数字噪音计 AR824

SMARTSENSOR数字噪音计AR824GENERAL FEATURES & SPECIFICATIONS一般功能和规格 AR-814AR-824Measuring Range30～130dBA30～130dBA测量范围35～130dBC35～130dBCAccuracy±1.5dB±1.5dB测量精确度Frequency Range31.5HZ-8.5KHZ31.5HZ-8.5KHZ频率响应Linearity Range50dB50dB动态范围AC/DC Output√√AC/DC 信号输出Auto Power Shut Off√√自动关机功能Low Battery Indication√√低电显示功能Over Range Indication√√过载提示Digit & Resolution5Digits & 0.1dB5Digits & 0.1dB数位及分辨率Time Weighting SelectionFast/SlowFast/Slow动态特性选择Microphone1/2 Inch Electret Condenser Microphone麦克风1/2 英寸电容式麦克风Frequency WeightingA & CA & C频率加权特性Sound Measuring Level Selection√√测量档位选择Max Hold Function√√值锁定Sampling Frequency2 times/sec2 times/sec