Interested to Buy Any Domain ? << Click Here >> for more details...
1,why we use 4-20 ma output of all instrument qhy not use 0-
20,
2,what is the different between PLC & DCS.
3,how can we meaure maximum span of new flowmeter if not
given any information.
- 4 Answers
- 12495 Views
- Reliance, I also Faced
- E-Mail Answers
Answer Posted / narendra mishra
suppose 0 to 20ma is used where 0 for
min.process value and 20 for max.then if
feed back cable get shorten or erthed or
broken it wil show min process value.where
in case of 4 to 20ma it will show "bad".
Plc are used to handle specific area where
DI DO signals are required like burner
managment system.plc response time is in
milisec. And that of dcs is in microsec.
Max span can be found by taking it online
and interfacing it with HART.
| Is This Answer Correct ? | 13 Yes | 4 No |
Post New Answer View All Answers
what is intrinscily safe system and where we use?
Q- What are the application in which PNP transistor is preferred over NPN ?
what is KV and XV valve
what are the selections available in configuring a burnout protection of a controller? thanks
why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature
what is isloted barrier how it works and what are the main purpose.how it make safe area.
line up procedure for dp type flow transmitter?
Gas equation
How to calibrate an pressure gauge with yantrika test bench?
What is Erosion in a control valve?
what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?
What is furnace draft control?
can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.
How to Calibrate Coriolis Flow transmitter in field
in valve is constructed as per SME B 16.34, then which standard is used for fire testing of valve?.
