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Three-channel mains current data logger

19 August 2011

The new PicoLog CM3 USB/Ethernet Current Data Logger from Pico Technology is a compact, easy-to-use instrument for measuring the power consumption of buildings and machinery. With three channels, it can monitor current in single-phase and 3-phase ac installations, and comes complete with three fully certified ac current clamps and a powerful data acquisition software package. The measuring range is 0 to 200A, with an accuracy of +/-1% and less than 10mA noise. Conversion resolution is 24 bits.

The Current Data Logger is supplied with the PicoLog data logging software, which runs on any PC with Windows XP or later. PicoLog can collect data from up to 20 PicoLog CM3s at programmable intervals from 720ms per channel up to minutes, hours or even days.

It displays readings in a monitor window with optional limit alarms, alongside optional live graph and table views of the same data. You can export readings in a standard text format compatible with other spreadsheet and analysis programs.

A software development kit is also included, containing Windows DLLs, drivers and example code, allowing you to integrate the device into your own software.


The device costs £349 and it is covered by Pico’s free 5-year parts-and-labour warranty against manufacturing faults. It is offered with free technical support.


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