| GENERAL FEATURES & SPECIFICATIONS | 一般功能和規(guī)格 |  | 
|  |  |  |  | 
|  | AR-842A | AR-852A | AR-872S | 
| TemperatureRange | -50℃~330℃ | -50℃~500℃ | -50℃~1050℃ | 
| 測溫范圍 | -58~626℉ | -58~932℉ | -58~1922℉ | 
| Accuracy | ±2%or±2℃ | ±2%or±2℃ | ±2%or±2℃ | 
| 測溫精確度 | 
| ℃/℉ Selection | √ | √ | √ | 
| ℃/℉溫度單位轉(zhuǎn)換 | 
| Distance Spot Ratio | 12:1 | 12:1 | 12:1 | 
| 測量距離比率 | 
| Data Hold Function | √ | √ | √ | 
| 數(shù)據(jù)保持顯示功能 | 
| Auto Power Shut Off | √ | √ | √ | 
| 自動關(guān)機功能 | 
| Emissivity | √ | √ | √ | 
| 發(fā)射率 | 
| Backlight Display Selection | √ | √ | √ | 
| 背光顯示選擇功能 | 
| Laser Target Pointer Selection | √ | √ | √ | 
| 鐳射目標顯示選擇功能 | 
| Average And Difference Function | √ | √ | √ | 
| 平均值和溫差測量功能 | 
| Max And Min Function | √ | √ | √ | 
| 最大、最小值測量功能 | 
| High Low Temperature Alarm Setup | √ | √ | √ | 
| 高低溫報警設(shè)定功能 | 
| Data Store/Recall Function | √ | √ | √ | 
| 測量數(shù)據(jù)儲存功能(斷電記憶) | 
| Response Time & Wavelengh | 500ms & (8-14)um | 500ms & (8-14)um | 500ms & (8-14)um | 
| 響應時間和響應值長 | 
| Repeatability | ±1%or±1℃ | ±1%or±1℃ | ±1%or±1℃ | 
| 重復性 |