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What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
2090i am working in the automation company...i want to just know how actully pid control valves are tune????...
1 4810What is standard of DCS panel design?and what is step of DCS panel design?wiring and type of connector(screw or DB connector)
2111What 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.
2226Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.
2085Describe the basis on which alarms should be generated and how their associated priority is determined
3 5185In 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 4153Define 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
1841What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?
2099Post New Instrumentation Questions
Definition of reverse and acting controllers:
A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.
flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty
How can you add value to this Industry if offered the job?
whats the abbreviation of IOP? is it instrument of power or input open problem?
what are the selections available in configuring a burnout protection of a controller? thanks
HOW CREATED LP & HP PRESURES IN DRUM FOR DRUM LEVEL MEASUREMENT!
How a conductivity sensor & analyzer work at boiler, whats the principle & science is beyond this,How conductivity sensor sence & convert signal & move toward analyzer & analyzer show reading in percent? also what is temperature compensate option in conductivity analyzer
How can i copy program (parameter) from mm440 (V.F.D.) by using BOP?
How ejector(or)evactor air pump is working in thermal power plant?
what is metal of piston ring
If fire would be inside the plant which fire detector is to detected the fire.
How servomotor controls throttle valve of TURBINE?
if in a level tx height is given, how u calculate the ranges of the tx?
What is the difference bitween control net scaner and device net scaner
