The LTL-X retroreflectometer is a portable field instrument intended for measuring the retroreflection properties of road markings in car headlight illumination, the value RL(coefficient of retroreflected luminescence) is used. RLis a measure of the lightness of the road markin as seen by drivers of motorized vehicles in car headlight illumination. The road is illuminated at an angle of 1.24
and the reflected light is measured at an angle of 2.29, which corresponds, to an observation distance of 30 meters. This is relevant for a motorist’s
viewing situation under normal conditions.
The operation of the retrometer is very simple and requires minimal instruction.
The LTL-X measures the retroreflectivity and calculates RL according to international agreements. Results are presented in plain text on a large graphic display. Error messages or warnings are shown in the display in case of any problems during use.
The built-in printer and memory provides registration of measurements with corresponding
date and time and other important data. The following data is also registered (if enabled):RL is an important factor in the ON-SITE
quality control of road markings.
LTL-X Mark II and LTL-XL Handheld Retroreflectometers for Pavement Markings
DELTAs new LTL-X is the reference instrument of tomorrow. The LTL-X measures the retro reflection of pavement markings at a simulated distance of 30 m according to CEN and ASTM standards. ... Reliability and repeat-ability are not just words reserved for laboratory tests on artificial, measurement “friendly” samples.
LTL-X retroreflectometer features
Portable self-contained instrument
Small dimensions / low weight
Ergonomic operation height
Fast measurement (completed in less than 1 sec)
Measuring on dry and wet surfaces (or the continuous wetting measurement
Will measure flat, textured & profiled markings
Built-in thermal printer
Fully documented measurements with automatic dat
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