Answer Posted / chandra prakash
process control means control of parameters
(pressure,temp,flow,level etc)essential for any process.
| Is This Answer Correct ? | 16 Yes | 3 No |
Post New Answer View All Answers
what is RTV function in in process control?
what is easiest way to read STL language in PLC?
How do you identify between actual alarm and false alarm in a Temperature Transmitter in SCADA based Control System
How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.
Do you have reference list?
what is the advantage of submersible level transmitter compare to ultrasonic level transmitter?
please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?
How to Calibrate Temperature Switch in field
What is wet leg condition and why is it used?
why we are using digital signals for I/O & how to measure this signals is getting or not ?
1. For Steam drum level signal, why do we compensate with drum pressure signal? 2.For main steam Flow signal is comensated with main steam temperature signal and main steam pressure signal why?
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.
Draw a wheatstone bridge circuit showing supply, meter and 3 wire RTD connection
We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.
What is eddy current? Describe the operating principle of proximity probe.