Digital Color Meter CHC-I

This Digital Color Meter CHC-I implements fully digital integral photometric and colorimetric measurement technology compliant with IEC 60904-9 standards. The absence of analog components eliminates zero drift inherent in conventional colorimeters. The digital X(λ), Y(λ), Z(λ) sensor provides extensive dynamic range, eliminating range-changing errors while delivering enhanced anti-interference capability and measurement accuracy.

The CHC-I incorporates an internal RS232 computer interface with software-based calibration protocols. This configuration supports continuous monitoring and remote measurement applications. The proprietary software facilitates instrument calibration, data acquisition via RS232 interface, and comprehensive result documentation. Calibration against standard light sources enables exceptional measurement precision for x, y color coordinates and color temperature parameters.

This real-time measurement system operates under Windows environments and features a 128×64 lattice LCD display, RS232 computer interface with software suite, and data hold functionality.

Technical Specifications

1. Illuminance Measurement (vertical test orientation)

• Relative spectral sensitivity error of digital V(λ) sensor: f₁<±5.5%
• Dynamic range: 0.1-50,000 lx
• Accuracy: <±4%
• Sensitivity: 0.001 lx
• Repeatability: 0.001 lx

2. Color Coordinate Measurement (vertical illuminance >5 lx)

• x, y coordinates: ±0.002 (CIE Standard Source A, 500 lx)
• Repeatability: ±0.0005 (CIE Standard Source A)

3. Color Temperature Measurement (vertical illuminance >5 lx)

• Dynamic range: 1,350–25,000 K
• Sensitivity: 1 K
• Accuracy: ±20 K (CIE Standard Source A, 500 lx)
• Temperature coefficient: -0.1%/°C
• Refresh rate: 1 measurement/second (≥10 lx), 1 measurement/3 seconds (<10 lx)

Application Scope

High-speed measurement of illuminance and correlated color temperature for incandescent lamps, halogen lamps, compact fluorescent lamps (CFL), high-intensity discharge (HID) lamps, light-emitting diodes (LED), and liquid crystal display (LCD) screens.

For advanced spectral analysis applications, please reference the LMS-6000 Portable CCD Spectroradiometer. This represents the latest generation of portable measurement instrumentation.

Product Identification: CHC-I Digital Colorimeter & Illuminance Meter