working principle of lvdt?

2 Answers  

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how to make a calibration for differential pressure

2 Answers  

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What is NAMUR standard and why its allways reletad with Sollenoid

2 Answers  

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our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS

0 Answers  

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Can a pneumatic control valve work without positioner?

4 Answers   SMC,

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what is the difference between SMART and tipical transmeter ?

3 Answers   Sirte Oil Company,

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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.

0 Answers   MNC,

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what is skin thermocouple?

3 Answers  

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how to calibrate temprature switch and flow switch ?

1 Answers   Adgas,

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Draw a complete P&ID of a flow suction tank indicating all control & protection equipment. Indicate all its inlets and outlets. Explain the controls for this system

0 Answers  

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What is the difference bitween control net scaner and device net scaner

0 Answers   Binani,

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hello sir/madam, I,Subramanian need 5yrs placement papers of officer trainee of Instrumentation technology.pls send to this mail id mani_nxtgen@yahoo.co.in please do the needful. with regards, subramanian.v

0 Answers  

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