Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Textbook Question
Chapter 19, Problem 1RQ
What is the function of a proximity detector?
Expert Solution & Answer
To determine
The function of a proximity detector.
Explanation of Solution
Proximity sensors or detectors are used to sense an object's presence without touching it directly. It stops the detector from wearing and allows it to handle hot red metals. Proximity detectors work on different principles. Many metal detectors detect only iron metals, while others could sense all types of metals.
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A) In a factory, an s-type pitot tube was used to calculate the velocity of dry air for a point
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Calculate the velocity at that point (ft/sec) using following conditions:
●
•
•
Pressure = 30.23 ± 0.01 in Hg (ambient)
Pitot tube coefficient = 0.847 ± 0.03
Temperature = 122 ± 0.1 F (stack)
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•
AP = 0.891 ± 0.002 in H2O (stack)
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Chapter 19 Solutions
Understanding Motor Controls
Ch. 19 - What is the function of a proximity detector?
Ch. 19 - What is the basic principle of operation used with...Ch. 19 - What is an oscillator?Ch. 19 - What is the basic operating principle of operation...Ch. 19 - What type of electric circuit is used to increase...Ch. 19 - Name two types of proximity detectors used to...Ch. 19 - What is the maximum range at which most capacitive...Ch. 19 - How is it possible for an ultrasonic proximity...
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