Answer / s

Hook-up Diagram having installation details like
vaves,tee,elbow sizes.It is a detailed diagram for
Particular equipment installation which is not available in
P&ID.

Answer / cpo

SS tubing come in standard max length 6m

Answer / chepin

S answer is right. Could some one pls share sample of the
hook up drawing.

Answer / www.islamqa.com

I think it's related to system response time, 6 meters
limitation to make the feedback pressure signal built up
through the pipeline and arrive to I/P or controller in
suitable time.

open loop has no feedback so there's no limitations.

Regards,

Ahmed Sabry
Control and Instrumentation Engineer
GPC - General Petroleum Company
ahmedsabry.online@gmail.com
CELL.: 00 2 0121367310

Answer / ladla

In open loop there is no feedback

i/p converter always for supply pessure from 3~15 psi only !! And from where this converter bleed the air.

2 Answers  

what is the Difference Between Domain and Station?

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I HAVE GOT TYPICAL PROBLEM WITH THE TEMP.INDICATION. THE PROBLEM IS THE K-TYPE T/COUPLE OUT PUT IS CONNECTED TO A INDICATOR.THE INDICATION FLUCTUATES SOME TIMES AND SOME TIME IT IS STABLE. WHEN I CHECKED OUT PUT OF T/COUPLE THE MV WILL NOT VARY. WHERE AS INDICATION FLUCTUATES. WHEN I GIVE MV SOURCE TO T/COUPLE EXTENSIONCABLE FROM THE FIELD IT INDICATION IS STABLE. WHEN GIVE MV SORCE TO INDICATOR ITS INDICATION IS STABLE. PLEASE CLARIFY.

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what is commissioning & pre commissioning , explain with difination

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how u calibrate pneumatic n motorized c/v?

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Explain types of valves?

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Dead weight tester & comparator for calibration , which is more accurate , what is the application.

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Can be operate control valve without positioning if yes ? how and why?

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draw shematic diagram of c/v positioner(smart type)?

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How to calibrate smoke Dectector

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