Answer / gopalakrishnan

IT IS THE CLOSED LOOP ,TX SIGNAL GOING TO THE CONTROL VALVE
THROUGH THE CONTROLLER (DCS) MARSHALLING PANEL -AND TO THE
FIELD JBS AND TO I/P(CURRENT TO PNEUMATIC CONVERTOR AND
THEN TO THE CONTROL VALVE IT IS THE CONTINOUS PROCESS.

Answer / praveen kumar

Well Transmitter Measures the process, and Control valve
will control and this is closed loop. The loop from
Transmitter to JB to MRack to CP and the signal is 4~20mA
but in Control valve we have I/P where the signal will
converted to Pnuematic ok

Answer / satish

TRANSMITTER WILL GIVEN OUTPUT TO THE CONTROLLER THROUGH
MARSHLLING PANEL THATS CALL PROCESS VALUE,CONTROLLER WILL
GET PROCESS VALUE AS PER CONTROLLER SET POINT THAN FROM
MARSHALLING PANEL THERE IS TWO WIRE/FOUR WIRE SYSTEM AS PER
MARSHALLING CONNECTION OUTPUT WILL GO TO THE CONTROLL VALVE
THAT CALL MANIPLATED VALUE (MV)

What should be the ideal tapping location for pressure differential transmitter for liquid service. If the tapping taken from the top of the pipe then PDIT will work properly or not. If PDIT do not work properly then what minimum corrective action should be taken in order to solve wrong tapping locations.

1 Answers  

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What is loop checking ?

10 Answers   Kharafi National, Petrofac, Samsung,

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how to connect 3 wire 4-20 mA transmitter in Plc system PLC system and how explain how the measuring data communicate with plc system.

1 Answers  

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please give me the syllabus and sample questions if possible for Instrumentation for Vizag Steel plant MT (Trainee) 2009 exam

1 Answers   Pedvak, Steel Plant, Vizag Steel,

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What is cavitation. what is the effect of it on control valve and how is it prevented.

1 Answers   ADMA OPCO,

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where i can get training in INTOOLS and PDMS in Delhi-NCR OR north part of India. please reply with ur ans. at arunsamkaria@ymail.com

0 Answers  

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Sir, my yokugava FF TYPE LEVEL transmitter us bad, i don't have spares available, i want to replace it with a Rosemount FF transmitter, please tell me what procedure to be followed and what changes to be done in dcs part.

1 Answers   BPCL Bharat Petroleum, OEG,

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NAME ANY TWO ELASTIC PRESURE SENSOR?

2 Answers   DVC,

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what is instrument termination

1 Answers  

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What s PDS & PDMS tools ?its role in instrumentation?

1 Answers  

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Q- voltage source of 12v is driving the circuit.if circut draw the current of 0.5A them source voltage will became 11.8v.what is the power dilevered by source when circuit draw 5A current ?

4 Answers   Ecil,

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what is the Instrumentation?

9 Answers   Gulf,

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