Retro-Reflective Coefficient Tester GB/T 28468-2012
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The Retro-Reflective Coefficient Tester is a precision instrument designed to evaluate the retro-reflective performance of high-visibility safety materials, including professional occupational warning garments and reflective school uniforms for children. By accurately measuring the retro-reflection coefficient, the system provides objective and reproducible data for quality assessment, ensuring compliance with national and international safety standards.
Standards
The system supports compliance with the following standards:
GB/T 28468-2012 – Method for Measuring Retro-Reflective Coefficient of School Safety Uniforms (Appendix A)
GB 20653-2020 – Method for Measuring Retro-Reflective Coefficient of High-Visibility Protective Clothing (Appendix C)
GB/T 18833-2012 – Road Traffic Reflective Film
GB/T 26377-2010 – Retro-Reflective Measurement Instruments
JT/T 612-2004 – Retro-Reflective Measurement Instruments
ASTM E808 – Standard Guide for Description of Retro-Reflective Materials
ASTM E809 – Standard Test Method for Measurement of Retro-Reflector Optical Performance
ASTM E810 – Standard Test Method for Retro-Reflective Coefficient of Sheeting Materials
DIN 67520 – Minimum Luminance Requirements for Traffic Safety Reflective Materials
Parameters
| Parameter | Specification |
|---|---|
| Measurement Range | 0–3000 cd/(lx·m²) |
| Measurement Accuracy | ±0.1 cd/(lx·m²) using microphotometric acquisition system |
| Observation Angle | 0°–2°, adjustable, ±0.002° |
| Incidence Angle | -45° to 45°, adjustable, ±1° |
| Light Source | Standard illuminant A, color temperature 2856 K, uniform vertical illuminance |
| Detector | Silicon photodiode with CIE-corrected spectral filter, V(λ) compliance |
| Sample Reference Center | Aperture subtended angle 12′, vertical illuminance uniformity ≤5% |
| Detector Movement | Vertically adjustable, observation angle 12′–120′ |
| Calibration Angles | Up to 12 angle pairs can be calibrated at once |
| Data Storage | Up to 10.000 test records |
| Screen | 4.5" touchscreen, 854 × 480 resolution |
| Storage Method | TF card |
| Sample Fixture | Quick-change structure for easy mounting |
| Calibration Plates | One black and one white calibration plate included |
| Power Supply | AC 220 V, 50 Hz, 500 W |
| Weight | Approx. 10 kg |
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