| general features & specifications |
一般功能和规格 |
|
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|
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 |
| ℃/℉ se-lection |
√ |
√ |
√ |
| ℃/℉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 se-lection |
√ |
√ |
√ |
| 背光显示选择功能 |
| laser target pointer se-lection |
√ |
√ |
√ |
| 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 |