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Title: Lightning Protection And Grounding For Remote Flow Computers
Author: Clifford R. Pelchat
Source: 1998 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1998
Abstract: The purpose of this paper is to discuss the methods that can be used to protect electronic equipment from electrical surges caused by lightning. Probably everyone reading this article can share an experience where damage to some electronic device was caused by lightning. Lightning can strike utility structures a great distance from a meter installation and still cause major damage to the electronic instrumentation. These strikes can cause surges on telephone lines, AC electrical lines, and sometimes, buried steel pipe lines. At times these surges can reach several thousand volts. Protection is generally achieved by diversion and shielding or by limiting the amounts of currents and voltages that can pass through the equipment. I will discuss a typical installation and the steps that you can take to provide proper grounding, (diversion), and some of the methods and devices that are used to limit current and voltage.

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