详细说明 ar-817 ar-847 temperature measuring range -10℃～50℃ -10℃～50℃ 测温范围 -20℃～1000℃(k-type) humidity measuring range 10%rh-99%rh 5%rh-98%rh 湿度测量范围 ℃/℉ selection √ √ ℃/℉温度单位转换 accuracy of temperature ±1℃ ±1℃ 温度测量误差 ±2℃or±3%(k-type) accuracy of humidity ±3%(30-95%) ±3%(30-95%) 湿度测量误差 ±5%(10-30%) ±5%(10-30%) auto /manualpower off √ √ 自动/手动关机功能 low battery indication √ √ 低电显示功能 backlight display _____ √ 背光显示选择功能 data hold √ √ 数据保持功能 k-type themocouple temperature _____ √ measuring k型热电偶测试功能 temperatureresolution 0.1℃ 0.1℃ 温度解析度 humidity resolution 0.1%rh 0.1%rh 湿度解析度 sampling rate 2times/sec 2.5times/sec 取样频率 temperature max/min measuring _____ √ 温度大小值测量功能 humidity max/min measuring _____ √