Application of dynamic split sampling technique in evaluating compressed gas systems
SU Jiancheng
Abstract：Objective:To evaluate whether the gas quality in medical compressed gas systems meets the usage standards through test data.When conducting evaluation work,the pressure characteristics of medical gases should be identified to avoid the risk of clinical use caused by defects in detection technology.Methods:Based on the pressure characteristics of medical gases,validation experiments were conducted using split sampling technique to simulate and design various operating conditions of compressed gas systems.Evidence-based practice was carried out with 0.5 μm particulate matter as the evaluation object,and the test data were used to assess the operating status of compressed gas systems under different working conditions.Results:A total of 5 sets of test data were collected,with a coefficient of variation of 0.49 for Group D,which was the highest in the experimental group.The mean data of Group E was 833 158,which was the highest in the experimental group.Conclusion:The coefficient of variation between the data in Group E is only 0.06,but the mean data is the highest,indicating that the purification effect of the filtering components in the compressed gas system has failed at an output state of 500 L/min.Based on the mean and coefficient of variation of Group D data,300 L/min is considered as the critical flow state of the tested compressed gas system.
Keywords：compressed gassplit samplingevidence-basedcoefficient of variation
Publication Date：2024-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 10-15 )