Standard Guide for Evaluation, Calibration, and Correlation of E274 Friction Measurement Systems and Equipment

Importancia y uso:

5.1 Friction characteristics of road surfaces are measured by friction measurement systems, and the operating procedure for the use of these systems is found in Test Method E274/E274M. However, over time, mechanical or electronic system anomalies may develop, resulting in measurement errors or inaccuracies. This requires that each of these systems be evaluated, calibrated, and correlated on a regular basis. The interval between calibrations depends on the frequency of use, maintenance, and other factors. If any repairs are made to the system that may affect the calibration, the system should be recalibrated before further use. Generally, calibrations and correlations are recommended to be performed on an annual basis by one of the FTCs.

5.2 This guide defines the process of ensuring that Test Method E274/E274M systems produce consistent and accurate data by correlating the Test Method E274/E274M systems to national standard Test Method E274/E274M systems.

Subcomité:

E17.21

Volúmen:

04.03

Número ICS:

21.260 (Lubrication systems)