AR-824数字噪音计的详细介绍GENERALFEATURES SPECIFICATIONS一般功能和规格 AR-814AR-824MeasuringRange30～130dBA30～130dBA测量范围35～130dBC35～130dBCAccuracy 1.5dB 1.5dB测量精确度FrequencyRange31.5HZ-8.5KHZ31.5HZ-8.5KHZ频率响应LinearityRange50dB50dB动态范围AC/DCOutput AC/DC信号输出AutoPowerShutOff 自动关机功能LowBatteryIndication 低电显示功能OverRangeIndication 过载提示Digit Resolution5Digits 0.1dB5Digits 0.1dB数位及分辨率TimeWeightingSelectionFast/SlowFast/Slow动态特性选择Microphone1/2InchElectretCondenserMicrophone麦克风1/2英寸电容式麦克风 FrequencyWeightingA CA C频率加权特性SoundMeasuringLevelSelection 测量档位选择MaxHoldFunction 最大值锁定SamplingFrequency2times/sec2times/sec取样频率 GENERALCHARACTERISTICS一般特征Power9V（AlkalineorDCAdapter）6V（4*AAAlkalineorDCAdapter）供电9V碱性电池或者电源适配器4节1.5VAA碱性电池或6V电源适配器LCDsize30*50mm30*50mmLCD尺寸ProductColorIvoryIvory产品颜色象牙白象牙白ProductNetWeight178g300g（includebattery）产品净重ProductSize207*70*29mm265*70*35mm产品尺寸 PACKINGINFORMATION包装包装方式1（中国）彩盒包装彩盒包装标准外箱容量2020标准外箱尺寸55.0*45.0*26.5cm57.0*51.7*23.8cm标准外箱毛重13.96kg10.5kg包装方式2（OtherCountries）BlisterBlisterStandardQuantityPerCarton2020StandardCartonSize41.0*37.5*33.2cm41.0*37.5*33.2cmStandardCartonGrossWeight5.76kg6.2kg