charankumar.t


{ City } surat
< Country > india
* Profession * engineer
User No # 94887
Total Questions Posted # 1
Total Answers Posted # 4

Total Answers Posted for My Questions # 1
Total Views for My Questions # 2959

Users Marked my Answers as Correct # 6
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Questions / { charankumar.t }
Questions Answers Category Views Company eMail

What is the use of +/- 20ma in analog measurement,and which instrument gives +/-20ma output

 1 Instrumentation 2959



Answers / { charankumar.t }

Question { Jindal, 16788 }

deference between DCS and PLC including date processing and
architacture.


Answer

Nowadays we cannot differentiate Plc and Dcs ,we can use
for both variable control & digital control

Is This Answer Correct ?    1 Yes 0 No

Question { 8297 }

Why do we go for 4-20mA? why not other standara?


Answer

We are using 4 -20 ma because we will get linear current
with respect to 24 V,so i most of cases 4-20ma is used.
If u want to try plese plot a graph and check.

Is This Answer Correct ?    1 Yes 1 No


Question { Saadi Cement, 5675 }

how we convert Mili ampere
to temp txt,level txt,flow txt,pressure txt range value


Answer

in above answer1 why not max amp value should be 20ma

Is This Answer Correct ?    1 Yes 0 No

Question { 4546 }

what are level of automation & how these are distinguished ?


Answer

There is no anyy standard for level of automation,as i know

Level 0: field devices
Level 1: PLC,Dcs
Level 2: Model Servers or main machine to predict online
setpoints
Level 3: Production Planning/MES
Level 4: ERP(SAP)

Is This Answer Correct ?    3 Yes 1 No