Answer / vicoy

Wet Contact has line supply voltage either AC or DC
Dry Contact is open and closed continuity

Answer / saravanakumar

wet contact is a contact which is not potential free. But dry contact is a potential free contact and the contact rating can be either 24VDC, 230VAC or 110VAC.

What are the key features of a Distributed Control System? describing the various layers (sensor through to business system interfaces) as well as the hardware, software and security aspects of the DCS.

0 Answers  

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If an Instrument has 550 ohm internal resistance and the cable used for that instrument is 0.5 ohm per meter resistance. If the voltage is 12volt.How much length cable can be used? Please tell me its Calculation formula.

5 Answers   MOL,

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If I want to buy a pressure switch & 3-way valve for hot water application then witch parameter I should consider.

1 Answers  

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1 bar is equal to how many pound per square inch(psi)?

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use of split range ? where it is used ? in which control loop it is used ?

0 Answers  

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all types instrumentation questions want

0 Answers   Bhel, Descon, HBL Power Systems,

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we are having yokogawa centum cs3000 dcs in our power plant. i need some of the operator guides NOT to appear in HIS0163 AND HIS 0162 but it shoul appear in HIS0164 HOW TO DO IT?

0 Answers   Yokogawa,

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In my company plc based winders are operated. one day there was a data transmission failure alarm shown on pc. as per sir instruction we have reset master plc but winders were not triped and alarm gone. so what master plc do?

0 Answers  

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Why plc require in analog input 4-20amp & 0-10 volt?

0 Answers  

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What is DCS?

4 Answers   GAIL, Sabic, Trident, Yokogawa,

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what is mean by TDC-3000

5 Answers   ADCO,

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WHAT IS D/O D/I AND A/O A/I PLZ EXPLAIN

2 Answers  

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