Answer / v.poornachandran

A distributed control system is computerized control system for a process or plant usually with a large number of loops,in which autonomous controllers are distributed throughout the system

the output of the common trasmitter protocol in qatar gas are the following

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in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

1 Answers   Sirpur Paper Mill,

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Which language of programing is popular? how can i learn it ?

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What skill/s does the Instrument Technician has?

6 Answers  

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what is radar type level transmitters and its basic principle and how to calibrate it

4 Answers   ABB, Inovonz,

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what diffrence b/w plc s7200,300,400

0 Answers   IFFCO, Reliance,

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model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com

0 Answers   Jindal,

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What are primary elements of measuring pressure?

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How to Calibrate Ultrasonic Level Transmitter in field

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what is Pre- commissioning.

5 Answers   Saipem, Takreer,

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While preparing the graphic diagrams trend display, 3 types of trends are prepared by Yokogawa system vender. These are for process variable, manipulated variable & set point variable. Why these 3 trends are required? Explain the purpose of these 3 trends.

1 Answers  

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How to get Cv of control valve having following parameter ,i.e inlet pressure 4.5kg/cm2 outlet pressure 1 kg/cm2 specific gravity 0.808

3 Answers  

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