LFY-224E Dry-Wet State Reflectance Coefficient Tester

Main purpose

This instrument is used to evaluate the reflective performance of professional high-visibility warning materials in both dry state and rain-wet state. It measures the retroreflective coefficient of the sample surface. It is applicable to various types of visible warning suits worn by personnel, ensuring their safety warnings. Technical indicators
1. The hard plastic cover is equipped with a movable door, and the cover has square holes with a side length of 150mm; 
2. The gutter can prevent water from falling, and the surrounding area of the square holes is painted black; 
3. The nozzle diameter is 1.19mm, and the water pipe generates a conical, stable and uniform water column; 
4. The nozzle is 1000mm away from the sample; 
5. When the water column contacts the sample, it forms an angle of (10 ± 5) degrees in the vertical direction with the sample surface; 
6. The pressure stabilizing device ensures stable and uniform pressure regulation, is easy to control, and is equipped with a water collection trough and a collector; 
7. Sample holder device, sample size: 150mm × 150mm; 
8. Water spraying speed: 284mm/h; 
9. Time control: 0 - 99.99min, accuracy: 0.01min; 
10. Power supply: 220V 50Hz; 
11. Light source: standard light source A, color temperature is 2856K; 
12. Light detector: lux range from 0.01lx to 200klx, aperture angle δ < 12'; 
13. Observation angle α: adjustable from 12' to 2°, accuracy: 6'; 
14. Incidence angle β: adjustable from 0° to 40°, accuracy: 1°; 
15. Sample holder: can be precisely positioned in the first rotation axis β1 and the second rotation axis β2 positions; 
16. Distance between the light detector and the sample surface: 15m. 
Applicable standards 
GB 20653-2020 "Protective Clothing - Occupational High Visibility Warning Clothing" Appendix C, Appendix E 
GB/T 33536-2017 Protective Clothing Forest Fire Protection Clothing 
GB/T 38046-2019 Automobile Passenger Reflective Vest 
GB 8965.2-2022 Protective Clothing - Welding Clothing