伊人激情av一区二区三区,亚洲乱亚洲乱妇,女逼穴穴抽插下载上厕所,国产呦系列视频在线观看

直流電路中怎么測量毫安，4-20mA

引用

引用第4樓ffd001于2014-08-27 17:25發(fā)表的  :
有鉗流表，不過價格實在是猛，單位報銷的話可以考慮

直流電流能用鉗流表？

引用

引用第8樓ffd001于2014-08-27 18:48發(fā)表的  :

大驚小怪，還有直流電流互感器

查了一下，還真有直流鉗形表。
看來我真 OUT 了

2. SPECIFICATIONS
2.1 Electrical Data
(All accuracies stated at 23°C ± 1°C)
LH41
Measuring Range............... 0 - 40 A DC or AC pk
Autoranging........................ 4A / 40A
Resolution.......................... 1 mA in 4 A range
                                            10 mA in 40 A range
Accuracy
Basic Accuracy .................. ± 1.3% rdg ± 5 digits
Temperature coefficient ..... ± 0.05% of rdg / °C
Frequency range................ DC in DC
                                           40 Hz to 400 Hz in AC
Overload capacity .............. 150 A
Dielectric strength .............. 3.7kV RMS. 50 Hz 60s
(EN61010-2-032 Cat III, 300V Pollution Degree 2)