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Question
what is the difference between Digital output DO signals /Commands for  
start/stop  and Solenoid valves ??
 Question Submitted By :: Goldengineer14
I also faced this Question!!     Rank Answer Posted By  
 
  Re: what is the difference between Digital output DO signals /Commands for start/stop and Solenoid valves ??
Answer
# 1
DIGITAL OUTPUTS SIGMALS MEANS NO OR NC CONTACTS & DO COMMANDS
MEANS CONTACT CHANGE OVER ALONG WITH VOLTAGE 24 V DC 0R 230 V
AC
 
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Other Instrumentation Interview Questions
 
  Question Asked @ Answers
 
what is the difference between signal cable and ontrol cable? Essar 14
Induction type 1-p wattmeter reads .. a) true value b) apparent value c)volt ampere value Engineers-India-Limited 3
which is the best type to measure level of a Tank(water). Displacer or Differential Pressure method?   2
How can we check Zero of DP type Level Transmitter onside? Birla 4
what is remote mount with MTA option? (In case of Dual Sensor Vortex Flowmeter,rosemount has written in its catalog drawings).   2
Where we cant instal mass flow meter.   1
what are the steps to follow force a particular input or out put from ics triplex esd system?   1
How to work DCS? how to get the signal from Field Instruemtns to PIB to Console? Invensys 2
What is require for PLC Programming?   6
what is the significance of hook up   2
where Pirani gauges are uesd in case of pressure measurement?   3
What is meant by Fail Safe Condition in PLC?   3
 
For more Instrumentation Interview Questions Click Here 
 
 
 
 
 


   
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