Measuring system with high long-term stability

• Portable handheld retroreflectometer for determination of the night visibility (coefficient of luminous intensity R and R_I respectively) of road studs, ambient temperature (°C/°F) as well as relative humidity (rH %)
• For all types of retroreflective road studs
• Usable at any time of the day or night
• With memory as well as interfaces for PC and printer
• Measuring system with high long-term stability ensures constant measuring accuracy and thus reliable measuring results; automatic self-diagnosis avoids mismeasurements
• Factory calibration traceable to the independent Swiss Federal Institute of Metrology METAS

Standards

Product standards:
ASTM E1696 (withdrawn 2013)
EN 1463-2

General basic principle standards:
CIE 54.2