数字噪音计 LA-AR814
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
GENERAL CHARACTERISTICS 一般特征
Power 9V (Alkaline or DC Adapter) 6V (4*AA Alkaline or DC Adapter)
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
LCD size 30*50mm 30*50mm
LCD尺寸
Product Color Ivory Ivory
产品颜色 象牙白 象牙白
Product Net Weight 178g 300g(include battery)
产品净重
Product Size 207*70*29mm 265*70*35mm
产品尺寸