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