LTL3000 retroreflectometer
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LTL3000 retroreflectometer features LTL3000 is part of a new generation of DELTA retroreflectometer instruments for measuring retroreflection of road markings. The instrument is based on the latest technological developments and with modern design and materials. LTL3000 is, like all other DELTA instruments, very easy to calibrate and operate, we like to say “very user-friendly”. And the instrument is of course robust and long lasting – like our earlier generations of road marking retroreflectometers – and on top of this small in size (420 x 300 x 150 mm / 16.5 x 11.8 x 5.9 inch) and light in weight (4.7 kg / 10.4 lbs.). LTL3000 is primarily intended for users who need an instrument for less demanding measurement programs, who want an instrument which is easy to transport and who do not need many features to support the measurements. The instrument complies with international standards like: EN 1436, ASTM E 1710, ASTM E 2177, ASTM E 2302, ASTM E 2367. General features Measurement time less than 1 sec for both RL and Qd Measures RL on profiled markings up to 15 mm / 0.6 inch Memory capacity more than 1 mio. measurements Multiple language Easy-readable color touch LED display with 3 buttons Long-life illumination system USB memory stick interface Power supply, standard Bosch professional battery Stray light compensated Single handed operation, user-friendly Shows and stores day and time Facility for entering and storing road ID and user ID Data presentation in MS Excel format Optional features LTL3000 measure all types of road markings at a simulated distance of 30 m with a high accuracy. The instrument operates with a reproducibility of +/- 5 % and a repeatability of +/- 2 %. LTL3000 measures Qd (daytime visibility) and RL (nighttime visibility) under dry and wet conditions. LTL3000 measures RL from 0 to 4.000 mcd/lx/sqm and Qd from 0 to 318 mcd/lx/sqm. LTL3000 can in addition measure nighttime chromaticity coordinates (x,y) according to ASTM E 2367 and CIE 1931. LTL3000 has automatic stray light compensation. Daylight and other outside light sources will not affect the accuracy of the measurements. LTL3000 measurements can be exported to commonly available software like MS-Excel format. Calibration standards LTL3000 instruments are for RL calibrated by DELTA in our DANAKaccredited laboratory in accordance with ISO 17025 and assuring traceability to PTB (Physikalish-Technische Bundesanstalt, Germany) and NIST (National Institute of Standards and Technology, USA). LTL3000 is delivered factory calibrated for Qd. This calibration is sufficient to achieve correct field measurements. If 100% correct Qd measurements are required a separate laboratory calibration reference can be purchased. 5218.3 · RL and Qd for dry & wet markings (RL is standard delivery, Qd is optional) · GNSS positioning · Nighttime color (x,y) for RL measurements

The recommended daily calibration of the instruments is fast and easy to carry out. Color coordinates (x,y) LTL3000 measures night time retroreflected color - CIE chromaticity - for white and yellow markings according to EN1436 and ASTM D6628 Contact and further information For further information about DELTA's LTL3000 retroreflectometer please contact: Kjeld Aabye Market Manager Phone +45 72 19 46 30 kaa@delta.dk roadsensors.com DELTA - a part of FORCE Technology Venlighedsvej 4 2970 H0rsholm Denmark Tel. +45 72 19 40 00 roadsensors@delta.dk roadsensors.com