Answer / thirumalai

mantaince in software side is about the DCS backup of histroy data , ERDB file eys

If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used? Please tell me its Calculation formula.

5 Answers   MOL,

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what is difference between hart signal and analog signal (4 to 20 ma)

2 Answers   Takreer,

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define COMPENSATION??

4 Answers   Bosch,

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Why 24VDC power Supply is used as standard for all loop powered transmitters?

8 Answers   Lupin,

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what is the way of measuring air flow in air duct?explaim instruments used and DP creation in line?

3 Answers  

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what is diffrence between analog card and digital card in plc.how analog card work,Please explain in detail.Please send it on abhi_vyas@sify.com

6 Answers  

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1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

0 Answers   IOCL, Lakshmi Machine Works,

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How much flow is passing through 6 inch line? There are no gauge, no any transmitters in line.

3 Answers  

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what is the use of conrol cable..?

1 Answers  

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why we are using -24 vdc in plc?

1 Answers   CGL,

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What are de-saturators?

0 Answers  

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Foe selecting control valve if i have the min,normal & max data of flow rate,inlet pressure& outlet pressure,inlet tem.&density than how can i assure that these data are correct,pl. let me know if therew there is any method to check it.& also how we assure that the Cv we get from this data is suitable for valve for controlling require flow.

3 Answers   HPCL,

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