The PROMAX CT-327 600V/2000A True-RMS AC Three-Phase/Single-Phase Wattmeter Clamp Meter is a professional-grade instrument that includes a datalogger, graphical screen, transient capture, peak-to-peak measurement, and a phasor diagram. In addition to the capabilities of power and energy measurement (active, apparent, and reactive), this unit can trace the voltage and current graphs as well as the harmonics without needing additional instruments.

By inserting a microSD card in the memory slot, measurement records with an user-definable time between samples of 2 to 7,200 seconds can be stored. Memory cards of up to 32 gigabytes are accepted and an 8 gigabyte microSD memory card is included for standard use.

The CT-327 unit has a built-in real-time clock to attach the day and time to the measurements. These measurements can be transferred to a computer and processed with any compatible application.