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T: 514-354-2511
T: 1 800 463-4363
F: 514-354-6948
Retroreflectometer Material Testing


Product Code:ZRP 6030 R

Need more Info? (514) 354-2511 - 1-800-463-4363

  • Determination of the retroreflection value R, the ambient temperature as well as relative humidity combined in one compact instrument.
  • For all types of road studs - depressible, bonded, self-adhesive, anchored, permanent of temporary - at any time of the day or night.
  • With intelligent memory, interfaces for PC and printer.
  •   High long-term stability ensures constant measuring accuracy and thus reliable measuring results. Possible deviations caused by damages or soiling of the calibration standard or the equipment will be shown automatically.
The Zehntner-retroreflectometer simulates the conditions under which road studs are seen at night (R) by a vehicle driver driving with dipped headlights. This renders an objective determination of retroreflection possible. 


Application areas
  • for national road authorities, road laboratories, manufacturers of road marking materials, contractors and expert witness
  • control of road studs after fixing and during the warranty period
  • decision on required renewal


  • with a press of the button several values
  • menu-guided in several languages, easy to operate•
  • PC and printer download, printout of a detailed test report on an A4 size paper with an office or portable printer
  • off-the-line operation owing to built-in powerful accumulator, for 400 measurements per day, the accumulator has to be recharged only once a month
  • LED with high life time (over 500'000 measurements)
  • automatic lightness supervision and correction
  • automatic calibration using the supplied standard
  • free software update and program for PC (Retro Tools software). Retro tools is available for Windows 98 SP1, NT 4.0 SP5, 2000 SP2 and XP versions. In addition, the Internet Explorer 4.01 or higher is required
  • data transfer to Microsoft Excel for statistics
  • optional availability of wheels, remote control incl. adjustable handle as well as a GPS unit for a higher user convenience in the field; without tools easily to mount and to remove


Standard extent of delivery
  • 1 retroreflectometer
  • 1 calibration standard
  • 1 universal battery charger (100-240 V, 50-60 Hz)
  • 1 CD with Retro Tool software
  • 1 certificate of manufacturer
  • 1 certificate of calibration
  • 1 carrying case with wheels


  • ACC 178 wheels and remote control incl, handle
  • ACC 034 portable printer
  • ACC 018 GPS unit (Global Positioning System) 
  • ACC 097 data transfer cable USB
  • Fugawi 3 GPS Mapping Software 
  • ACC 169 bluetooth communication adapter


Technical specification
version observation angle illumination angle
ZRP 6030.2 0.2°
ZRP 6030.3 0.3°
measuring area (WxH) 130 mm x 30 mm
measuring range 0 to 2'000 mcd•lx
memory over 1'000 single or mean values
display graphical display, background-lighted
accumulator LI-Ion-Mn 14,8 V / 4.8 Ah
dimensions (LxWxH) 560 mm x 190 mm x 280 mm
max. road studs : 140 x 160 x 60 mm
weight 7,1 kg / 8,4 kg incl. remote control
standards  ASTM E 1696-02


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