供应希玛AR824噪音计分贝仪

型号

AR-814

AR-824

Measuring Range

30～130dBA

30～130dBA

测量范围

35～130dBC

35～130dBC

Accuracy

±1.5dB

±1.5dB

测量准确度

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

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

√

√

非常大值锁定

Sampling Frequency

2times/sec

2times/sec