... is used to check many kinds of electricity meter. With small size, light weight, strong function, it is the best ... harmonic measurement mode to realize calibration of fundamental meter. 6. Provided with two electric energy pulse input ports, which can at the ... amplification function. 13. Users can, according to demand, select clamp meter with 5A, 10A, 100A, 200A, 500A, 1000A, 2000A current span or ...