ZTT-301 Retroreflective Marking Measuring Instrument is a special optical measuring device used to measure the reflective performance of road markings. The measured parameter is the retroreflective coefficient R' (or specific brightness) of the markings, and the unit is mcd· lx-1·m-2. The instrument is easy to operate and reliable in value. Used for laboratory or field measurement. It is an optional instrument for measuring the retroreflective optical properties of road markings in production, quality supervision, engineering construction, supervision, teaching and scientific research.
The instrument is designed with reference to relevant international technical documents and current national standards in my country, such as publication No. 72 of the International Commission on Illumination (hereinafter referred to as CIE), American ASTM D4061-94, German DIN67520, 67521, and Chinese national standards GB/ T 26377-2010 "Retroreflective Measuring Instrument", GB/T16311-2005 "Quality Requirements and Testing Methods for Road Traffic Markings", Transportation Industry Standard JT/T612-2004 "Retroreflective Measuring Instrument", JJG (Traffic) 059-2004 "Measurement Verification Regulations for Retroreflective Measuring Instruments", etc.
The instrument is mainly composed of two parts;
(1) Instrument host (including: light source, optical system, detector, amplifier, display, etc.);
(2) Instrument accessories (charger, zero adjustment board, calibration board, etc.).