Delta PG-40 Spezifikationen Seite 41

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DELTA LTL-X Retrometer 41
SECTION 4
MAINTENANCE
General care
The retrometer is constructed for outdoor use in ordinary good weather conditions. It will
stand moist weather with wet roads, but caution must be taken against heavy rain and dirt.
The LTL-X retrometer is an optical instrument and shall be handled as such. Avoid shock and
vibration if possible.
CAUTION!
Protection window
The protection window is accessible from underneath of the instrument. The protection win-
dow is coated with a high-efficiency anti-reflection coating. Take care not to damage this
coating when cleaning. Compressed air or a fine brush can be used for removing loose parti-
cles/dust. If this is not sufficient the window should by cleaned using a soft paper tissue or
cloth and some window cleaning liquid.
Battery
The LTL-X retrometer is powered by a 12V NiMH battery. Under normal use, this battery
requires no maintenance. However it is recommended to keep the battery fully charged. A ful-
ly charged battery is more capable of withstanding degeneration.
A battery charger power supply is provided as a standard accessory for charging the battery
from mains. The output cable of the charger is equipped with a connector matching the con-
nector in the instrument. Connect the charger to an outlet and the instrument.
If the instrument was turned off the display will now show a moving text that explains the
charging state (Charging/Trickle charging/Charging done/Is Charged and Charge Error). The
battery icon in the upper right corner will also indicate the charging state.
No harm will result from leaving the charger connected after the charging process. However,
the instrument must be disconnected from the charger when disconnecting the battery from
the wall outlet.
In addition, the battery can be charged using any DC supply from 12-18 V. such as a car bat-
tery by using an inverter.
When storing the instrument for a long period of time fully charge the battery.
It is possible to install a larger battery pack to increase the operating time for the instrument.
This is also recommended when using a GPS.
To reduce the risk of electrical shock, do not remove the cover.
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