ND9聲級(jí)計(jì)校準(zhǔn)器(噪音計(jì)校準(zhǔn)器)/ND9聲級(jí)計(jì)校準(zhǔn)器(噪音計(jì)校準(zhǔn)器)ND9聲級(jí)計(jì)校準(zhǔn)器(噪音計(jì)校準(zhǔn)器)的詳細(xì)介紹項(xiàng)目參數(shù)產(chǎn)品名稱聲級(jí)計(jì)校準(zhǔn)器(噪音計(jì)校準(zhǔn)器)產(chǎn)品型號(hào)ND9標(biāo)準(zhǔn)ANSIS1.40CLASS2,IEC942輸出聲級(jí)94dB 114dB頻率1000Hz+2.4%準(zhǔn)確度0.5dB電源9V6F22BATTERY外形尺寸145X47X47mm應(yīng)用1",1/2"聲級(jí)計(jì)的校準(zhǔn)