Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between a PLC (Programmable logic
controller) and DCS (distributed control system)?
- 7 Answers
- 13156 Views
- I also Faced
- E-Mail Answers
Answer Posted / sooraj unnithan
Number of pid blocks are more in dcs compared to plc
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the constant voltage unit?
how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?
Describe how to use megger to measure the earth resistance and insulation resistance
-/5A. What is the meaning and limitations of this in energy meter constant. It is a 3 phase LT Energy Meter. If this Energy Meter is connected through a CT of ratio 200/5 Amps, then what is the multiplying constant and how its will be calculated.
what is the PC interface and software for connection to ABB logic module “ LM011-CE18RAC “ ( for Programming ) ??
what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.
components of control circuit belongs to control valve
What is Positive Calibration and Negative Calibration?
Square root calculation for dp flow transmitter?
How INtools is useful for routine Instrument maintenance?
I want measure the volumetric flow of gas in waste heat recovery Boiler?Tell me how and which type of instruments required. Plz mail me:naba02222@gmail.com Sam please post the answer .
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 =
the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)
Why flow/pressure transmitter before control valve?
1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?
