Specifications
14 LTL-XL Retroreflectometer DELTA
The LTL-XL illumination angle is 1.24° relative to the road surface. Because of this small
angle accurate placement on the road is important. Avoid pebbles and abnormal irregularities.
The LTL-XL must be parallel and in contact with the marking surface.
The LTL-XL retroreflectometer is a rugged instrument, but it is an optical instrument and
must be handled as such.
The LTL-XL is factory calibrated. Nevertheless start measurements with a calibration. Study
the display for any warning or error icons. See also Section 4 - Maintenance
Note
High temperature conditions.
Display
If the display is exposed to intense direct sunlight during a longer period of time the display
could become overheated. It is recommended to close the protective display shield. The shield
also protects against damages and scratches. "Daylight readable" displays are vulnerable to
high temperatures. High temperature will decrease the display service life.
Battery
The battery is rated to operate between 0C / 32F and 45C / 113F.
Fig 3. LTL-XL, the inside
Keep the dust-protection window and ceramics on the
calibration unit clean.
Keep the battery fully charged. A well charged battery is
more resistant to aging and damage.