What is exact difference between the panel earthing and system earthing in DCS system. What is the value of resistence.

0 Answers  

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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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What is the formula to convert mv to temperature in k type thermocouple?pls simply elaborate? I got one ans.it is Temp=mv×25°+atmospheric temp,but here what is 25°,i confusef ,so pls????

2 Answers   HPCL,

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I am working in a process industry, in that there are several sections devided in the SCADA screens and individual sections may START independently. But sometimes i am facing problem i.e, if section 2 Stopped by the operator immediately Section 1 or Section 3 or Section 4 is getting stopped can you expain the reason behind this?

5 Answers  

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what is power factor?

1 Answers  

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DC motor and DC Drives working funda?

1 Answers  

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What is Process portal A(PPA)?

1 Answers   ABB,

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WHERE I CAN GET THE TRAINING SMARTPLANT INTOOLS V7 IN INDIA

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What standards are used for earthing of field instruments?

1 Answers  

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Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.

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what is the difference between Feedback controller and Feed forward controller. and when it is to be used.

3 Answers  

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how to overhaul control valves.what are the proper procedures.

1 Answers   Jindal, QAFCO,

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