Hioki clamp meters are best-in-class measuring devices incorporating Hioki’s expertise in current sensing technology. The 3280-10F is an average rectifying 1000A AC clamp meter that features a broad operating temperature range of -25 to 65°C, a thin and compact clamp core, and an optional flexible current sensor that you can attach to let you get into the tightest spots. When connected to an optional flexible current sensor, the 3280-10F can be used to measure the current flowing in pairs of wires or in tangled or complexly routed wires around which it was not possible to apply a clamp-on sensor in the past. Observe the difference between readings from these two types of instruments when measuring a distorted waveform that contains harmonic components such as those produced by inverters and switching power supplies.