Answer / sureshkannah.r

Diff.pr.gaue compared with magnehelic gauge or manometer
used "T" pneumatic fitting to connect the "+" end (both
test gauge and master gauge)high pressure side and low
pressure side respect with atomsphare.And fine AFR used to
regulate the air pressure in + side and compared the botth
gauge.

Answer / selva

the defferential presser transmitter give to 24v dc supply.
then high side give presser then calculate range.

In dcs contol valve parameters showing like this Gain=1 or 2 , ti=7 sec, td=20sec. But temp,pressure,level control valves we are using in which type parameter side using ti,td clearly tell me

1 Answers  

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If a control valve is hunting means means if we are giving 50% to the cv, the cv will open at 51% then slowly slwoly it will reaches 49% , so what to do for solve this problem. The cv is double acting and mounted for anti surge operation, it having 4 nos. volume booster, one sov, one positioner, etc..?

0 Answers   QAFCO,

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i have one tank of 500mm height, which is in under vacuum of 735 mmHg, I want measure level of the same using DPT , SO WHAT WILL BE THE URV & LRV, DENSITY OF THE TANK FLUID IS 0.95. is there necessary to fill the LP side with fluid.

7 Answers  

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i want to know for good instrument engineer or success how many software knowledage required & from which university

0 Answers  

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

0 Answers  

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who discoverd ohms law?

6 Answers   HPCL, Patni,

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GIVE BRIEF DESCRIPTION ABOUT "DCS"

2 Answers  

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GWR radar transmitter working principle?

2 Answers   Tata Steel Limited,

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How the sizing of the analog signal cable is calculate?

0 Answers   Reliance,

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why we connect digital multimeter in series for dc current measurement and parallel for dc voltage measurement.

4 Answers  

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what is the Instrumentation?

9 Answers   Gulf,

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what is Automation?

3 Answers  

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