what is plc? breif explain

3 Answers   APL,

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What is two wire system and how it work

2 Answers   Bhel, IFFCO,

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why the SCAN time of DCS is more & that of PLC is less? if the SCAN time of DCS then why we use DCS.

4 Answers  

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What is basic of instrumentation

8 Answers  

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if a dp transmitter has range 100 in H2O and flow is 20mmcf and if the flow is changed to 25 mmcf then what is the formula to determine new range of transmitter

1 Answers   TATA,

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typical loop drawing of a simple feedback control comprising of one transmitter and one control

0 Answers  

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What is the minimum rating availalbe for weld neck orifice in market?

0 Answers   Jindal,

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Is it possible to convert 4 wire transmitter to convert to 2 wire with additional relay.Please send detial with drawing,i will appreciate.

2 Answers  

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What is pipe schedule? What are all effects its having in the valve? how do we take care of pipe sch in case if the customer dint specify in the data sheet. What we need assume and in what basis?

3 Answers  

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how ranges is decided for drum level or dearator level,in my pplant i have seen for boiler drum range is -1000 to 1000mmwc, while for dearator -2000 to 0 mmwc ,why they decided to take this range ?

2 Answers  

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what is see back effect?

9 Answers  

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the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

0 Answers  

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