- Instrumentation
Selection of a pressure gauge
Definition A pressure gauge is a mechanical instrument. It is designed to measure the internal pressure, vacuum of a vessel or…
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what are ball valves?
Introduction A ball valve is a rotational motion valve .The ball consists of a ball shaped disk .this ball shape…
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How a Globe valve works?
Introduction A globe valve is a linear motion control valve. With globe valves we can start, stop and regulate the…
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Different types of Manometers
Introduction There are variety of pressure sensing elements. Manometer is one of the pressure sensors used to sense very low…
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What are Open Loop & Closed Loop system
Introduction There are two types of control systems namely Open Loop & Closed Loop system …
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Working of an Override Control
Introduction The override control concept is a technique by which process variables are kept with in certain limits, usually for protective purposes. Override control maintains the process in operation but within and under safer conditions. Override control To illustrate override control, consider the simple process shown in Figure A hot, saturated…
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How does a process control work?
Introduction. Process control is the automatic control of an output variable by sensing the amplitude of the output parameter from…
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Flow measurement using SONAR
Introduction Sonar flow technology is a new member to the industrial flow meters.sonar flow measurement principles is distinct from all…
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Direct level measurement techniques
Introduction There are many methods for measuring level ;Direct level measurement techniques and indirect methods.in this session we are going…
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