Calibration Techniques for Test Apparatus Specified in GB/T 31248—2014

With the widespread application of GB/T 31248—2014 in construction engineering and rail transit, the number of cable combustion performance test apparatus specified in this standard has significantly increased. However, during the process of equipment debugging and calibration, varying degrees of deviation often occur due to factors such as technical proficiency of operators, environmental conditions, and equipment state, which can directly affect consistency and stability of test results. Therefore, debugging and calibration methods for the test apparatus were explored in order to eliminate or reduce deviations during calibration process, ensuring accuracy and reliability of test results. Debugging and calibration process of the test apparatus was comprehensively elaborated with particular focus on calibration of heat release testing system, smoke measurement system and burner flame shape. Through the application of aforementioned calibration methods, measurement deviations of the test apparatus could be significantly reduced, and consistency and stability of test results could be markedly improved. This debugging and calibration methods could exhibit high practicality and operability, effectively reducing deviations during calibration process, and providing reliable technical support for combustion performance test, which could promote the standardized implementation of GB/T 31248—2014.