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GENERAL FEATURES & SPECIFICATIONS
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一般功能和规格
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AR-842A
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AR-852A
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AR-872S
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TemperatureRange
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-18℃～330℃
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-18℃～500℃
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-18℃～1050℃
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测温范围
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0～626℉
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0～932℉
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0～1922℉
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Accuracy
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±2%or±2℃
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±2%or±2℃
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±2%or±2℃
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测温精确度
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℃/℉ Selection
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√
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√
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√
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℃/℉温度单位转换
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Distance Spot Ratio
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12:1
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12:1
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12:1
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测量距离比率
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Data Hold Function
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√
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√
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√
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数据保持显示功能
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Auto Power Shut Off
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√
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√
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√
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自动关机功能
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Emissivity
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√
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√
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√
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发射率
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Backlight Display Selection
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√
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√
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√
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背光显示选择功能
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Laser Target Pointer Selection
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√
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√
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√
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镭射目标显示选择功能
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Average And Difference Function
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√
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√
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√
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平均值和温差测量功能
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Max And Min Function
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√
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√
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√
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最大、最小值测量功能
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High Low Temperature Alarm Setup
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√
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√
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√
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高低温报警设定功能
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Data Store/Recall Function
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√
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√
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√
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测量数据储存功能（断电记忆）
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Response Time & Wavelengh
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500ms & (8-14)um
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500ms & (8-14)um
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500ms & (8-14)um
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响应时间和响应值长
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Repeatability
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±1%or±1℃
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±1%or±1℃
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±1%or±1℃
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重复性
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