Description
Product Parameter
- Measurement items: retroreflective coefficient mcd.m-2.lx-1
- Measurement range: 0—4000
- Observation angle: 1.05°
- Angle of incidence: 88.76°, Complementary angle is 1.24°
- Light source color temperature: 2856±50K
- Measuring aperture area: 340mm x 95mm
- Error of repeatability measurement: ≤3%
- Continuous working time of battery: ＞72h
- Data storage space: 8GB
- Built-in battery capacity: 13Ah
- Charger: DC 8.4V
- Ambient temperature: -15℃~+60℃
- Ambient humidity: ＜98%, no frost
- Instrument size: 700mm x 135mm x 115mm
ES-308P Upgrade Points
- Using the latest international algorithm;
- Other color reticle can be measured simply by calibrating white;
- No yellow calibration plate is needed, only the white calibration plate can be used to measure all colors (the inverse value of the color road can also be measured);
- Using the latest high-brightness screen technology, you can see the screen clearly without fear of direct sunlight;
- Split printer, reduce power consumption and avoid after-sales problems such as motherboard damage;
- Imported sensor;
- One-key measurement, with calibration memory function, no need to repeat calibration within a week;
- 5-inch high-brightness touch screen, easy to read detection data in strong sunlight environment;
- Ultra-long standby time, and supports fast charging;
- Real-time display of temperature and humidity;
- USB data interface, the test report can be exported to the computer in the form of database
- Touch the keyboard to input Chinese characters, English and characters. The system can switch to English mode with one key.
- Real-time voice broadcast of measurement data;
- Bluetooth printing
Product Display
Working Principle
The geometric condition of LA-302D-type marking retroreflectometer is to simulate the brightness that the driver observes in the cab reflected from the marking made of retroreflective material on the road by the headlamp when the vehicle is driven on the road at night. The schematic diagram of the optical path is shown in Fig. 2.
The angle between the optical axis of the headlamp and the normal line (reference axis) of the road surface is called the incidence angle, which is set at 88.76° and the angle between the optical axis of the headlamp and the reflected light is called the observation angle, which is set at 1.05°. The light source of the optical system is directed to the marking line according to the incident angle. The size of measurement window is 340 x 95mm. The reflected light from the marking line is received by the V(λ) filter at the observation angle of 1.05°. After signal processing and calculation, the measured value is displayed. This value is the value of retroreflection coefficient RL.
Application Circumstances
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