Skip to main content

Reflective values from DELTA

Danish company DELTA is introducing its new RetroSign GR3 Retroreflectometer for quality control and asset management of road signs and retroreflective materials with laboratory precision. The company says that to achieve these goals the triple geometry retroreflectometer is offered with GPS and RFID (radio frequency identification) reader.
March 16, 2012 Read time: 2 mins
Danish company 199 Delta is introducing its new RetroSign GR3 Retroreflectometer for quality control and asset management of road signs and retroreflective materials with laboratory precision.

The company says that to achieve these goals the triple geometry retroreflectometer is offered with GPS and RFID (radio frequency identification) reader.

The handheld instrument is used for measuring the retroreflection of traffic signs. It measures the coefficient of retroreflection (RA) according to US and European standards.

"The triple geometry facilitates simultaneous measurements at various observation angles as proposed by ASTM (The 3930 American Society for Testing and Materials). The RetroSign GR3 measures simultaneously at observation angles at 0.2/0.33º, 0.5º, and 1º," says DELTA.

"The point aperture geometry specified by ASTM ensures realistic and accurate readings replicating realistic driving conditions. Furthermore it enables the user to determine if a microprismatic sign sheeting material has been applied correctly.

Due to the DELTA proprietary gradient index ultra hard coating (UHC) technology the sensor response meets the ASTM 1709 requirements combining the CIE (International Commission on Illumination) eye response and CIE illuminant A." DELTA says that the RetroSign GR3 is designed to easily interface with current and future ID tagging and asset management systems, and the internal memory stores up to 250,000 readings, "which essentially means that the instrument never runs out of memory."

For more information on companies in this article

Related Content

  • Sophisticated slipformer control from Wirtgen
    August 10, 2018
    Wirtgen is now offering a new version of its concrete slipformer control package. This new tool offers additional capabilities and improved performance over the earlier version. The company claims that its upgraded Wirtgen AutoPilot 2.0 package can deliver a higher paving accuracy along with lower costs. Newly-developed, this package is said to produce a wide array of offset and inset profiles, while also delivering these more economically and precisely than with the previous version. The 3D system can eit
  • Machine control technology evolving fast
    February 8, 2012
    The machine control market is evolving fast and is increasingly becoming part of a much wider construction site management concept, Mike Woof reports. Machine control technology has come a long way in the past 20 years and the development of 2D and 3D systems has been rapid in the construction sector.
  • ERF urges greater maintenance of Europe’s road signs to save lives
    March 21, 2016
    ERF has launched a position paper to advocate better maintenance of Europe’s traffic signs. Vertical signage is an essential element not only of a modern and well-maintained road infrastructure, but also of a safe and functional road network. Road signs help regulate traffic, provide crucial visual guidance and give drivers important preview especially during night-time conditions. Well maintained and efficient signage becomes even more necessary when taking into account the ageing population of Europe, in
  • Recycling from the wings to centre stage
    May 20, 2014
    Driven by the price of virgin aggregates and strong environmental concerns, the recycling of reclaimed asphalt already is and will increasingly be a hot topic within the asphalt plants’ and associated equipment manufacturing sector, says Kathrin Richter, marketing manager for Ammann’s Asphalt Division “Until a few years ago, the question was: How much reclaimed asphalt can one add to the recipe mix? Today, the question is more likely to be: How much fresh material should I add to the reclaimed asphalt? Ove