Road Markings Retroreflectometer for Rainy Night and Nighttime with
Open Optical Path
Marking Line retroflectometer (rainy night version) is a portable
on-site measuring instrument with an open optical path, used to
measure the retroreflection brightness coefficient of the line.
(Unit: mcd/(㎡.lx). The main characteristic of its research is to
simulate a motor vehicle driving on a highway at night, and the
brightness of the markings (made of retroreflective
materials)illuminated by the headlights on the road surface is
observed by the driver in the cab after reflection. The measured
parameter is the nighttime retroreflective brightness coefficient,
RL vaule. This instrument can measure the backscatter brightness
coefficient of the marking under three conditions: RL dry, RL wet,
and RL continuous rainfall. To support the Qd measurement mode, the
Qd component needs to be selected.
Main Features
① Open optical path, free from external light interference during
measurement
② Supports storing over 200000 pieces of deterction data
information
③ Support measurement under dry, humid, and continuous rainfall
conditions
④ Support for vibration marking measurement
⑤ Highlight display screen, visible outdoors
⑥ Real time voice broadcasting of measurement data, on-site
printing of detection data
⑦ Ceramic calibration block
⑧ USB data interface, supporting one click Excel data export
MAIN PARAMETERS
| Measurement Items | Retroreflection brightness coefficient |
| Measuring range | 0-4000mcd/(㎡.lx) |
| Viewing range | 1.05º |
| Incident angle | 88.76º, the complementary angle is 1.24º |
| Color temperature | 2856±50K Open Light Path |
| Repeatability measurement error | ≤2% |
| Dry mode | Support |
| Wet mode | Support |
| Continuous rainfall mode | Support |
| Day Mode(QD) | Support (Optional) |
| Data storage space | 16G (more than 200000 test data) |
| Overall volume | 380mm×134mm×170mm |
| Net weight | 4.3kg |
| Bulit-in battery capacity | 13Ah |
| Charging power supply | DC8.4V |
| Battery continuous working time | >72h |
| Operating environment temperature | <98% no frost |
Compliant with Specifications
◎ ASTM E1710(RL)
◎ ASTM E2177(RLwet)
◎ ASTM E2367(RL)
◎ ASTM E2832-12
Operation panel and basic operations
● The on/off key
● is used to turn the instrument on/off.
● When turning on the instrument, press this key for 5-6 seconds,
the display will light up, and there will be a beep sound, and the
instrument will turn on;
● when turning off the instrument, press this key to turn off the
instrument.
● Note: When the instrument is turned off, it can be charged through
the standard charger.
● The detection button
● is used to trigger operations during measurement.
Press this key and the instrument starts testing.
● The display screen
● is used to display various status and data information when the
instrument is working. It can also perform system settings,
measurement calibration, and record transmission of the instrument.
● USB interface
● connects the instrument and the computer to transmit data
information to each other through the USB interface.
● The charging jack
● is used to charge the instrument.
【Notice】
(1) The instrument uses advanced optical filters to achieve Vλ
spectrum correction.
(2) The optical system of the instrument is open. External light
will enter the instrument normally, but it will not affect the
normal measurement in progress.
(3) The light leakage, light drift and offset error of the
instrument are compensated based on the data obtained by the
calibration procedure. Therefore, it is necessary to focus on
ensuring that the calibration plate is clean and calibrated
regularly.
