Evaluation of uncertainty in air change rate of thermal aging test chamber
The air change rate of the thermal aging test chamber is an important parameter in ensuring its experimental performance.The calibration of the air change rate parameter involves many parameters,such as temperature,electric power,density of air,and working volume.Therefore,the process of e-valuating its measurement uncertainty is quite complex.This paper mainly uses the air change rate cali-bration method of the thermal aging test chamber in JB/T 7444-2018"Air Thermal Aging Test Cham-ber"to convert its measurement model into a product and quotient form,and greatly simplifies the calcu-lation of the sensitivity coefficients of each component in the evaluation process,providing reference for metrological calibration personnel.
thermal aging test chamberventilation rateuncertainty evaluation
NETL
NSTL
万方数据
