深圳市讯能电子有限公司

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&K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&K2240
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”