Although interval (stripchart) data can show cycle max and min readings, it's not normally used to get the duration of an event like a sag – waveform capture, event capture,…
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Harmonics from Periodic Waveform Capture
Harmonics are usually recorded as interval (stripchart) data in PMI recorders. Each desired harmonic is recorded as a min/ave/max stripchart trace, for each desired voltage and current channel. Although this…
ProVision PQDIF Export
ProVision's native data file format is designed for efficient storage and access of all PQ data from the full line of PMI recorders. However, ProVision can also export certain data…
Flex CT Overview
This white paper describes what a Flex CT is, how it works, and a brief history on its development. Details are given on how to use the Flex CT to…
Event Capture Function
This white paper is an overview of the Event Capture function available with PMI power quality analyzers. Event capture can be viewed with either ProVision or WinScan software. This paper…
kWh Variations Between PMI Recorders and Revenue Meters
This white paper discusses some of the reasons that PMI's power quality analyzers may differ with the exact amount of power indicated by a power company's revenue meter. There are…
Tools for Cell Signal Verification Before Installation
Good cell phone coverage is not always guaranteed. It varies widely depending upon location, system and cell phone provider. The purpose of this white paper is to provide some suggestions…
Bluetooth Security
This white paper will discuss several of the security concerns regarding PMI's Power Quality Recorders and their implementation of the Bluetooth protocol. Bluetooth security concerns have been tackled for many…
Formulas for Power and Harmonic Measurements
PMI recorders use a variety of algorithms to compute RMS voltage and current, real, reactive, and apparent power, true and displacement power factor, and phase angle. The formulas for these…
Event Driven Recorder Function
What follows is a general overview of some of the basic event driven recorder functions available when using ProVision Software and some instructions on getting started with collecting useful data…
Optimizing Memory in a Recorder
This white paper describes the proper steps to optimize your recorder's memory for longer record times and better resolution of data.
PMI Data File Formats
PMI's Desktop PC Software, ProVision and WinScan, use a variety of different file formats to accomplish a number of different tasks. This white paper will discuss each of these file…
