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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
 
what is the main supply source for pressure transmitter?   1
pls tell me whethere flame proof HMI's are available or every HMI is manufactured by considering flame proof standard.   3
What is the procedure of mounting new positioner on pneumatic control valve?   1
what is plc communication? Siemens 2
who discoverd ohms law? HPCL 6
what is difference between pressure,flow and level control valve.   1
Difference b/w SCADA & DCS Siemens 8
How many problems can be occurring in solenoid valve? And how it can be rectified? adgas 1
generally transmitter power supply having some range(12v to 35v) but the out put(4-20 mA) must same for given input.If we vary the power supply voltage then output mA also to be change according to V=IR. Is there any voltage regulator in the transmitter ?   2
what is DCS? Reliance 24
Please any one can explain how to calibrate transmitter (smart) online with out remove from the container suppose it is interface level or static pressure level measurement we dont want to remove transmitter from the container mean it is running plant please give me detail. thankx brothers KNPC 1
flow transmitter range is 0 -500 mmwcc but the transmitter shows 12 ma for o mmwc instead of 4 ma ...how to solve this problem when we apply 375 mmwc it shows 16 ma   3
 
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