产品介绍

Product Introduction

1. Overview

The NJTT-101 road sign retroreflective measuring instrument is an instrument used for on-site measurement of the photometric performance (retroreflective coefficient R ') of retroreflective materials. It is a convenient handheld photoelectric instrument that can also be used for traffic safety management and on-site measurement of retroreflective signs by relevant departments such as highways, railways, and aviation. It can also be used to measure the reflective performance of retroreflective signs on truck type motor vehicle bodies and monitor the reflective quality of retroreflective materials produced to ensure that retroreflective sign materials meet the requirements of relevant standards.

The NJTT-101 road sign retroreflective measuring instrument consists of an optical system, detection amplification system, power supply and control system, display system, and instrument calibration block. To facilitate the calibration of instrument readings, a set of calibration blocks for calibrating instrument readings is also provided to ensure the accuracy and reliability of instrument measurements; The instrument uses a liquid crystal digital display meter to display the measured values; Using lithium batteries as the power source. 

2. Standard:

ISO3864,  GB/T18833-2012,  JT/T698-2007, JT/T690-2007, JT/T691-2007. .

3. Technical parameters

1. Observation angle（ α）： 0.2 °;

2. Incident angle（ β）：－ 4 °;

3. Light source: Warm white LED

4. Detector: Silicon diode (spectral optical efficiency function V according to CIE)（ λ））；

5. Display: LCD digital display meter;

6. Measurement range of retroreflection coefficient: 0.1~1999mcd · lx-1 · m-2.

4. Packing list