●product overview
By Beijing Runjie Tiandi Technology Co., LtdSTT-101The type of retroreflector marker measuring instrument is a device used for on-site measurement of the photometric properties (retroreflector coefficient) of retroreflector materialsRThe instrument. It is a convenient handheld photoelectric instrument that can be used for traffic safety management and on-site testing of retro reflective signs by relevant departments such as highways, railways, and aviation. It can also be used to measure the reflective performance of retro reflective signs on the body of trucks and motor vehicles, and to monitor the reflective quality of production retro reflective materials to ensure that the retro reflective sign materials meet the requirements of relevant standards.
**The instrument consists of an optical system, a detection amplification system, a power supply and its control system, a display system, and an instrument calibration block.
**The instrument is operated according toGB/T 26377-2010Reverse Reflection Measuring Instrument andGB/T 18833-2012Designed in accordance with the relevant standards of "Road Traffic Reflective Film" and in compliance withGB21861-2014Standard for Motor Vehicle Safety Technical Inspection Items and Methods. For the convenience of calibrating instrument readings, a set of calibration blocks for calibrating instrument readings is also equipped to ensure the accuracy and reliability of instrument measurements; The instrument uses a LCD digital display to show the measured values; And adopt2joint5Nickel hydrogen batteries are used as power sources.

●Specification
1.Observation angle（α）：0.2°；
2.Incident angle（β）：－4°；
3.Light source: Warm white light-emitting diode
4.Detector: Silicon diode (compliant)CIESpectral luminous efficiency functionV（λ）；
5.Display: LCD digital display meter;
6.Reverse reflection coefficient measurement range:0～1999cd•lx-1•m-2.