product overview
By Beijing Runjie Tiandi Technology Co., LtdSTT-201AThe type protruding road sign measuring instrument is an instrument that measures the main performance indicator of protruding road signs - the luminous intensity coefficient. This instrument is suitable for photometric laboratories, testing centers, and highway construction sites; It is also suitable for the inspection of product quality by manufacturers of raised road signs. This instrument measures rectangular protruding road signs.
**The main technical basis for the design of this instrument is China's national standardsGB 8416-2003Visual Signal Surface Color, GB/T 3978-2008Standard Lighting Bodies and Geometric Conditions, GB/T 3979-2008Methods for Measuring Object ColorsGB/T 24725-2009The protruding road sign. We also referred to relevant standards from other countries, such asASTM-810,ASTM-E809,DIN 67520）.The detector of this instrument complies withCIEAccording to the requirements of the International Commission on Illumination's standard photometric observer, the color temperature of the light source should comply withCIEstandardAThe light source and geometric conditions of the instrument meet the requirementsCIETechnical document54The regulations of the number. Therefore, the technical conditions of this instrument are consistent with those internationally.

●Specification
1Observation angle（α）：0.1°～2.0°Continuously adjustable;
2Incident angle (includingβ 1andβ 2）：β 1do±0°、β 2respectively±0°、±5°、±10°、
±15°、±20°；
3Color temperature of light source:2856K(Compliant with)CIEstandardALight source);
4Detector: Silicon diode+V（λ）Correction (compliant)CIEStandard photometric observer);
5Measurement range:0～1999 mcd•lx-1；
6Power supply: lithium battery pack7.4V(Capacity is12Ah).