ASTM E809 Compliance Retroreflectometer
Whats/App: +86 156 1874 6768
Web: standard-groups.com
Standards
The system supports compliance with the following standards:
GB 20653-2020 – Occupational High-Visibility Warning Clothing, Appendices C.4.1 (Absolute Method) and D
GB/T 28468-2012 – School Traffic Safety Reflective Uniforms
ASTM E808 – Standard Guide for Description of Retro-Reflective Materials (Reference)
ASTM E810 – Standard Test Method for Retro-Reflective Coefficient of Sheeting Materials (Reference)
DIN 67520 – Minimum Luminance Requirements for Traffic Safety Reflective Materials (Reference)
Parameters
| Parameter | Specification |
|---|---|
| Retro-Reflective Coefficient Range | 0.01–500 cd/(lx·m²) |
| Observation Angle | 12′–120′ (2°) adjustable, precision 3′, minimum division 1′ |
| Incidence Angle | 0.1°–40.0° adjustable, precision 0.5°, minimum division 0.1° |
| Sample Size | 150 × 150 mm |
| Light Source | Standard illuminant A as per GB/T 3978 |
| Sample Reference Center to Light Aperture | ≤12′, vertical illuminance uniformity ≤5% |
| Sample Reference Center to Detector Aperture | ≤12′, vertically adjustable for 12′–120′ observation |
| Detector Distance to Sample | ≥15 m |
| Wet Test Parameters | Spray nozzle 1000 mm from sample, 10°±1° vertical angle, uniform water flow, enclosed spray chamber, water flow equivalent to 284 mm/h |
| Spray Chamber | Rigid transparent material with movable panel, 150 × 150 mm light channel, black-painted edges to reduce scatter |
| Spray Nozzle | Diameter 1.19 mm, connected to supply tube for stable conical water column |
| Power Supply | AC 220 V, 50 Hz, 1 kW |
| Main Console Dimensions | 900 × 780 × 1700 mm |
| Sample Table Dimensions | 630 × 430 × 1900 mm |
| Sample Table Weight | 80 kg |
| Main Console Weight | 115 kg |
| Test Environment | Dark room, temperature 20°C ±2°C, humidity 65% ±5% |
Features
High-resolution microphotometric acquisition system for precise measurements
Infrared distance measurement for accurate positioning between main console and sample table
Wireless communication module for cable-free control and data transfer
Two measurement modes: fixed-point and scan, for flexible data acquisition
Precision motor-driven positioning with low noise
Automatic adjustment of incidence and observation angles for simplified testing
Stable light source with uniform vertical illuminance
Steady water spray system with collection trays and overflow control for wet testing
Quick-change sample fixture for efficient sample mounting
Core 32-bit multifunction mainboard for reliable control
Color touchscreen with menu-driven interface and metal keys
Automatic data output and report generation
Compatible with connected software for real-time data analysis
Enclosed dark test channel to minimize ambient light interference
Test Procedures
Sample Preparation
Randomly cut four samples of 150 × 150 mm.
Pre-treat samples according to standard or customer requirements.
Parameter Setup
Configure general test parameters, file names, and number of test repetitions.
Testing
Install sensors on the sample table and secure connections.
Turn on the light source and select dry condition test to start measurement.
For wet testing, adjust spray nozzle and water flow to cover the sample, maintain stable spray for at least 2 minutes before measurement.
Data Recording
Acquire data in real-time via the software interface.
Generate reports comparing dry and wet retro-reflective performance.
Maintenance Information
Regularly clean light source, sensors, and spray nozzle to maintain accuracy
Inspect sample fixtures and motor-driven mechanisms for smooth operation
Calibrate system periodically in both dry and wet conditions
Verify touchscreen and software data acquisition function before each test
Store system in a dark, dust-free environment to prevent light or sensor degradation
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