Answer Posted / ravindraeee
PLC=Programmable Logic Controller
DCS=Distributed Control System
A PLC can be a component of a DCS
A DCS can include Networked PLCs, PCs, or other control
equipment sharing or distributing control of a process or
processes. Key word being "distributed".
| Is This Answer Correct ? | 3 Yes | 5 No |
Post New Answer View All Answers
installation process of orifice,a question asked for confusion creation in interview by BARC 1.if orifice is tightly fitted with pipe ,it will act like venturi 2.if orifice is left hanging in between liquid it will not create the pressure difference exactly,
how do u calibrate the vacuum transmitter if it shows more reading
Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =
on interface level transmitter model(RTG3302-EMERSON) What is threshold valve how can we select correct threshold value T1,T2,T3,T4 When interface water & hydro carbon
what can of fault ofently come in vibration mesurement?
What is difference between “Fault Tolerant” & “Fault avoidance” PLC? Application where these system s are used?
If P will increase then what will happen with PID?
Draw a great bridge circuit.
what is the electrical operation procedure for switching on 27.6MVA electric furnace.
Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,
How can a d.p. Transmitter be calibrated?
why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V
Give 2 application of quartz crystal used for process parameter measurement.
how to calculate range of level transmitter?
Turbidity analyzer working principle ?