in CSV or XML format for integration with enterprise systems?
Yes—SQCX software supports configurable CSV export with customizable field mapping; XML output is available via API extension upon request.
Is the white calibration tile NIST-traceable?
The included calibration tile is certified to meet ISO 13655 reflectance stability requirements; NIST-traceable calibration kits are available as optional accessories.
What is the expected lifetime of the LED illumination source?
Rated for ≥3 million measurements or 5 years of typical industrial use, with luminous flux degradation <5% over rated lifespan.
Does the CR2 comply with FDA 21 CFR Part 11 for electronic records?
The hardware itself does not include built-in Part 11 controls; however, SQCX software offers optional 21 CFR Part 11 modules (audit trail, role-based access, electronic signatures) for regulated environments.