Answer / praveen kumar

First check project what kind and what parameters you want
to control like flow,temperature,level,pressure and then
acccording to that how many inputs y needed then y decided
for PLC ok

Answer / solomon

first study laddder logic diagram.In programming i/o
addressing only difference for different plc make.allen
bradley is the best plc.

cheapest instru-- PMMC, EDM, rectifier, thermocouple.

3 Answers   ONGC,

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WHAT IS THIS INSTRUMENTATION?

7 Answers  

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What is the difference between floating and fixed voltage?

1 Answers  

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A pressure differential gauge type of instrument has a manifold with 2 isolation valves (hp and lp),2 vents(1 each for hp and lp) and 1 equalizing valve. Determine the position of each valve(either fully closed or fully open) when troboulshooting to: 1. zero the transmitter. 2. determine if there is a block in the impulse line. 3. determine if the gauge is functioning properly. The process fluid is water.

1 Answers  

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what is meaning of software redundency and hardware redundency?

2 Answers   Honeywell,

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Programmable Logic control.

0 Answers   CCIE, NCVT,

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how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

0 Answers   Chevron Phillips,

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How to calibrate level switch?

2 Answers   Power Plant, Sabic,

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In most instances, Inertia processes are quite uncommon. Give an example of a combined Resistance and Capacitance situation.Describe an application, which according to your understanding of the subject matter, comprises of both Resistance and Capacitance effects.

0 Answers  

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what is span adjusment of transmitter? what is the function of positioner/

2 Answers   Kent,

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why 1 to 5 vdc is used for output measurment

4 Answers  

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What is transmitter

2 Answers   GNFC, QNFS,

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