Answer Posted / mahesh

[ PB M2 O/P ]
[-----[ ]--------[/]--------( )----]
[ i ]
[ O/P i ]
[-----[ ]---i ]
[ ]
[ PB O/P M1 ]
[-----[/]----[ ]-------------( )---]
[ ]
[ PB M1 O/P M2 ]
[-----[ ]----[ ]-----[ ]-----( )---]
[ ]

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

1649

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what is zero and span ?

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SOME OF YOUR QUESTIONS ARE NOT MAKING ANY SENSE SO TRY AND PUT IN A LITTLE BIT MORE EFFORT BEFORE YOU POST A QUESTION. WE WILL ONLY HELP THOSE WHO WE CAN SEE ARE TRYING TO HELP THEMSELVES.

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give some question relative instrument fitter?

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