Answer / raj ups

I think the direct action control valve generally used in
pressure control loop as we r using it in the vapour release
vale as pressure incresese as greatter as the set point the
opening of the valve rises as quickly

Answer / umair naz mughal

direct action control valce is mostli use boiler section because if the water flow is reduce the temp is rise and boiler was damage so we use this valve this is normally open.

how to know the URL and LRL for steam drum level and why the calibration range is in negative ?

1 Answers   JSW, Samsung,

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what is novram ic number of foxboro 762cna microcontroller ?thank

1 Answers  

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If range of 3-15 psi, a multiplying relay with a 1:2 ratio would give what output pressure for 6 psi input?

1 Answers  

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1.can you use SCADA instead of DCS,DCS instead SCADA 2.Difference between DCS and PLC,can their role be reversed i.e. role interchange 3.Difference between RTU and PLC

0 Answers   IOCL, Lakshmi Machine Works,

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why we are using orfice plate? then difference between orfice 7 nozzle plate?

1 Answers   Flour Tech Engineers (P) Ltd,

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In apron feeder how TPH is calculated?

0 Answers   Lafarge,

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Control valve question what is the meaning of cauge.?what is the use of cauge?

1 Answers  

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Im working in a shopping center, it is also hotel and office building, two towers exactly and someone is proposing a PLC control for the HVAC system, but Im thinking of a DDC control system. in this case what is the difference between PLC and DDC control?

1 Answers  

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WHAT IS AN INTERLOCK SYSTEM ?? HOW THEY WORKs ?? WHERE IT IS USED ??? MAINLY ??

2 Answers   TATA, Tata Steel Limited,

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How to Calibrate Interface Level Troll in field

0 Answers  

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Which are all the commonly used Bordon tubes in the pressure gauges. Do any one use ASTM A 312 tubes for this purpose?

0 Answers  

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Boolean algebra

0 Answers   CCIE,

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