explain Cascade Control strategy with the help of a block diagram. also exlain its working in a distillation column

2 Answers   ABB, Sabic,

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Which standard of hazardous area classification used in India?

1 Answers   Orchid,

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What is zero elevation and zero suppression?

0 Answers   CCIE,

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Why not come out analog output in ABB EL3020 when display show correct value

0 Answers  

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a pressure transmitter with a range of 0 to 2500kpag has a specified accuracy of 0.5 % of span.It is to be calibrated using a comparison gauge to have an accuracy of 0.1% of span.The comparison gauge has a range of 0 to 3000kpag What is the accuracy ratio? is this ratio acceptable?

2 Answers  

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what is all types of analyzer in water production plant?

1 Answers   Marafiq,

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What is the difference between mmwc and mmwg?

0 Answers  

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Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

0 Answers   Ace Info,

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Explain about the leakage class of the control valves

0 Answers   CCIE,

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How to work temperature gauge?

0 Answers   KJS,

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what are the problem's will accure in dcs or plc hadware and what are the solution for it?

2 Answers  

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what is seebeck effect?

7 Answers  

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