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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