Delta LTL3000 User manual

DELTA - Venlighedsvej 4 - DK-2970 Hørsholm - Denmark - Tel. [phone] - [email protected]
LTL3000 Retroreflectometer
User Manual
June 2020 –English language version

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USA Statement
Note:
LTL3000 has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a particular installation. If
this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/TV technician for help.
Canada Statement
Note:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a residen-
tial area is likely to cause harmful interference in which case the user will be required to correct the
interference at his/her own expense.

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Disclaimer
The information contained in this document is subject to change without notice.
DELTA MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICU-LAR PURPOSE. DELTA SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR
INCIDENTAL OR CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE FURNISHING,
PERFORMANCE OR USE OF THIS MATERIAL.
LTL3000 IS BUILT ON GENERAL PUBLIC LICENSE COMPONENTS. THE SOURCE CODE IS AVAILABLE
UPON REQUEST.
Intended use/purpose
LTL3000 retroreflectometer is a portable field instrument used for on-site inspection and quality control of
retroreflection properties of road markings.
Important Safety and Handling Information
Caution
Changes/modifications not approved by the responsible party could void the user’s authority to operate the
equipment.
Use the unit only in the way described in this manual. Failure to follow the guidelines and instructions in this
manual may be dangerous and illegal.
LTL3000 may not be used with other batteries than those supplied with the product.
Disposal and Recycling Information
Please ask your appointed dealer concerning disposal of LTL3000 in your country.
Visit our website: http://roadsensors.madebydelta.com/

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Table of Contents
LTL3000 introduction........................................................................................................................... 8
Overview of the LTL3000..................................................................................................................... 8
Getting started .................................................................................................................................... 9
Icons ................................................................................................................................................ 10
Main menu........................................................................................................................................ 11
Perform a measurement .................................................................................................................... 12
Series............................................................................................................................................... 13
Users................................................................................................................................................ 14
Log................................................................................................................................................... 15
Calibration ........................................................................................................................................ 16
Settings ............................................................................................................................................ 19
Battery.............................................................................................................................................. 20
Battery charger.................................................................................................................................. 21
USB connection ................................................................................................................................ 22
Maintenance ..................................................................................................................................... 23
Appendix A: Specifications .................................................................................................................... 25
General characteristics ...................................................................................................................... 25
Electrical characteristics..................................................................................................................... 26
Environmental specifications.............................................................................................................. 26
Instrument dimensions....................................................................................................................... 26
Regulatory compliance ...................................................................................................................... 27
Appendix B: Safety symbols and model identification .............................................................................. 28

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LTL3000 introduction
The LTL3000 retroreflectometer is a portable field instrument intended for measuring the retroreflection and
reflection properties of road markings.
LTL3000 measures the RL value (coefficient of retroreflected luminance at night) and the Qd value (day light
visibility). RL is a measure of the lightness of the road marking as seen by drivers of motorized vehicles in
car headlight illumination. The road is illuminated at an angle of 1.24°. The illumination for Qd is diffuse. The
reflected light for both RL and Qd 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. Further
information on measuring principles and standards can be found on https://roadsensors.madebydelta.com/.
LTL3000 measures RL (nighttime visibility) and Qd (daytime visibility) under dry and wet conditions. LTL3000
measures RL from 0 to 4000 mcd·m-2·lx-1 and Qd from 0 to 318 mcd·m-2·lx-1. LTL3000 can in addition
measure nighttime chromaticity coordinates (x,y).
LTL3000 has automatic ambient light compensation. Daylight and other outside light sources will not affect
the accuracy of the measurements.
Overview of the LTL3000
The LTL3000 retroreflectometer is easy to operate and requires a minimum of instructions.
The measurement results are presented on the instrument’s touch screen. Each measurement can be linked
to a user/operator name and a series name.
The instrument provides a warning message or sound in case of unreliable measurement.
The majority of action buttons on the LTL3000 are accessible via the touch screen. The physical buttons and
features on the instrument are shown below.
Front and side of the LTL3000:

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The center of the measurement field length (190 mm / 7.6 inch) is marked with a black arrow on the body of
the instrument. The width of the measurement field (50 mm / 2 inch) is centered.
The LTL3000 is equipped with a USB port on the side of the instrument for data export via a memory stick.
The instrument is powered by a rechargeable battery, offering many hours of measurement capacity. A
mains powered battery charger is supplied with the instrument as customary delivery.
Getting started
Insert battery: before using the LTL3000 instrument make sure that the battery is charged and inserted in
the battery slot on the side of the instrument.
Turn on: press the green button on the handle of the LTL3000 instrument. After 10-15 seconds, the system
has booted, and the instrument is ready for use.
Stand-by: the LTL3000 automatically switches to stand-by mode if the instrument has not been used for a
specific amount of time. From stand-by mode the instrument is instantly ready when pressing the green
button on the handle.
Calibrate: to ensure high quality of data we recommend that you perform an RL calibration of the instrument
every day the instrument is in use, typically in the morning before commencing the measurements (see how
in the section named ‘Calibration’ in this manual).
The Qd (optional feature) measurement system is factory calibrated and regular calibration is not necessary.
Switch off: press the X-button on the handle of the LTL3000 and then press ‘Shutdown’ in the menu on the
touch screen, and the instrument will switch off. Note: if not properly switched off, the instrument will continue
to consume battery in standby mode.

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Icons
The icons in the status bar at the top of the display screen give you information about the instrument status
and operational mode:
Icon explanation:
The current time (hour/min)
USB drive is connected and accepted
GNSS-signal is activated i.e. Global Navigation Satellite System
(optional feature)
Battery status