This question is too big, but that it is formed by the clamp table, he told the other difference is a clamp meter function, the card can be current, the other with general multimeter not what difference, what we should see is what brand what models.
Pliers.An electrician is used to measure current.The measured wire is in the center of the jaw and its current can be measured.
At the same time as the two into the ring clamp meter, ammeter display is the current third wire. The three are placed in the table at the same value as zero (according to Gil Hof's law, flowing in or out).
Measurement methods: firstly, the jaw clamp ammeters clean (to ensure full, jaw anastomosis) and then estimate the current measured wire, the clamp ammeters stalls to proper position (if you do not know the measured current, the current position is adjusted in sequence from large to small, every adjustment must be table from the measured wire), then measured a wire into the ring opening on ammeter, current at the table shows that the measured conductor, in measure second and third respectively.
Clamp current meter has two kinds, one can only measure the AC current, capable of measuring AC and DC current, mainly used to measure the line current, other auxiliary functions can measure resistance, voltage etc..
