深圳市訊能電子/聲級計|深圳市訊能電子/聲級計
聲級計2240
二、驗收標準:
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聲級計2240
二、驗收標準:
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測量參數(shù):
可同時測出四個參數(shù)
LAF 瞬間聲壓值，頻率加權“A”
一、品名規(guī)格：聲級計2240
二、驗收標準:
IEC61672-1:2002 Class 1
IEC60651 Type 1(1979) with amendments 1 and 2
IEC60804 Type 1(2000)
ANSIS1.4-1983 Type S1
ANSIS1.
聲級計B&K2240
二、驗收標準:
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測量參數(shù):
可同時測出四個參數(shù)
LAF 瞬間聲壓值，頻率加權“A”