please can anyone tell me in detail, what's mean by open loop and close loop?

6 Answers  

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I am a instrument technician. recently i attend interview and face one of question for DP transmitter ,the client asking about the calibration of DP transmitter ,am answer the calibration procedure, they will ask one more question. why open LP side in atmosphere? i did not answer that question. so please help me and explain the particular question. Dear firends waiting for your valuable replay

3 Answers   Qatar Petroleums, Samsung,

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need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job

0 Answers  

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In close vessel/ drum why we use d.p. transmitter of -ve range i.e. (-)500 to 0 mmwc.

2 Answers   IMECO, Voltech,

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How many types of sensor

0 Answers   Petro Rabigh,

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what is written on orifice plate?

4 Answers  

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How to calculate P,I&D value in PID controller ?

0 Answers   Jindal Steel and Power, SAL Steel Power,

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why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

0 Answers  

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There are many type of control cable like pair,core,tried, What are defination each one

0 Answers   Birla,

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in split range control system we are using two control valves,but we have only one positioner and one feed back link.so how we use this one feed back link for two control valves?

2 Answers  

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What are different type of instrument cable

0 Answers   KOC,

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How to Calibrate Interface Level Troll in field

0 Answers  

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