--- title: Power Quality Library | Power Monitors, Inc | David Horning (4) description: For 25 years, we’ve been developing specialized power quality monitoring systems that are all-weather, rugged, compact, and easy to use. 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Find me on: ## Recent Posts ## [Advanced Harmonic Analysis Through Bulk ProVision Exports](https://library.powermonitors.com/advanced-harmonic-analysis-through-bulk-provision-exports) Aug 17, 2016, 6:00:00 AM [David Horning](https://library.powermonitors.com/author/david-horning) [ProVision](https://library.powermonitors.com/topic/provision), [Power Quality](https://library.powermonitors.com/topic/power-quality), [Harmonics/Interharmonics](https://library.powermonitors.com/topic/harmonics-interharmonics) [Read More »](https://library.powermonitors.com/advanced-harmonic-analysis-through-bulk-provision-exports) ## [Cell, WiFi, and More with the New Cell Guardian Meter Socket Recorder](https://library.powermonitors.com/cell-wifi-and-more-with-the-new-cell-guardian-meter-socket-recorder) Mar 9, 2016, 6:00:00 AM [David Horning](https://library.powermonitors.com/author/david-horning) [PMI Products](https://library.powermonitors.com/topic/pmi-products), [Cellular Communications](https://library.powermonitors.com/topic/cellular-communications), [Communications](https://library.powermonitors.com/topic/communications), [Guardian](https://library.powermonitors.com/topic/guardian), [Meter Sockets](https://library.powermonitors.com/topic/meter-sockets), [Using PMI Recorders](https://library.powermonitors.com/topic/using-pmi-recorders) [Read More »](https://library.powermonitors.com/cell-wifi-and-more-with-the-new-cell-guardian-meter-socket-recorder) ## [Flicker Investigation Strategy](https://library.powermonitors.com/flicker-investigation-strategy) Jan 13, 2016, 6:00:00 AM [David Horning](https://library.powermonitors.com/author/david-horning) [PMI Products](https://library.powermonitors.com/topic/pmi-products), [Power Quality](https://library.powermonitors.com/topic/power-quality), [Flicker](https://library.powermonitors.com/topic/flicker), [Box Recorder](https://library.powermonitors.com/topic/box-recorder), [Guardian](https://library.powermonitors.com/topic/guardian), [Eagle](https://library.powermonitors.com/topic/eagle) [Read More »](https://library.powermonitors.com/flicker-investigation-strategy) ## [Plotting PQ Events on the CBEMA - ITIC Curve](https://library.powermonitors.com/plotting-pq-events-on-the-itic-cbema-curve) Nov 4, 2015, 6:00:00 AM [David Horning](https://library.powermonitors.com/author/david-horning) [Power Quality](https://library.powermonitors.com/topic/power-quality) [Read More »](https://library.powermonitors.com/plotting-pq-events-on-the-itic-cbema-curve) ## [Using Mixed Graphs for Distributed Generation Analysis](https://library.powermonitors.com/mixed-graphs-for-distributed-generation-analysis) Aug 18, 2015, 5:33:00 PM [David Horning](https://library.powermonitors.com/author/david-horning) [Distributed Generation](https://library.powermonitors.com/topic/distributed-generation) [Read More »](https://library.powermonitors.com/mixed-graphs-for-distributed-generation-analysis) ## [Understanding Vector Diagrams](https://library.powermonitors.com/understanding-vector-diagrams) Jun 5, 2013, 6:30:00 AM [David Horning](https://library.powermonitors.com/author/david-horning) [ProVision](https://library.powermonitors.com/topic/provision), [Power Quality](https://library.powermonitors.com/topic/power-quality) [Read More »](https://library.powermonitors.com/understanding-vector-diagrams) [Prev](https://library.powermonitors.com/author/david-horning/page/3) [All posts](https://library.powermonitors.com/all) Power Monitors, Inc. is an industry-leading product design and manufacturing firm based in Mt. Crawford, Virginia. PMI® strives to solve power quality problems by listening to our customers and working with them to design and manufacture products. Total customer satisfaction is the primary goal of all PMI® staff. Please browse our site or call us to learn more about PMI® and how we can help meet your power monitoring needs. 800 N Main St Mt Crawford, VA 22841 | Toll Free 800.296.4120 | Fax 540.432.9430 | © Power Monitors, Inc.