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 Categories >> Engineering >> Instrumentation       
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  Question  Asked @ Answers Views     select
What are the key components of control loop?  1  1433
what is the meaning of wet leg & where is it used?  1  1472
What are the reliability data ,like failure rate etc,for bently nevada systems & vibration probes.  1  766
please anyone suggest me some good intools training institutes with their place and contact nos. ABB   1  617
square root calculation for dp flow transmitter? give me a explanation with example  3  3897
plz... clarify my answer, how to calibrate vaccum (DP)leveltransmitter,it is hart. (digital).DETAILS:(coloumn)closedtank height 2650mm,and tx range is 0-1500mmH20. KNPC  1  725
what happen if i install my pressure transmitter below the elevation of pipe in natural gas service. Also support your answer C2C  3  1154
What is Cryogenic?  2  738
What are the automatic controller MODES? DEWA  2  1145
what is coriolis principle for mass flowmeter? ABB  4  2458
why we use the ac supply load cell>?can we use the dc supply load cell?advantages and disadvantage of the ac supply load cell?  0  714
I will attend an interview with GasGas company for a position of Instrument Technician ( Offshore )in next month can anyone tell me what questions they will ask. Thanks in advance. RasGas  0  161
how to use level tranasmitter in closed tank application.? Dalkia  3  1638
with the help of suitable diagrams different types of control valves  1  685
if we have 450 mm heigth boiler drum level ,so what is span & zero value for a dpt tranmitter  1  1321
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Un-Answered Questions
 Question Views Asked at   Select
What are the materials use for COntrol Valve body? 155 Qatar-Petroleums
Boolean algebra 150 CCIE
can u briefly explain aboutan aryton shunt multirange DC ammeter? 658  
what is instrument philosophy 193  
In control valve there are two type of valve seat we can use metal to metal seat & soft seat.On this valve seat i have following doubt. 1)I have never seen practically the internal assembly of valve so my doubt is that basically weather the seat is soft seat or metal its basic MOC is same as valve body(SS or CS) only in soft seat we are using PTFE ring & place on valve seat & in metal this PTFE ring is not threr am i correct??????? 2)what are the common general rule for using metal to metal seat & soft seat,means its depend on process parameter like liquid,gas, steam & on valve leakage class. 242  
What are the type of bonnets in the control valves? 66 CCIE
Explain about the leakage class of the control valves 63 CCIE
what is moisture probe? What are there types? What is there working principle and how they works? guys this is one of technical question I had ask in interview. If you know its answer please let me know. The interviewers were more interested in microwave moisture probe, so if you find its any link please just forward me on my mail Thanks in advance. 132  
1.what is the effect of vapour presuure in orifice plate flow measurement 2.which is more effective 2 pressure sensors or one single differential pressure sensor in orifice plate measurement to design a v/i converter and i/v converter many type of thermocouple are there many leads are there in thermocouple measurement pressure sensors are connected in level measurement in differential pressure method 7.what is the output of capacitive pressure sensor (ac or dc),how its o/p is signal charactarized 8.what is the physical meaning of discharge coeeficient,why it is calculated,orifice plate what is its value,why it is less than 1,Q at upstream is equal to or not equal to Q at downstream of orifice plate why?what is vena contracta in orifice plate 9.why rotameter is called variable area flowmeter,it can measure flow even if area is not varying,why it is made tapered a 10 bit counter ,which counter you will prefer to remove self heating error in RTD 12.which is more sensitive pt100 or pt50 13.why thermocouple are connected in parallel 14.what is lead contact error in RTD,how to avoid 15.what is P,PI,PID,PD controller,why there is no ID controller 16.what is override,split range,sequential,ratio,feedforward,cascade controller 17.why we moved from SR to JK and then JK to master slave JK flipflop,give correct reason to measure level of a closed container which contains vapour and liquid,remember no vapour gas should be leaked,so ultrasonic and capacitive is not an option,design another method to design horse race counter including sensors and signal conditioning element 20.what is bevelling 189 BARC
what is function of DCS , and how is it work , explain with difination 40 Bapco-Bahrain-Petroleum-Company
I am manjunath having exp in maintenance of chemical plants,know i want to do a design course INTOOLS,after doing design course can we get jobs in design field.sinve i dont have design exp.. 106  
what is the difference between Cv and air consumption? why the customer needs Air consumption details? 164  
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