Measuring System
GripTester
Measuring system GripTester
According to the Instruction Manual for Skid Resistance Testing with the Longitudinal Friction Coefficient method (GripTester®)
Picture source: Al-LFCG
GripTester / LFC measuring
(Source: Instruction Manual for Skid Resistance Testing)
with the LFC measuring (GripTester))
GripTester / LFC measuring
(Source: Instruction Manual for Skid Resistance Testing)
with the LFC measuring (GripTester))
View of GripTester underside
Measuring principle:
- High-speed measuring system
- Fixed slip (15%)
- Test wheel vertically strained with 250 N
- Linear, continuous data recording
- Lowest measuring resolution: 16 cm
Quality assurance:
- Time-limited approval through BASt-accredited institution
- External monitoring every four months
- Driver training
- Monthly self-monitoring / tire check
- Comparative testing by the Association for quality in skid resistance testing (GGM)
- Camera-controlled data recording
Fields of application:
- Road surface measurements in the municipal and ancillary road network
- Measurements in pedestrian areas, cycle ways, paving and slab surfaces
(towing or pushing mode) - Measurement of cross-sections (in pushing mode)
- Skid resistance testing of road markings