Amprobe DM-4 Power-Quality-Recorder - Manual (Page 6)

2.GENERAL DESCRIPTION
2.1 INTRODUCTION
The DM-4 also referred to as the Modular Data Logger (MDL), addresses the needs
of the most demanding Power Quality professionals. The device incorporates full set
of measuring features crucial for complete Power Quality analysis. An innovative
Remote User Interface (PDA) allows safe, easy and convenient operation of the
device remotely. Remote User Interface (PDA) is also used for data viewing, analy-
sis and transfer. Independently, the DM-4 can be used directly with a PC using
Download Suite software. Since the DM-4 does not have any control buttons on its
enclosure, it is protected against setup changes by unauthorized persons while the
device is recording, eliminating the need for password protection.
2.2 FUNCTIONS
The DM-4 is able to:
• Display in real time the electrical parameters of a single phase, two phase or
three-phase system (wye or delta) and the harmonic analysis of voltages and currents.
• Conduct a direct Energy measurement.
• Record simultaneously (pressing the RECORD key after a proper connection &
device configuration): RMS values of voltages, currents, corresponding harmonics;
active, reactive and apparent powers, power factor and cosΘ; active, reactive and
apparent energies; voltage sag and surge with 14ms resolution; and voltage spike
with 100ns resolution. It will be possible to analyze the recorded data by down-
loading the file using the Remote User Interface (PDA) or Download Suite.
• Record Data (pressing RECORD key) the sampled values of the Parameters
present at the instrument’s input. It will be possible to analyze the recorded
data by downloading the file with the Remote User Interface (PDA) device
or a PC using the Download Suite.
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DM-4 Power Quality Recorder