VTI Portable Friction Tester is a friction measuring device for continuous measurements at
walking speed. PFT is primarily designed for measurements on road markings, thereby meeting
VTI's high demands on quality, repeatability and robustness combined with easy operation and
calibration in field.
Operation
PFT uses fixed longitudinal slip (25%) with a friction number defined as the friction force/test wheel load.
The display indicates min/max and average friction, average speed and remaining measurement distance. Data is stored in memory for further analysis on ASCII format.
Technical data
Test wheel load:125 N
Test tyre: 4.00-6, with traceable, high quality
rubber wear course.
Weight: 35 kg
Tyre inflation pressure: 100 kPa
Standard measurement speed 0.5 ± 0.1 m/s
Minimum measurement distance: 0.1 m
Maximum measurement distance: 175 m
CE compliant
Fields of use
Road markings
Road and bridge pavements
Bicycle and pedestrian paths
Airfield runways
Various types of floor materials