What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
1615i am working in the automation company...i want to just know how actully pid control valves are tune????...
1 4041What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
1705What are the key features of a Distributed Control System? describing the various layers (sensor through to business system interfaces) as well as the hardware, software and security aspects of the DCS.
1789Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.
1632Describe the basis on which alarms should be generated and how their associated priority is determined
3 3975In closed loop control there are several “blocks” used to show the interactions between the process and the control system. These blocks are referred to as the “process” and the “controller.” Describe the relationship between these two blocks when creating a well tuned control loop.
1 3178Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability
1385What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?
1597Post New Instrumentation Questions
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 3.how to design a v/i converter and i/v converter 4.how many type of thermocouple are there 5.how many leads are there in thermocouple measurement 6.how 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 10.design a 10 bit counter ,which counter you will prefer 11.how 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 18.how 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 19.how to design horse race counter including sensors and signal conditioning element 20.what is bevelling
How would you choose differential range?
What is the minimum rating availalbe for weld neck orifice in market?
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how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?
How an rtd work, and what volts/current goes to a rtd to measure the resistance?
if in a level tx height is given, how u calculate the ranges of the tx?
Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com
what is output of FOUNDATION FIELD BUS transmitter
can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.
Boolean algebra
sir ,iam in dem urgent need of HPCL Paper of Instrumentation Branch plz send me at your earliest convenience at ujjwal_sharma1983@yahoo.com
If we increase only P what will be controller action ?
What is wet leg condition and why is it used?
which type of signal used in instrument?
