10 LTL-XL Retroreflectometer DELTA
Measurements taken with a low battery warning are marked in the log and a warning icon
appears. If battery voltage gets too low measurements can’t be taken and an error icon ap-
pears.
To print the latest measurement data, press the PRINT button (Requires the printer op-
tion).
User select (user initials)
If a user icon is displayed in the upper icon row on the measuring display, press the UP
button ▲and if necessary ◄ or ► to mark the user icon. Press the OK button to enter the
user select menu. For further information see Selecting a user id, pg. 19.
Series ID select (name)
If a user icon is displayed in the upper icon row on the measuring display press the UP
button ▲to mark the road icon. Press the OK button to enter the Series ID select
menu. Select a name from the list using UP or DOWN and accept with OK or ENTER /
EDIT a new name.
If the icon is not shown or if further information is need, see Series Id, pg. 28
Calibration
The instrument is supplied with a reference calibration unit. The reference calibration unit
is factory calibrated and traceable to PTB (Physicalish-Technische Bundesanstalt, Germa-
ny) and NIST (National Institute of Standards and Technology, USA).
Calibration procedure
Before a calibration is carried out make sure that the calibration unit is clean.
To carry out a calibration go through the following steps:
• Before mounting the calibration unit check the R
L
and Qd values stamped on the cal-
ibration unit.
• Mount the calibration unit underneath the instrument. Make sure that the pins on the
interface plate fit into the holes on the calibration unit. Be very careful when you
place the instrument on the calibration plate not to damage the calibration unit and /
or the light diodes
• Press the CALIBRATION button once. Select R
L
or Qd calibration to calibrate one
at a time.
• Adjust the calibration value shown in the display so it matches the value stamped on
the calibration unit. See the Calibration section for details.
• Press the OK button to finish the calibration. If an error occurs ensure that the
• preceding steps have been taken and try again.
• Repeat the calibration process for the other quantity (R
L
, Qd)
The calibration procedure is now complete. Remove the calibration unit and store it properly.
Press OK to return to the measurement display. For further details see pg. 41
To Next Page
Loading...
Need help?
General
