An exciting development in industrial instrumentation is the…
Phasors are to AC circuit quantities as polarity is to DC circuit…
The very purpose of physics is to quantitatively describe and explain…
Coy, John J. et. al. (December 2012) Sampled graphic illustrations…
Some self-powered (4-wire) analog electronic transmitters are designed…
Two extremely important principles in electric circuits were codified…
In order to provide an interface between the internal (digital) world…
What is Calibration? To calibrate an instrument means to check and…
The term “grid” refers to the conductors and equipment…
To review, voltage is the measure of potential energy available to…
There are several different methods useful for causing an AC induction…
Finally, we arrive at the loop diagram (sometimes called a loop sheet)…
Valve actuators provide force to move control valve trim. For precise…
A very common form of on/off valve used for pneumatic and hydraulic…
Perhaps the most important rule to obey when using pneumatic…
pH is the measurement of the hydrogen ion activity in a liquid…
A vertical column of fluid generates a pressure at the bottom of the…
A unique form of differential pressure-based flow measurement deserves…
Shown here is a partial listing of principles applied in the subject…
When I began teaching full-time in 1998, most of what I thought I…
