In 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.
Answer / tukaram
Controller: compare o/p with refferance i/p, manipulate & modify the actuating signal.
process:process the system in error free manner.
Is This Answer Correct ? | 1 Yes | 0 No |
What are the uses of orifice plates?
Why Bently Nevada use negative voltage for vibration probes?
What is instrumentation technologists and mechanics?
Whether the DI, DOs shields can be connected with Analog Input Shield Earthpit?
(1) In turbine, what does term CDP, NI, NH, HSSOC, means. (2) What is the purpose of LO overhead tank in turbines.(3) An equipment is certified for EEX, IA, IIC,T6, what do you under stand by this.(4) what is SURGE, and how it is prevented, what is the purpose of bypass valve across AS valve.(5) Give 2 application of quartz crystal used for process parameter measurement.(6) what is meant by cold float of compressor shaft. (7) state four different types of flow measurement. For gas flow measurement mmscfd is the common unit. Expand the unit and specify significance of word S in the unit.(8) what is meant by Gap voltage, in vibration measurement. Normally how much Gap voltage is set and state the reason.(9) what will the new flow factor if D/P transmitter is Re-Ranged from 25” wc to 50” wc.(10) what is the usage of QDV & Volume booster.
what is the diffrence between plc&dcs
4 Answers HCL, Hindustan Zinc,
how many types 0f thermocouples?
we callculat main steam flow by D.P. but where is H.P. & L.P. IN Orfics?
what is orfics working in main steam line. is it increase pressure, velocity of steam flow and dicrease steam flow rate. or any other
A pressure differential gauge type of instrument has a manifold with 2 isolation valves (hp and lp),2 vents(1 each for hp and lp) and 1 equalizing valve. Determine the position of each valve(either fully closed or fully open) when troboulshooting to: 1. zero the transmitter. 2. determine if there is a block in the impulse line. 3. determine if the gauge is functioning properly. The process fluid is water.
If a normal magnetic type flow transmitter that can measure flow, temperature and show this parameters on field, is it possible by any means to get this (flow and temperature) parameters info. On dcs? And if yes then with HART, FO communication or any other communication system?
1 Answers Process Control Technologies,
If I want to buy a pressure switch & 3-way valve for hot water application then witch parameter I should consider.