Interested to Buy Any Domain ? << Click Here >> for more details...
Why 4-20mA SIGNAL IS PREFERRED OVEA A 0-10v signal?
- 5 Answers
- 12122 Views
- I also Faced
- E-Mail Answers
Answer Posted / b_saravanakumar
We can use 0-10 volt also for signal. But while signal
transmission voltage drop will occur on lead wires. Also
voltage will have noise due to this we may loose signals at
receiving end. To overcome this we are using current
(4-20mA) for signals.
| Is This Answer Correct ? | 16 Yes | 7 No |
Post New Answer View All Answers
What is modbus?
Whether the DI, DOs shields can be connected with Analog Input Shield Earthpit?
model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com
How to calibrate the flow transmitter
Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264
Why do we floating DC in DC system.
If relative y axis vibration sensor is by passed, and relative x axis and absolute sensor is left working. how much monitoring i would have risked?
What is megering????
Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...
What is eddy current? Describe the operating principle of proximity probe.
Explain PID, ON/OFF, Controls
which type of zones used for boiler? & why ?
What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?
How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?
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.
