| 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 se-lection |
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 se-lection |
√ |
√ |
| 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 | |
| |
| packing information |
包装 |
| 包装方式1(中国) |
彩盒包装 |
彩盒包装 |
| 标准外箱容量 |
20 |
20 |
| 标准外箱尺寸 |
55.0＊45.0＊26.5cm |
57.0＊51.7＊23.8cm |
| 标准外箱毛重 |
13.96kg |
10.5kg |
| 包装方式2(other countries) |
blister |
blister |
| standard quantity per carton |
20 |
20 |
| standard carton size |
41.0＊37.5＊33.2cm |
41.0＊37.5＊33.2cm |
| standard carton gross weight |
5.76kg |
6.2kg | |
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