Answer Posted / mathan.j

Analog card means the signals may interms of 4-20 ma , 1-5 v
ie variable source of signals.
Digital cards means the source of signals may interms of
binary o & 1, no & nc contacts ie 24v or 0v.

for example transmitters are produce 4-20 ma ,and it is
called analog input.

limit switches ,On & Off switches are called digital
signals.

Manipulation of dead wt. tester double piston type.

2038

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why using negative supply for bentley nevada vibration system ?

2134

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How servomotor controls throttle valve of TURBINE?

1945

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selection of the zener barrier for the hazardeous area zone 0

2249

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how many type of plug are used in pneumatic control valve,name them.

5426

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why we should maintain neutral earth voltage below 1V while calibration? why cant it be 1.2V or 2V

2427

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what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail

1749

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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.

2169

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how many maximum enter 2mm Dia solid cylindrical pipe into 8mm Dia hollow cylindrical pipe. give answer with calculation.

2039

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how radio frequency level probes works with its controller ? what is its principle ? pls give me brief explanation?

1878

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To become an Instrument DESIGN engineer, is there any softwares or training to become Instrument Design engineer, plz suggest me, Iam very much interested in designing.

3454

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we have level transmitter for h2s04 storage tank capacity 10k ,always there are failure of transmitter due to failure of magnetic floats ,please come up with solutions at the earliest.

2055

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Decibel.

2540

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while i check zero check for dp flow transmitter some fluctuating came (0 to 458 kg/h) what is the reason?

1893

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How will you test a transistor with a multimeter?

1088

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