SMARTSENSOR数字噪音计AR824 GENERAL FEATURES & SPECIFICATIONS 一般功能和规格
AR-814
AR-824
Measuring Range
30~130dBA
30~130dBA
测量范围
35~130dBC
35~130dBC
Accuracy
±1.5dB
±1.5dB
测量精确度 Frequency Range
31.5HZ-8.5KHZ
31.5HZ-8.5KHZ
频率响应 Linearity Range
50dB
50dB
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 & Resolution
5Digits & 0.1dB
5Digits & 0.1dB
数位及分辨率 Time Weighting Selection
Fast/Slow
Fast/Slow
动态特性选择 Microphone 1/2 Inch Electret Condenser Microphone 麦克风 1/2 英寸电容式麦克风
Frequency Weighting
A & C
A & C
频率加权特性 Sound Measuring Level Selection
√
√
测量档位选择 Max Hold Function
√
√
最大值锁定 Sampling Frequency
2 times/sec
2 times/sec
取样频率