Answer / rajendra singh

In DCS 4 TYPES OF SIGNAL IS USED

1) AI - ANALOG INPUT THIS FEED BACK SIGNAL FORM (4 - 20 mA)
2) AO - ANALOG OUTPUT COMMAND GIVEN FROM DCS (4 - 20 mA)
3) DI - DIGITAL INPUT (FEED BACK 0 OR 1, HIGH OR LOW)
4) DO - DIGITAL OUTPUT (PICK UP THE RELAY 0 OR 1, HIGH OR
LOW COMMAND GIVEN FROM DCS)

Answer / ashish khatana

1) AI - ANALOG INPUT THIS FEED BACK SIGNAL FORM (4 - 20 mA)
2) AO - ANALOG OUTPUT COMMAND GIVEN FROM DCS (4 - 20 mA)
3) DI - DIGITAL INPUT (FEED BACK 0 OR 1, HIGH OR LOW)
4) DO - DIGITAL OUTPUT (PICK UP THE RELAY 0 OR 1, HIGH OR
LOW COMMAND GIVEN FROM DCS)
5) T/C INPUT- FOTR THERMOCOUPLE
6) RTD INPUT- FOR RTD
7) THIRD PARTY COMMUNICATION- LIKE PLC INPUT OUTPUT,
CONTROLLER INPUT OUTPUT (IT IS DIFFERENET FOR DIFFERENT DCS)

Answer / khurshidmallick0786@gmail.com

Khurshidmallick0786@gmail.com

Answer / farhan

Dcs  under  stand  just 1 to  5  volts  therefore 1---5volts enters in  it.there  is  a  currernt  to  volt  converter available  in  dcs.

Transmitter reading is zero but in DCS showing one Bar what is the reason ?

3 Answers  

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what is all types of analyzer in water production plant?

1 Answers   Marafiq,

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The company where I am working, their is rosemount 5400 series radar type level transmitter, it is meant to show level of filled tank, but along with the level it is showing temperature also, so my question is how a onon-contact type radar type level transmitter can show temperature even if it does not have any contact with the fluid?

0 Answers   Process Control Technologies,

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What is the difference bitween control net scaner and device net scaner

0 Answers   Binani,

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what is the calibration standard for pressure and differential pressure transmitters?

1 Answers   Thermax,

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Which type of pressure can be measured by these elements?

0 Answers  

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Galvanizing.

0 Answers   CCIE,

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what do you mean by smart instruments ? define ? give an example?

2 Answers   Flour Tech Engineers (P) Ltd,

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what is RTV function in in process control?

0 Answers   Colgate,

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why we are using magnet for calibration of gas detector?

0 Answers   NSH,

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What is difference between loop and zone ?

5 Answers   Adgas, Bilt,

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I am having a Phoenix digital to modbus converter. The o/p of the same is connected to flow computer FB407. But the digital signals are updated only after one minute in the flow computer. what may be the cause of delay in communication? Flow computer is having a scanning period of less than 1 sec.

0 Answers  

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