Absolute Method Retro-Reflective Coefficient Tester

About Absolute Method Retro-Reflective Coefficient Tester

The Absolute Method Retro-Reflective Coefficient Tester is a precision instrument designed to evaluate the retro-reflective performance of high-visibility safety materials under both dry and simulated rain conditions. It accurately measures the retro-reflection coefficient of sample surfaces, making it suitable for occupational high-visibility warning garments and other visibility safety apparel to ensure personnel safety and compliance with national standards.

Application

The tester is suitable for a wide range of applications:

Traffic Safety Materials: Assessing retro-reflective performance of road and railway signs, traffic safety uniforms, and school uniforms for visibility compliance.

Occupational Safety Garments: Evaluating high-visibility protective clothing worn by various professionals for safe warning and visibility.

Vehicle Inspection: Measuring reflective markings on trucks and commercial vehicles.

Quality Control: Testing reflective vests, license plates, and other materials for retro-reflective compliance.

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

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

Accessories

Main unit

Product certificate

User manual

Delivery note

Acceptance form

Product brochure

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