| AR852A系列非接触式红外线测温仪 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 | √ | √ | √ | 
                                            | zui大、zui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 |