Multimeter use the matters needing attention

(1) before using the multimeter,should be "mechanical zero",namely when no power being measured,the multimeter pointer refers to in the position of zero voltage or zero current.(2) in the process of using the multimeter,can't use hand to touch pens and metal parts,so that on the one hand can guarantee the accuracy of the measurement,on the other asynchronous motor hand also can generator generator set guarantee personal safety.(3) in the measurement of a certain power,not in the measurement of shift at the motor vehicle same time,especially in measuring high voltage and large current,more attention should be paid to.Otherwise,can make the multimeter.For shifting,should first disconnect pens and,after the shift to measure again.(4) multimeter when use,must be placed,so as not to cause the error.At the same time,but must pay attention to avoid the influence of external magnetic field on the multimeter.(5) the multimeter after use,should be the biggest block switch in the ac voltage.acmotortrading.blogspot.com If you don't use for a long time,also should be multimeter out internal battery,so as to avoid battery corrosion of other devices in the table.