| ??? 07/08/09 19:37 Read: times |
#166882 - Now, that you enter into a discussion... Responding to: ???'s previous message |
...give us some more details, please.
What currents are you talking about? Who generates the currents to be measured? How is that current generated? What range of currents? What precision? etc etc.. Saman said:
can it be done with less spectacular 0.1% or even 1% with help of some calibration procedures? It depends. 1% resistors can give a drift of 0.3% in two years, when temperature at surface is high. In climates with long high temperature periods and high air humidity drift can be even higher. Sometimes you can fabricate resistances by yourself, by the help of precision wire, especially low ohmic shunt resistors can be fabricated by this. You must just give us more details... Kai |
