Can anybody tell me application of PLC,DCS,SCADA.

3 Answers   Reliance,

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We do have a problem in the company that is one PT connected to PlC which is mean 1 out of 1 in PLC system we do have the PAHH is 55 mbar and PALL 8 mbar with a timer of 15 sec for the PAHH the problem started when PAHH goes more than the set point which is 55 it reached up to 71 but due to timer doesn't trip . We force it and we checked everything nothing there . We replaced the transmitter problem still there the reading goes more than the 55 bar the range for transmitte is 0- 60 mbar . So we did loop check , aculaizing valve , wiring all are okay . What the possible causes for this ???

2 Answers   National Petrochemical Company,

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can we change the range of 3151 model level transmitter of rosemount make? present calibration range is 1000mmwc and want to change it to 2000mmwc

4 Answers  

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what are the different types of Protocols? & their applications.

6 Answers   Infosys, Sitara Chemical Industries, Syntel, VSNL,

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WHAT IS A CALLIBRATION? WHAT IS MEEAN BY LOOP CHECKING INCLUDES PRESURE, THERMOCOUPLE,TT,DT?

5 Answers  

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What is three element in drum level?

0 Answers  

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What is Droop? What is Step/Gradient Limiter in Turbine Governor control?

0 Answers  

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what is stability

2 Answers   IOCL,

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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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what is the difference between DELTA-V & FOUNDATION FIELD BUS

4 Answers  

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how to install the Ph and Conductivity analyser? is there are any procedures which has to be maintained.

2 Answers  

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1.how can calibration temperature transmitter and flow transmitter? 2.

0 Answers   Gulf Jobs,

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