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CENTER-326噪音校正計CENTER326廠家

CENTER-326噪音校正計/校正器的詳細介紹

噪音校正計/校正器CENTER-326簡介：

• 94dB和 114dB參考音壓
• 準確度高,操作容易
• 可校正 1", 1/2" 和 1/4" 標準規格麥克風的噪音計
• LED顯示
• IEC 60942（2003）,Calss 2,Ans 1.40-1984

噪音校正計/校正器CENTER326的參數：
輸出音壓準位 114dB and 94dB
輸出頻率 1000Hz ±2%
參考環境 23℃（73℉）, 103hpa, 65%RH
準確度 ±0.5dB
電源 單一 9V電池, 006P or IEC 6F22 or NEDA 1604.
電池電力檢測 低于工作電壓自動關機
外形尺寸 113（L） × 63（W） × 44（H）mm
重量 約 170g （含電池）
附件 9V電池、包(bao)裝(zhuang)盒(he)、說明書、1", 1/2"和1/4"麥克風(feng)轉換頭

DZKW-D-1 DKS28  DKS26  DK-S24 DKS22 DHG-9241A RE52CS JB300-SH TH-4000 AC120-S JJ-1 JRJ300-1 A300-70G  LDZH-200KBS LDZH-100KBS

噪聲(sheng)計(ji)又叫（噪音(yin)計(ji)、聲(sheng)級(ji)計(ji))是(shi)噪聲(sheng)測量(liang)中(zhong)基本的儀器(qi)(qi)(qi)(qi)(qi)。聲(sheng)級(ji)計(ji)一般由電容式傳(chuan)聲(sheng)器(qi)(qi)(qi)(qi)(qi)、前置(zhi)放大器(qi)(qi)(qi)(qi)(qi)、衰減器(qi)(qi)(qi)(qi)(qi)、放大器(qi)(qi)(qi)(qi)(qi)、頻率計(ji)網絡以及有(you)效(xiao)值(zhi)指示(shi)表(biao)頭(tou)等組成。聲(sheng)級(ji)計(ji)的工(gong)作(zuo)原理是(shi)：由傳(chuan)聲(sheng)器(qi)(qi)(qi)(qi)(qi)將聲(sheng)音(yin)轉換成電信(xin)(xin)號，再(zai)(zai)由前置(zhi)放大器(qi)(qi)(qi)(qi)(qi)變換阻(zu)抗，使傳(chuan)聲(sheng)器(qi)(qi)(qi)(qi)(qi)與衰減器(qi)(qi)(qi)(qi)(qi)匹配。放大器(qi)(qi)(qi)(qi)(qi)將輸(shu)出信(xin)(xin)號加到(dao)(dao)網絡，對信(xin)(xin)號進行頻率計(ji)權（或外接濾波器(qi)(qi)(qi)(qi)(qi)），然后再(zai)(zai)經(jing)衰減器(qi)(qi)(qi)(qi)(qi)及放大器(qi)(qi)(qi)(qi)(qi)將信(xin)(xin)號放大到(dao)(dao)一定的幅值(zhi)，送(song)到(dao)(dao)有(you)效(xiao)值(zhi)檢波器(qi)(qi)(qi)(qi)(qi)。

噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)計(ji)(ji)又叫（噪(zao)音(yin)計(ji)(ji)、聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)計(ji)(ji))是(shi)噪(zao)聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)測量中基本的(de)儀器(qi)(qi)(qi)。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)計(ji)(ji)一般由電(dian)容式傳聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)、前(qian)置(zhi)放大(da)器(qi)(qi)(qi)、衰減器(qi)(qi)(qi)、放大(da)器(qi)(qi)(qi)、頻率(lv)計(ji)(ji)網絡以及有效值指示(shi)表頭等組成。聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)級(ji)(ji)計(ji)(ji)的(de)工作原(yuan)理是(shi)：由傳聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)將聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)音(yin)轉換成電(dian)信(xin)(xin)號，再由前(qian)置(zhi)放大(da)器(qi)(qi)(qi)變換阻(zu)抗(kang)，使(shi)傳聲(sheng)(sheng)(sheng)(sheng)(sheng)(sheng)器(qi)(qi)(qi)與衰減器(qi)(qi)(qi)匹(pi)配。放大(da)器(qi)(qi)(qi)將輸(shu)出信(xin)(xin)號加(jia)到(dao)網絡，對信(xin)(xin)號進(jin)行頻率(lv)計(ji)(ji)權（或外接濾波(bo)器(qi)(qi)(qi)），然后(hou)再經衰減器(qi)(qi)(qi)及放大(da)器(qi)(qi)(qi)將信(xin)(xin)號放大(da)到(dao)一定的(de)幅值，送(song)到(dao)有效值檢波(bo)器(qi)(qi)(qi)。