Answer / jobby c johnson

in process control selection of a particular controller is
based on the application and what are process parameters that
you are going to measure.
based on the external conditions you have to design the data
acquisition system. some times the voltage level will not be
matching, so you requires a voltage translators(eg:).

there will be a process requirement saying that you need the
overall response of the system with in this much time, with
minimum error etc based on those parameters you have to tune
the controller parameters.

In electronic board one fuse(rating 230v,100ma)showing 2.5 ohms with multimeter,then the fuse is healthy or not.

4 Answers  

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What s the exact height of installed transmitter?

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There is a problem with our HART475 it is not communicating with smart devices error becomes "NO DEVICE FOUND"we have insert 250ohm resistance as per requirement but invain plz tell me the solution?

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Working principle capacitance type level transmitter

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selection of the zener barrier for the hazardeous area zone 0

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Explain, and give a real-world example of MODULATING control

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what are different types of cables used in instrumention how to calibrate a level transmitter online ( rosemount )

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why the discharge pressure of ID fan showing negative at fan running condition.(boiler operating condition.)

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I have one DP transmitter of range 0-500mmWC i have to calculate its range in M3/hr for flow measurement so whats the formula.

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how many type of control valve?

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How will you calibrate an interface level trol/normal level trol in line and in w/s?

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what is load line in control valve?

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