SIMTEC TRACSCAN 2.0, Руководство по эксплуатации

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Operating Manual TRACSCAN 2.0
V2.0, 2022-05 21 / 36
5. Test Foot
5.1. General
Figure 7: Test Foot Top View
Figure 8: Test Foot Bottom View
The test foot consists of the Base and the Liner . A Memory Chip and two Magnetic Stubs are
embedded in the base. The liner basically models a sole. Various liner materials are supported,
see below. Some test programs (e.g., the ANSI and the NFSI programs) require a defined liner
material like SBR.
The surface (shape / curve and condition) of the liner has a crucial influence on the measured
COF values. Each test foot needs to be checked for abrasion, wear and hardening, as well as
for general condition before each measurement. If required, the test foot must be prepared
before use, see next section.
The liner should be renewed / replaced after, at most, 200 measurements. Contact your dis-
tributor for renewing, replacement or additional test feet.
Different liner materials (test foot types) are available:
•
SBR. Recommended standard liner and required for all NFSI methods.
An SBR test foot can be used both for wet and dry measurements. The hardness of the SBR
material has a crucial impact on the measurement result. As the SBR hardens over the
time, it is highly recommended to use SBR sliders that are not older than 3 years.
•
Black Rubber
A rubber test foot can be used for dry measurements, only. Before using a rubber test foot,
check its condition. The texture (fluting) must be clearly visible.
•
Leather
For some use cases, a leather test foot can be appropriate. A leather test foot can be used
both for wet and dry measurements. If used for wet measurements, the test foot must be
wetted for at least 15 minutes. It takes a few days until a wet test foot slider has completely
dried. A leather test foot that once got wet cannot be used for dry measurements any-
more.
• For other types contact your distributor.