Table of Contents
Related Manuals for Delta LTL-XL
Summary of Contents for Delta LTL-XL
- Page 1 LTL-XL RETROREFLECTOMETER Manual On site quality control of road markings & road surfaces in accordance with CEN / ASTM specifications DELTA · Venlighedsvej 4 · 2970 Hørsholm · Denmark · Tel. +45 72 19 40 00 · roadsensors@delta.dk...
- Page 2 ANY KIND WITH REGARD TO THIS MATERIAL, INCLUD- ING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICU- LAR PURPOSE. DELTA LIGHT & OPTICS SHALL NOT BE LIABLE FOR ERRORS CONTAINED HEREIN OR FOR INCIDENTAL...
- Page 3 DELTA LTL-XL Retroreflectometer...
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Page 5: Table Of Contents
LTL-XL introduction ..........................7 LTL-XL retroreflectometer features ......................8 Options ..............................8 Getting started ............................9 Important guide lines for the correct use of the LTL-XL ............... 12 SECTION 2 ..........................13 GENERAL INFORMATION ......................13 Measurements ............................13 Notes on error sources ..........................13 High temperature conditions. - Page 6 COMMUNICATION FACILITIES ....................45 RSC software program ..........................45 APPENDIX B .......................... 46 SPECIFICATION ........................... 46 General characteristics ..........................46 Environmental characteristics ......................... 47 Mechanical characteristics ........................47 APPENDIX C .......................... 48 DELIVERY ............................. 48 Visit our web-site “www.roadsensors.com” LTL-XL Retroreflectometer DELTA...
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Page 7: Section 1
SECTION 1 OPERATING INFORMATION LTL-XL introduction The LTL-XL retroreflectometer is a portable field instrument intended for measuring the retroreflection and reflection properties of road markings. LTL-XL measures the R value (coefficient of retroreflected luminance at night) and the Qd value (day light visibility). R a measure of the lightness of the road marking as seen by drivers of motorized vehicles in car headlight illumination. -
Page 8: Ltl-Xl Retroreflectometer Features
) allows for data exchange with other PC programs. A rechargeable NiMH (Nickel-Metal Hydride) standard battery powers the LTL-XL, allowing approx. 1,100 measurements on a new and fully charged battery. The optional high capacity battery can provide approx. 2,500 measurements. A mains powered 15V power adaptor for charging is supplied as customary delivery. -
Page 9: Getting Started
Figure 2. Buttons Height adjustment (optional) Before using the LTL-XL, notice that the operating panel can be adjusted in height for er- gonomic considerations. The height is adjusted by pressing the red knob on the front of the instrument and at the same time lifting the handle on the operating panel. Release the knob and continue lifting until the handle locks. - Page 10 • Repeat the calibration process for the other quantity (R , Qd) The calibration procedure is now complete. Remove the calibration unit and store it properly. pg. 41 Press to return to the measurement display. For further details see LTL-XL Retroreflectometer DELTA...
- Page 11 Errors and warnings An error or warning icon will appear in the upper row of the display if the LTL-XL detects button ▲ to get a description of the most serious error or warning. a problem. Press the button ▲ to get a description of the most serious error or warning. Now press...
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Page 12: Important Guide Lines For The Correct Use Of The Ltl-Xl
Make sure that the instrument is stable positioned. Reason: The LTL-XL has three support pads, each with a small footprint, two smaller in the front and one larger at the back. An uneven marking or a small piece of gravel trapped below one of the pads will move the measurement field and affect the reading. -
Page 13: Section 2
It is very important to keep the dust-protection window and the ceramic on the calibration unit clean. 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. -
Page 14: High Temperature Conditions
"Daylight readable" displays are vulnerable to high tem- peratures. 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 LTL-XL Retroreflectometer DELTA... -
Page 15: Section 3
• User ID selection, can be switched off (see pg. 19 • Error/warning alarm. Will be shown in case of an error/warning (see pg. 36 • GPS indication (see pg. 24 • Battery status (see pg. 39 DELTA LTL-X Mark II Retroreflectometer... -
Page 16: Lower Icon Row
The button turns the instrument ON or OFF and enters the standby mode. Press the button to turn the instrument ON. The start-up time is ~10 seconds when the LTL-XL is turned OFF. If the LTL-XL is in standby it turns on within 1 second. - Page 17 This button starts the calibration wizard, see PRINT Print out the last measurement or selected parts of the log to the (optional) printer. In the di- agnostics menu you can print out different instrument information’s. DELTA LTL-X Mark II Retroreflectometer...
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Page 18: The Menu Tree
HELP ON SERIES SELECT ROAD MARKING SELECT HELP ON USER SELECT HELP ON EDITING HELP ON AVERAGING HELP ON GPS HELP ON SETTINGS MENU HELP ON SERIES-ID MENU HELP ON LOG MENU Figure: 5 – The menu tree LTL-XL Retroreflectometer DELTA... -
Page 19: Setting Up For Measurements
If a user select icon is seen in the upper icon row: LEFT RIGHT Press the button. Then, if necessary use the button to highlight the user button. The USER menu is shown: icon. Press the DELTA LTL-X Mark II Retroreflectometer... - Page 20 Deleting the User ID will remove the user and settings from the memory. Select at start Enabling SEL. AT START will force the user to select a user ID each time the LTL-XL is turned on. Press the MENU button and select SEL. AT START. Press OK to toggle between YES and...
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Page 21: Selecting A Road Marking Icon
Setting the time format when TIME FORMAT is highlighted and scroll between 12 and 24 hr format by push- Press ing the OK button. Setting the date format Navigate to DATE FORMAT and push OK DELTA LTL-XL Retroreflectometer... -
Page 22: Setting The Dimmer And Back Light (Display)
ON and OFF. By activating this function make sure that the time zone is correct otherwise the clock in the LTL-XL and the time stamp in the log data will probably not be correct. Setting the dimmer and back light (Display) -
Page 23: Setting The Sound Level
(OFF). Press the ON/OFF button to wake up from sleep/standby. button and select SETTINGS / POWER / AUTO SLEEP. Use MENU DOWN Press the edit the auto turn sleep time. Press OK, LEFT or BACK to accept. DELTA LTL-XL Retroreflectometer... -
Page 24: Auto Off (Power)
(OFF). Press OK, LEFT or BACK to accept. The LTL-XL will not turn off when either the power supply or a PC is connected. When communicating with RSC program or when the power supply is connected the instru- ment will not power down automatically. - Page 25 The GPS unit will typically acquire satellite signals and process a position fix in 1-15 seconds after the LTL-XL is turned on. If the GPS receiver has been turned off for a long period of time or the instrument has been moved far away for its last position, the time to first fix will take longer.
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Page 26: Setup (Basic And Advanced)
A HDOP value <1 indicates a high precision position. HDOP signals between 1 and 5 indi- cates an fair precision and DHOP values >5 a poor precision When the GPS is used, the operating time for the LTL-XL is slightly decreased and you may have to charge the battery more often. -
Page 27: Measure Type
15 and 60 seconds. The wet timer automatically carries out the measurement or sound an alarm after the set period of time. Timer Alarm Toggle between “Measure” or “Alarm”. The selected option is used when wet timer times out. DELTA LTL-XL Retroreflectometer... -
Page 28: Series Id
. If necessary, use the button to highlight the button. The SERIES ID menu is shown. Choose SELECT to ac- road icon . Press the cess the available series ID. Press the button to accept the name. LTL-XL Retroreflectometer DELTA... -
Page 29: Enter A New Series Id
Six of the 24 road marking icons can be programmed as individual presets for each series ID MENU and will be ready for selection when a series ID is selected. Press the button and select SERIES-ID / PRESET ROAD MARKINGS to enter the SELECT MARKING menu: DELTA LTL-XL Retroreflectometer... - Page 30 (frame) will move to the second icon. Repeat for all six icons and the programming is done. You can amend at any point by pressing the BACK button and start over again. Press the BACK button to save. LTL-XL Retroreflectometer DELTA...
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Page 31: The Log
• all measurements • one of the series By pressing the button you will be asked to confirm the erasure of the data. By pressing LEFT data will be cleared. By pressing they will not be cleared. DELTA LTL-XL Retroreflectometer... -
Page 32: Viewing The Log
In the first line, the menu shows the R and Qd value, thereafter in the following lines other key measurement data. To view a list of the individual errors/warnings in the status, print out the measurement (see below). LTL-XL Retroreflectometer DELTA... -
Page 33: View Series Data
The LTL-XL log is not intended for data storage. Even if the log may store up to 200.000 measurements an increasing number of logged measurements will gradually slow down the performance of the LTL-XL. -
Page 34: Other Settings
The default setting is 4. RESET: Select RESET and press the button to reset the calculated average value and reset the number of measurements included in the average to zero. LTL-XL Retroreflectometer DELTA... -
Page 35: Editing Names
DOWN present a general help menu in which you can highlight a subject by using the button and the press the button to show the help text. The HELP section is also accessible on the main menu. DELTA LTL-XL Retroreflectometer... -
Page 36: Errors And Warnings
RSC software program Main features of the RSC (Road Sensor Control) software program delivered together with the LTL-XL: • Transfer of log data to a PC • Export of log data to other programs e.g. spread sheets •... -
Page 37: Section 4
The LTL-XL retroreflectometer is constructed for outdoor use in ordinary good weather con- ditions. It will stand moist weather with wet roads, but caution must be taken against heavy rain and dirt. The LTL-XL retroreflectometer is an optical instrument and shall be handled as such. Avoid shock and vibration if possible. - Page 38 A depleted battery will not hold a charge very long, and it should be replaced. This can be done by the user. Notes: Always turn off LTL-XL before removing the battery to make sure that the processor is shut down properly. Disconnecting the battery for a longer period of time can reset the internal clock in the instrument.
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Page 39: Fuses
Pull out the fuse from the cap and insert the new one and reassemble Charger fuse Main fuse Lamp The lamps are maintenance free LED lamps. Only trained personnel should replace the lamps if damaged. DELTA LTL-XL Retroreflectometer... -
Page 40: Calibration Unit
DELTA offers calibration traceable to PTB (Physikalsich-Technische Bundesanstalt, Germany) and NIST (National Institute of Standards and Technology, USA). For information in service please contact your distributor or DELTA directly. At DELTA you can forward your request via our web-site www.roadsensors.com or send a mail directly to: roadsensors@delta.dk. -
Page 41: Calibration
Place the instrument upon the calibration unit and pull back until the pins at the back and front of the LTL-XL are in place, see figure 7. Please be very careful when you place the instrument on the calibration plate not to damage the calibration unit and / or the light diodes once. - Page 42 The instrument automatically compensates for zero signals, leakage and other known errors, and calculates a calibration factor. Always store the calibration unit in a dry, dust free and clean environment. If stained, scratched or broken it must be replaced. LTL-XL Retroreflectometer DELTA...
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Page 43: Printer (Optional)
Pull the lever out with your finger and the cover will open into the paper roll compartment. Insert the new paper roll and let a short paper tail hanging out at the top. Close the cover with a firm push and with some of the paper sticking out. DELTA LTL-XL Retroreflectometer... -
Page 44: Mounting The Wheel Unit (Option)
A wheel unit can be mounted in the rear of the instrument for easy transportation during heavy use. The wheels are mounted easily to the rear by fastening the two nuts mounted on the wheel block. Nuts for fasten the wheels Figure: 8 – Wheel fastening nuts LTL-XL Retroreflectometer DELTA... -
Page 45: Communication Facilities
APPENDIX A COMMUNICATION FACILITIES The LTL-XL is equipped with a USB host port and a USB device port. The USB host port can be used to connect to a USB memory stick, e.g. for software updates. The USB device port is used to connect the instrument to a PC. -
Page 46: Specification
Charging time, standard battery ............Approx. 1 hour 30 min Charging time, high capacity battery ..........Approx. 3 hour 30 min Charger fuse (5*20 mm) ..................T3.15A Power supply fuse (5*20 mm) ................. T3.15A Data memory ..................>200.000 measurements Data transfer ........................ USB 2.0 LTL-XL Retroreflectometer DELTA... -
Page 47: Environmental Characteristics
Weight of base unit .................... 7 kg / 15.5 lbs Construction: Structural parts ....................Aluminum Housing ........................Polymer Keyboard ...................... Silicone rubber Circuit boards ....................Epoxy glass Printer: Thermal paper ........width/dia. 57.5 ±0.5 mm / 31mm (2.26 in / 1.22in) DELTA LTL-XL Retroreflectometer... -
Page 48: Delivery
APPENDIX C DELIVERY LTL-XL Retroreflectometer DELTA...