Answer Posted / abi
PLC is programmable logic control, while DCS is distribution
control system.
PLC is for operating certain number of devices on the basic
of analog / digital outputs. Normally the output of
industrial devices is in analog, which comes to PLC kits
where they are converted to digital with ADC than executed
instructions according to program specified by user. In
this way we can control multiple devices.
Graphics page available in DCS ( for process diagram) ,it's
easy for process but this facility is not available in PLC
| Is This Answer Correct ? | 4 Yes | 4 No |
Post New Answer View All Answers
A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?
what is installation and commissioning of (fat & sat) of power plant dcs ? this question keeps in desirable conditions of one company .
How to calculate P,I&D value in PID controller ?
Which tank weighing system is better to install (Accuracy point of view) 1) Tank weighing system with 3 load cell or 2) Tank weighing system with 4 Load cell
how to calibrate corollaries (Mass flow meter)?
what is difference between fork type and capacitance type level switch. where it is using
How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?
What happen if I install my pressure transmitter below the elevation of pipe in natural gas service?
HI, can anybody give details about GAS TREATMENT PLANT CONSTRUCTION,as INSTRUMENTATION ENGINEER what are the responsibilites.what are the instruments mainly instrumentation engineer will deal with
how to rectify the poor signal strength in utrasonic digtial flow meter ,model:ge digital xce868i
how do i tune dearator pr control valve using PID. we set the set point is 0.6kg/cm2 now i want 0.5 to 0.7kg/cm2 limits so what should i give p,i,d values. then pls explain how do set pid values for control valve tuning?
why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?
Do you have reference list?
what is insdustrial vibration.who it works. give atleast 2 types of insdustrial vibration
how can leve transmetter calibate in feild .and also put cv and flow plz .....