深圳市讯能电子/声级计|深圳市讯能电子/声级计 声级计2240 二、验收标准: IEC61672-1:2002 Class 1 IEC60651 Type 1(1979) with amendments 1 and 2 IEC60804 Type 1(2000) ANSIS1.4-1983 Type S1 ANSIS1.43-1997 B&aaK声级计2240 二、验收标准: IEC61672-1:2002 Class 1 IEC60651 Type 1(1979) with amendments 1 and 2 IEC60804 Type 1(2000) ANSIS1.4-1983 Type S1 ANSIS1.43-1997 Type 1 2．1测量参数: 可同时测出四个参数 LAF 瞬间声压值，频率加权“A” 一、品名规格：声级计2240 二、验收标准: IEC61672-1:2002 Class 1 IEC60651 Type 1(1979) with amendments 1 and 2 IEC60804 Type 1(2000) ANSIS1.4-1983 Type S1 ANSIS1. 声级计B&aaK2240 二、验收标准: IEC61672-1:2002 Class 1 IEC60651 Type 1(1979) with amendments 1 and 2 IEC60804 Type 1(2000) ANSIS1.4-1983 Type S1 ANSIS1.43-1997 Type 1 2．1测量参数: 可同时测出四个参数 LAF 瞬间声压值，频率加权“A” %CrLf%%BAAddr%%CrLf%518100%CrLf%%BICode%%BACode%%CrLf%汪献重%CrLf%www.21ctest.com