

Measuring System GripTester
Measuring system GripTester
according to the Instruction Manual for Skid Resistance Testing with the Longitudinal Friction Coefficient method (GripTester®)
Measuring principle:
- High-speed measuring system (in towing mode; alternatively, pushing mode at walking speed is possible as well)
- Fixed slip of the measuring wheel (15%)
- Measuring wheel vertically strained with 250 N
- Linear, continuous data recording
- Minimum measuring resolution: 16 cm
Quality assurance:
- Time-limited approval through BASt-accredited institution
- External monitoring every four months
- Driver training
- Monthly self-monitoring
- Comparative testing by the Association for quality in skid resistance testing (GGM)
- Camera-controlled data recording
Fields of application:
- Road surface measurements, primarily in the municipal road network and the secondary road network
- Measurements in pedestrian areas, cycle ways, paving and slab surfaces
(towing mode or pushing mode) - Measurements of cross-sections (in pushing mode)
- Skid resistance testing of road markings
Measuring Conditons:
- Temperature of the measuring object surface: minimum of 5 °C up to a maximum of 50 °C
- Water temperature (in the water tank): minimum of 8 °C up to a maximum of 25 °C

