AEMC Instruments Simple Logger II Model ML912

The Simple Logger II Model ML912 is a two-channel, AC current recording device that incorporates two user-selectable measurement ranges of 0.5-100 and 5-1000 A.

Line tracking is performed such that 64 samples over one line cycle are taken. Frequency tracking is performed over the range of ±2 Hz around the nominal line frequency (50 or 60 Hz). Harmonic measurements are calculated from these 64 samples.

The alkaline battery powered device stores TRMS at user-programmable rates of up to eight times per second. TRMS calculations are performed on a single line cycle.

A key feature of the logger is its ability to perform a variety of recording tasks with intuitive set-up from a computer using DataView software.

Analog information on the input is sampled and converted to a digital signal. This digital signal is processed and stored along with scale and time information. An optically isolated USB port provides for the transfer of data from the instrument’s internal memory to the computer for analysis.

Typical applications include split-phase load monitoring, neutral and ground current monitoring, intermittent problem detection, harmonic current monitoring and machine load monitoring.