Answer / bunny

DP stands for differential pressure.i.e,we will have a high
pressure and a low pressure.DP=HP-LP.The idea is we will
create a differential pressure in the flow line(by using a
orifice plate,for example) were which the flow has to be
measured and will measure this DP which is proportional to
flow.For that,2 pressure taping will be taken(for HP &
LP)and it is connected to the the HP & LP connection slot of
the DP transmitter through a manifold valve.The DP
transmitter will convert these DP signal to (4-20)mA range
and send to the controller.

Sitrans LR460 Radar level transmitter getting level out or disturbed level during moisture present in the material ie coal in the pccb bunker in CHP.Any suggestions for this problem...????

1 Answers   ABG Shipyard,

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How does SmartPlant Instrumentation interface with physical design (3D modeling)?

0 Answers  

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what is commissioning.

2 Answers   Takreer,

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what is the advantage by using PID controller than P& PID?

1 Answers  

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what should he know if he is an assitent engineer instrumentation in cement industries of experience of 10 - 15 year.

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what is difference between modbus & fieldbus

1 Answers   ABB,

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How DP Transmitter can be calibrated for crud application in floating roof tank?

2 Answers  

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IS THEIR ANY AGEING EFFECT ON FLOW NOZZLE, ORIFICE, MANIFOLD, OR TRANSMITTER ?

1 Answers  

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why we use 4-20 mA for calibration of the instruments.why we cant use 0-20 mA?

5 Answers  

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if RTD damage in plant, how we know?

5 Answers   Reliance,

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What is DCS?

4 Answers   GAIL, Sabic, Trident, Yokogawa,

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Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 Answers  

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