what will be the principle & application of dissoled oxygen analyzer at wast water treatment plant at oxidation basin & how it work?

1 Answers  

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

0 Answers  

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why full bore ball valve is not used in steam applications?

1 Answers  

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what do u mean by compensation n pid tunning?in pid tunning what you tunned?is it possible 2 tune p i d

2 Answers  

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1)why we are using mostly Ultrasonic Flow meters to measure flow, rather than Radar waves? 2)why we are using Ultrasonic waves and Radar waves to measure the Level?

1 Answers   NTPC,

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We have a Yokogawa Micro-XL DCS, which is having around 300 I/O, but whenever there is any wire gets grounded in field, the 24v supply to all loops gets dipped & all the indications at DCS goes to IOP(shows input open), at present we have fixed 500mA fuses in all the lines but which does not working. Does it required to replace with lower amps fuse, then how much or is there any other solution for this.

2 Answers  

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how to calibrate a control valve?

7 Answers   Reliance, Telecon Systems,

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list of flame proof certification ?

1 Answers   TATA,

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Explain the working of an electronic level troll.

0 Answers  

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What is the relationship between Sensor

6 Answers  

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Explain the key components of control loop?

0 Answers  

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what is use of communication wire in multipare cable(oil and gas field), why this communication wire not used in single pair cable?

0 Answers  

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