The MD 9231 is a TRMS AC and DC current clamp meter for industrial applications with large clamp opening and is suitable for the measurement of currents up to 1000 A. Important Features are the capacity and frequency measurement, the built-in VFD function enables it with the device real values in accordance with the frequency to measure. The MD 9231 has a wide range of additional functions, including data and max-hold functions, automatic cut-off, automatic range selection and a relatively zero function. It uses state-of-the-art measuring technology and is housed in a sturdy housing in industrial quality. It also has a torch for the working in dark environments.This text is machine translated.