SAE J1649/1的本部分规定了通用工业压缩空气的质量等级（例如车间、建筑行业、气动运输等），而不考虑从压缩机排出的空气质量。特定应用的压缩空气质量等级必须基于在特定时间段和规定操作条件下进行的几次测量的平均值。

This part of SAE J1649/1 specifies quality classes of industrial compressed air for general use (e.g. for workshops, the construction industry, pneumatic transport, etc.) without consideration of the quality of the air when it is discharged from the compressor. The quality class of compressed air for a particular application has to be based on the mean value of several measurements carried out over a specific period of time and under defined operating conditions.