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Question
What is the DIfferences between SMART transmitters and
PROFIBUS DP/PA Transmitters?
 Question Submitted By :: Instrumentation
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Basically,smart transmitters are used for sensing the
analog signal then,smart transmitter digitalized it & give
it range& adjustment.it corrects it by many factor.it is
used only in non hazardous area.this is continuous sensing.

apart from that,PROFIBUS DP is decentralised periphery
used in non-hazardous area & PROFIBUS PA is process
automation used in hazardous area.They is joined through
coupler.PLC Periodically receives data as a packet.
 
Is This Answer Correct ?    5 Yes 0 No
Er.shah Rahul
 
Answer
# 2
Basically trouble shooting point of view, multimeter if
enough to trouble shoot the SMART Transmitter. but Profibus
we need some kind of PLC loaded PC's
 
Is This Answer Correct ?    1 Yes 0 No
Rathina
 
 
 
Answer
# 3
PLC DCS
 Fast logic scan (approx. 10ms) is required to perform
motor or motion control.
 Control loops require deterministic scan execution.
perform motor or motion control at a speed of 100 to 500 ms
 Redundancy may not be cost justified.
 System redundancy is often required.
 System can be taken offline to make configuration.
 Online configuration changes often required changes.
 Analog Control: Simple PID only.
 Analog Control: Simple to advanced PID control up to
Advanced Process Control.
 Diagnostics to tell you when something is broken.
 Asset Management alerts you to what might break before
it does.
 
Is This Answer Correct ?    1 Yes 0 No
Dibyendu Das
 
Answer
# 4
SMART Stands for Self-Monitoring, Analysis and Reporting Technology which is basically a technology and whereas Profibus DP/PA are transmission protocols. Like HART, Foundation Fieldbus etc. 
Is This Answer Correct ?    1 Yes 0 No
Vikas Dhiman
 

 
 
 
Other Instrumentation Interview Questions
 
  Question Asked @ Answers
 
In oil & gas industries and petrochemical industries, there are classification of zones like zone 0, zone 1, zone 2. Is there any differences in voltages or power supply supplied for the process instruments, control instruments depending on the zones   1
How can we calibrate the level interface for Fisher® FIELDVUE® DLC3000?if use water to calibrate and our liquid SG are 0.75 and 1 ,Displacer height=14" and How much should be set SG in trasmitter during calibrate,for URV and LRV how shold be set   1
what is the PID controller?   1
What is rated capacity in Control valve   3
In Boiler Drum Level- Level control valve how can it tuning (PID)?   1
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what are the on/off valve precaution? Reliance 1
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Hi, I'd like to know the purpose of MOS (maintenance override switch). At site, these switches are installed in a stanchion with the transmitter (connected to ESD). thank you.   3
How to ensure vibration sensor functioning accordingly.With out using an other sensor. ACC 3
What FLOW METER generally used in Gas plant? GASCO 4
 
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