ahmed allam


{ City } cairo
< Country > egypt
* Profession *
User No # 104464
Total Questions Posted # 2
Total Answers Posted # 4

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Questions / { ahmed allam }
Questions Answers Category Views Company eMail

can i calibrate DP transmitter online (while Tx in Service) if yes ,how?

CEPC,

1 Instrumentation 4799

How can i solve the problem of ROSEMOUNT 5300 guided wave level transmitter of full range? For more clearfication , another guided wave level transmitter VEGA brand have the same problem and i solved it by drain the champer from water and make "false signal suppretion" from transmitter push buttons it's configuration to tell the transmitter to avoid any built-up signal ,,, so my question how can i avoid the problem that rosemount read full range while the champer empty or any other ????

 1 Instrumentation 2200



Answers / { ahmed allam }

Question { ABB, 27199 }

WHAT ARE MAIN DIFFERENCE BETWEEN DCS AND SCADA?


Answer

DCS (processor + logic + graphic) = PLC (processor+logic) + SCADA (grahpic)

the different between DCS and PLC+SCADA(HMI) No. of I/O only

Is This Answer Correct ?    0 Yes 3 No

Question { JPL, 3643 }

What properties or parameters to be taken into consideration for protection while selection of Dcs controller.


Answer

if you mean protection of for example power plant
so the most important parameter is scan time of
the controller must be very fast so action be very fast

Is This Answer Correct ?    0 Yes 1 No


Question { Sepam Group, 9357 }

Rtd sensor how to calibrate


Answer

RDT sensor can't calibrate , only RTD transmitter can
calibrate by RTD (PT100, PT1000, .... ) table by using
potentiometer.

or by using comparison calibration.

Is This Answer Correct ?    5 Yes 0 No

Question { L&T, 4425 }

Before erect the instrument what should you do?


Answer

verify the instrument with technical data sheet and spec

Is This Answer Correct ?    2 Yes 1 No