LTL-X RETROMETER - PowerPoint PPT Presentation

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LTL-X RETROMETER

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Title: LTL-X RETROMETER

1
LTL-X RETROMETER

OPERATION
AND
MAINTENANCE

2
THE LTL-X RETROMETER
3
DISPLAY SCREEN
4
DISPLAY SCREEN SCHEMATIC
5
GETTING STARTED

BATTERY
Make sure battery (12v/1.3Ah NiMH) is fully
charged using the external charger power supply
(100-240 VAC/12VDC).
Battery and fuses available through Flint Trading
Co. (336) 475-6600.

PLUG INTO WALL OUTLET
PLUG INTO LTL-X
6
Battery charger power supply(PLUGGED INTO MAINS
AND LTL-X)

Display will show a moving text that explains the
charging state.
ex.) Charging/Charging done
Battery icon in the upper right corner of the
display screen will also indicate the charging
state.

Charger in outlet
Charger in LTL-X
7
DISPLAY AND KEYBOARD LAYOUT
Battery icon
8
CALIBRATION

CALIBRATE EACH DAY BEFORE USE
Instrument is supplied with two (2) calibration
units, a reference calibration unit (black), and
a field calibration unit (red).

FIELD UNIT
REFERENCE UNIT
9
CALIBRATION

The black reference calibration unit is factory
calibrated and traceable to PTB
(Physikalsich-Technishe Bundesanstalt). This unit
is used to perform the zero calibration and the
reference calibration on the LTL-X.
The field calibration unit is used to perform
calibrations in the field when measurements are
questionable. This unit is calibrated against the
black reference unit.

10
ZERO CALIBRATION

Mount the reference calibration unit underneath
the front end of the instrument with the white
ceramic end of the unit facing out away from the
instrument tower.

11
ZERO CALIBRATION

Make sure the pins on the sides of the
calibration unit fit into the slots in the LTL-X.

12
ZERO CALIBRATION

Press the ON button.
Press the CALIBRATION button to start the zero
calibration. Follow the instructions on the
screen.

ON BUTTON
CALIBRATE BUTTON
13
ZERO CALIBRATION

At the end of the zero calibration use the UP and
DOWN buttons to adjust the number on the screen
to match the number on the label of the reference
unit.

14
ZERO CALIBRATION

The number 147 on the label of the reference
unit.

15
REFERENCE CALIBRATION

After the zero calibration the instrument is
ready for the reference calibration.
The display will tell you to turn the calibration
unit so that the ceramic (white) side faces the
instrument tower.

White ceramic plate
16
REFERENCE CALIBRATION

Press the OK button to start the reference
calibration.

17
REFERENCE CALIBRATION

The end of the reference calibration is announced
on the display screen.
Press the HOME button to return to the
measurement display.

End of the reference calibration noted on the
screen.
18
FIELD REFERENCE UNIT

When calibration is necessary during on site
measurements, use the field calibration unit
(red).
To use the field calibration unit, an R1 value
must be obtained that links the field unit to the
reference calibration unit. The reference unit is
linked to a traceable standard.
To get the R1 value for the label of the field
calibration unit
1.) Perform a reference calibration on the LTL-X
using the reference (black ) calibration unit.
2.) Replace the reference unit with the field
calibration unit and take a measurement to obtain
an R1 value reading.
3.) Label the field calibration unit with the R1
value and date.

19
TAKING A MEASUREMENT(There will be a
demonstration given)

Select a level area of the pavement marking to be
measured.
Make sure the area is free of debris.
Place the LTL-X on the road marking.
Press the OK button. The R1 value will be
displayed in approximately 1 second.

R1 VALUE
20
TAKING A MEASUREMENT(A few things to remember)

Do not put pressure on the handle as this will
effect the measurement geometry.
Be sure there are no obstructions in front of the
instrument for at least 40 inches.
Choose an area free from reflective materials
like raised pavement markers. Be sure there is no
reflective clothing within 40 inches from the
front of the LTL-X.

21
AVERAGING MEASUREMENTS

For accurate readings, do not take just one
reading of a road marking.
Take four readings in adjacent areas of the
marking.
Let the instrument calculate the average of the
readings.
Use the averaging function to obtain the average
R1 value of four (4) calculated measurements. (4
is the default value)

22
AVERAGING FUNCTION OF THE LTL-X

Press the MENU button on the display. Using the
UP and DOWN buttons highlight AVERAGE.

MENU BUTTON
UP BUTTON
DOWN BUTTON
23
AVERAGING

Press the OK button to toggle between AVERAGE ON
and AVERAGE OFF. To select, leave the highlight
on the AVERAGE ON option.
Highlight the TYPE line. Press the OK button to
toggle between MOVING or FIXED. Select MOVING.
To adjust the number of readings to average,
highlight the NUMBER line and press OK. Use the
UP and DOWN buttons to change the value. Set the
number to four (4).
Press the HOME button to return to the
measurement screen.

24
PRINTING RESULTS

Press the MENU button.
Use the UP and DOWN buttons to highlight the
Print/output Int line. This option enables the
instrument to use the built-in printer.
Press the HOME button to return to the
measurement screen.
Use the PRINT/OUT button on the display to print
a measurement.

25
PRINTING RESULTS
PRINT/OUT BUTTON
26
Replacing the printer paper

Use thermal paper roll 57.5mm(2.26 in) wide,
diameter max 31mm (1.22in). Available through
Flint Trading Co. (336) 475-6600
To open the paper roll compartment, pull the
little lever out.
Insert the new roll letting a short paper tail
out at the top.
Close the cover with some of the paper sticking
out.

LEVER
27
MAINTENANCE

GENERAL CARE
Avoid shock and vibration to the instrument.
Keep the instrument clean.
Do not use in heavy rain.
The protection window underneath the instrument
is coated with a highly efficient anti-reflective
coating. Use a fine brush or compressed air to
remove dust and loose particles.

28
MAINTENANCE

BATTERY
LtL-X uses a 12v/1.3Ah NiMH battery.
Keep battery fully charged. Fully charge battery
when storing the instrument for long periods of
time.
When disconnecting the instrument from the
charger, disconnect the charger from the
instrument first and then from the wall outlet.

29
MAINTENANCE

REPLACING THE BATTERY
The battery is located at the lower rear of the
tower.

BATTERY COVER
30
MAINTENANCE

Loosen the screws at the battery cover.
Lift out the battery.
Press the snap-on clip on the connector and
withdraw it from the circuit board.
Replace battery.

SCREWS
31
MAINTENANCE

FUSES
Two fuses are located in the battery compartment.
To change a fuse you need to access the battery
compartment.
Carefully unscrew the plastic cap fuse holder
with e.g. a coin.
Replace the fuse (T3.15A) with a new one and
reassemble. Fuses available through Flint Trading
Co. (336) 475-6600.

32
RSC2 Software for the LTL-X RetrometerRoad
Sensor Control Software