Answer / satish awate

PLC is programmable logic control in this field instrument are connected to input or output of PLC input & output. And PLC are connected to DCS system or SCADA or HMI by a RS232 or RS434 communication cable.

Answer / rajendra singh

first of all I want to tell you connection from field to DCS:

Example: C.V. to Tx. to controller via Ethernet cable to DCS.

Answer / nnnnnnnnnnnnnn

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in the boiler in the main steam line and its bypass line and the startup vent vales are only motorised valves why cant we use other types of valves such as pneumatic.

3 Answers  

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why we are using digital signals for I/O & how to measure this signals is getting or not ?

0 Answers  

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why we use condesiate parts before tranmitters?

3 Answers  

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what is stability

2 Answers   IOCL,

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So I'm a first year apprentice and I'm having a tough time with knowing the difference between AI, AO, DI, DO. I'm having a hard time understanding what devices are which and why. Can someone explain this to me?

2 Answers  

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what is the full form of psig.

8 Answers  

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what is piezo electric transducer?its principle?

2 Answers  

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Why does a pressure gauge installed on reactor, doesn't have any vent line below to release the pressure? Is it any kind of designing mistake or it actually does not require any vent line? And if it does not require any vent line below it then how we are gonna release the pressure built inside the pressure gauge?

0 Answers   Process Control Technologies,

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which type of rtd is good for any system,2wire,3wire or 4 wire

9 Answers  

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loop chech tools list

1 Answers   BAP,

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what is difference between RTD and Thermocouple?

2 Answers  

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Which standard of hazardous area classification used in India?

1 Answers   Orchid,

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