Aiming at the networking demand of modern measuring apparatus

a current measuring apparatus with double-CPU is designed

one CPU answers for current measurement

data calculation

keyboard operation and etc

the other answers for storage and communication.The apparatus increases the measuring precision by temperature auto-compensation which is realized by design of current measuring circuit

and it realizes networking measurement by designing network interface.The experimental results show the maximal measuring error of current is 0.57 %.The universal design of hardware and soft makes the apparatus be used in electrical source monitor and machine protection.