Zener Diode Barrier Principle
The zener diode barrier works by diverting potentially dangerous energy to ground before it can reach the hazardous area. Zener
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AC Motor Braking
There are several different methods useful for causing an AC induction motor to brake, or slow down: DC injection Dynamic
Feedback Control Loop Questions & Answers
Feedback Control Loop Questions & Answers 1. With adequate gain and inphase feedback any system will: a. Drift b. Oscillate
Continuous Flow Measurement
The Continuous measurement of fluid flow is arguably the single most complex type of process variable measurement in all of industrial instrumentation.
Thermocouples Connector and Tip styles
In its simplest form, a thermocouple is nothing more than a pair of dissimilar-metal wires joined together. However, in industrial
What is a Thermocouple ?
RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric current in order to function as temperature
Guided-Wave Radar Instruments Diagnostics
Modern radar level instruments provide a wealth of diagnostic information to aid in troubleshooting. One of the most informative is
Radar Level Measurement
Radar level instruments measure the distance from the transmitter (located at some high point) to the surface of a process
Differential Pressure Transmitters Compensated Leg Systems
Differential Pressure Transmitters Compensated Leg Systems The simple and direct relationship between liquid height in a vessel and pressure at
Pressure Transmitters Filled impulse lines
An alternate method for isolating a pressure-sensing instrument from direct contact with process fluid is to fill the impulse lines