mohamed hega


{ City } sammanoud
< Country > egypt
* Profession *
User No # 114937
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Total Answers Posted # 4

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Questions / { mohamed hega }
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Answers / { mohamed hega }

Question { Daelim, 2170 }

why in vortex flow transmitter dcs range is configuring less than sensor range. eg (sensor range 500-25000 kg/hr and dcs range 0-24000 kg/hr).


Answer

range must be the same in both transmitter and dcs ,to give accurate representation of flow

Is This Answer Correct ?    0 Yes 0 No

Question { Hindalco, 4813 }

what is principal of pressure transmitter?


Answer

we have 3 types
based on resistance (strain gauge)
based on capacitance
based on mechanical resonance.

Is This Answer Correct ?    1 Yes 0 No


Question { BW Instrumentation Electrical, 3269 }

How do understand by hart protocol?


Answer

Hart stands for Highway addressable remote transmitter.
signals are in form of mA (4-20) current loop
so that it is not effected by wire resistance.
but it is slow with respect to other types like fieldbus ff ,profibus and modbus.

Is This Answer Correct ?    2 Yes 1 No

Question { ICI Pakistan, 12634 }

What is the difference between pt100, pt500 and pt1000 RTDs?


Answer

This number 100,500,1000 refers to the reference resistance of the Rtd.
As temperature changes ,its resistance changes and temperature is function of this change.

Is This Answer Correct ?    4 Yes 2 No