BASIC INSTRUMENTATION MEASURING DEVICES AND BASIC PID CONTROL


INTRODUCTION
Instrumentation is the art of measuring the value of some plant parameter,
pressure, flow, level or temperature to name a few and supplying a signal
that is proportional to the measured parameter. The output signals are
standard signal and can then be processed by other equipment to provide
indication, alarms or automatic control. There are a number of standard
signals; however, those most common in a ....etc

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Abstract

Magnets have been known for centuries.
The Chinese and Greeks knew about the magical properties of magnets. The ancient Greeks used a stone substance called magnetite. They discovered that the stone always pointed in the same direction. Later, stones of magnetite called lodestones were used in navigation.

William Gilbert, an English physician, first proposed in 1600 that the earth itself is a magnet, and he predicted that the Earth would be found to have magnetic poles.



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President Nicolas Maduro said the diplomats comprise 48 hours to pull out the surroundings, saying Yankees, time exposed house!Mr Maduro says he has signify that the triplet took to some extent in a power-grid impairment in September and had bribed Venezuelan companies to cut down production.The Pooled States and Venezuela have been without ambassadors in each other's capitals since 2010. The diplomats expelled arrange been named as Kelly Keiderling - the accusation d'affaires and the most superior US diplomat in Caracas - Dav ....etc

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basic antenna theory ppt

Antenna theory and antenna terminology can seem complicated to the uninitiated. A lot goes into designing antennas but with a little bit of guidance and explanation, antenna users (network designers, systems integrators, end users) can read through the antenna specifications and choose the right antenna style for their wireless network design.

In this paper we will go over some simple techniques to help you better understand some terminologyused and how it is applied in the Antenna industry. This will be part one of a ....etc

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Electricity & Magnetism


Atoms

Have neutrons, protons, and electrons.

Protons are positively charged

Electrons are negatively charged

Electrons

Are located on the outer edges of atoms they can be moved.

A concentration of electrons in an atom creates a net negative charge.

Static Electricity

The build up of an electric charge on the surface of an object.

The charge builds up but does not flow.

Static electricity is potential energy. I ....etc

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reverse magnetism technical seminar with ppt

The Earth has a magnetic field, as can be seen by using a magnetic compass. It is mainly generated in the very hot molten core of the planet and has probably existed throughout most of the Earth's lifetime. The magnetic field is largely that of a dipole, by which we mean that it has one North pole and one South pole. At these places, a compass needle will point straight down, or up, respectively. It is often described as being similar in nature to the field of a bar (e.g. fridge) magnet. However the ....etc

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