ultrasonic type level measurements

sound waves with frequency greater than human hearing range. ie frequency greater than 20kHz is termed as ultrasonic waves (sonic means hearing range and  ultrasonic means above…

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current and voltage measurement

Current and voltage, two  variables which have a great importance in engineering technology . Electronics systems, instrumentation, telecommunications,Robotics,house hold applications, utilities,we can sense them in …

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Absolute pressure and gauge pressure.

What is Absolute pressure and gauge pressure.???They are  very important terms in pressure measurement applications .Before understanding the concepts of absolute pressure and gauge pressure…

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Instrumentation

Instrumentation....Instrumentation systems.........process instrumentation...Instrumentation and control...automation and controlWhat are they?Suppose you are in a industry. Say in a refinery. What is happening in such industries .???Making…

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Ladder logic exercise 1

Two push buttons are wired to the PLC, one for start a motor and another for stop .We are using failsafe design .ie  in field…

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