产品介绍

Product Introduction

1. Application:

NJTT-302 Road Marking Retroreflection Measuring Instrument (Rain Night version) is a professional measuring instrument used to measure the reflective performance of road marking. It supports the measurement of the retroreflective coefficient of markings under dry, humid, and rainy night conditions. The measured parameter is the reflection coefficient R 'or specific brightness of the marking, in units of mcd · lx-1 · m-2. This instrument is easy to operate, accurate in measurement, exquisite in appearance, and easy to carry. It is suitable for laboratory and construction site measurements. It is the preferred instrument for quality supervision and inspection of transportation engineering, construction of road marking engineering, supervision, and measurement of the retroreflective performance of road marking by scientific research institutions.

2. Standards

JJG (Transportation) 059-2004, GB/T16311-2009, GB/T 26377-2010, DB36/T978-2017, DB51/T 2429-2017, JJF1809-2020, ASTMD4061-94,  DIN67520, DIN67521

3. Functional characteristics

■ One click calibration: white and yellow standard coefficients are convenient and fast

■ Open light path: no need to block external light

■ Support rainy nights, dry, and humid road surfaces: measurement of hot melt markings and vibration markings

■ Data storage function: TF data storage card can view data online on the computer

■ Automatic color recognition measurement: no manual switching required

■ LED fluorescent display screen: outdoor measurement data is clearly visible

■ Voice broadcasting: instant listening of measurement data, efficient

■ Temperature and humidity display: Real time display of temperature and humidity

■ International standards: in compliance with national standards and in line with international standards

■ Bluetooth printer: on-site printing of data

■ Clear reading: ergonomic visual design

■ Lightweight anti-corrosion: aluminum alloy host

■ Convenient to carry: The host has a delicate and compact appearance

4. Technical Parameter

Observation angle: α= 1.05 °

Incident angle: β= 88.76 °

Complementary angle: 1.24 °

Light source color temperature: 2856K ± 50K (open path)

Detector: Silicon diode+V（ λ） Corrector, meeting the requirements of CIE standard photometric observer spectral optical efficiency

Repeatability measurement error: ≤ 2%.

Measurement range of retroreflection coefficient R ': 0-5000 mcd · lx-1 · m-2

Battery continuous working time: ≈ 72 hours

Storage capacity: ＞ 150000 pieces

Screen: 4.3 inch high-definition IPS capacitive touch screen (resolution 800 * 480)

Computer online: supported

Automatic shutdown: supported (automatic shutdown time can be set by oneself)

Language: Chinese/English

Voice switch: can be set independently

Backlight adjustment: supported

Date display and settings: supported

Bluetooth printer: standard configuration

Color recognition; Standard configuration

Open light path: support

Data correction: supported

Charging method: 220VAC 50HZ; DC8.4V

Power supply: lithium battery (6600mAh)

Protection level: IP54

Operating temperature: -15 ° C~+50 ° C

Storage temperature: -30 ° C~+85 ° C

Operating humidity: 10~90%, no condensation

Volume (length x width x height): 355mm * 132mm * 150mm

Net weight: 3.6kg

Packaging box: Plastic instrument box