Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

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how to calibrate any tansmiter by loop or hart calibrator

2 Answers  

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what does mean by analog output trim and where this one used for?

1 Answers  

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Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?

0 Answers  

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if I did short to both AO connections, channel will burn or what? m sure in AI it will damage to channel. But what will happens in AO?

1 Answers  

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please tell me five types of fault of control valve and positioners?please

1 Answers  

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In the field and in the control room different power supplies if used How to handle the ground

1 Answers   ITC Infotech,

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When a field input to plc is coming from 400 to 600 meters and the input is in 24 V DC? So signal cable of which cross section i should select for proper signal to plc?

5 Answers   Exxon Mobil,

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HI FRIENDS IHAVE QUESTION 1.WHAT IS PARTIALSTROKE TEST?WHY IT IS USED ON ESD ON OFF VALVES?

3 Answers   KNPC, Rotork,

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if we have 450 mm heigth boiler drum level ,so what is span & zero value for a dpt tranmitter

4 Answers  

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how u meassure a room temp?in rtd or themo couple?

4 Answers  

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what are the steps to commissioning a DCS system?

2 Answers   BGR Energy,

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