Answer / pramod

slpc is single line process controller
mlpc is multi line process controller

Answer / amit

Single loop programmable controller
Multi loop programmable controller

what is diffrance between FF & SMART, explain with difination

0 Answers   Bapco Bahrain Petroleum Company,

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My question may be very basic or childish but this question still persists in me, someone plz help me 1.why do we go for differential equations to analyze a system? 2.why do we solve it using matrices, is there any specific reason for using matrices other than the stories like it is simple,faster etc.

2 Answers  

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We have ZR22G-100-S-A-E-T-T--E-A/CV/F1 Model Zirconia Oxygen analyser which is Yokogawa make. I kept the analyser in Flue gas path at Air pre heater area. My plant is 7.5MW Biomass power plant. For a particular fuel, Coconut Husk which contains Sodium and Potassium chlorides iam not getting proper reading, Analyser output always Zero. I calibrated the analyser and it is OK. For Other fuels like Wood chips, Cholam waste, DOB, Groundnutshells, Ply wood waste and all iam getting actual percentage of Oxygen. What is the main reason behind this draw back?

2 Answers  

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A PLC is programmed to drive three motors A, B and C as follows : After running motor A for an hour, motor B should get ON and motor A should get OFF. And after running motor B for an hour, motor C should get ON and motor B should get OFF. And after running motor C for an hour, motor A should get ON and motor C should get OFF. (That is, a cyclic repetition with time period one hour) Now, the second condition is: If any motor gone faulty and is tripped, the consecutive motor should get ON and the faulty (tripped) motor should be eliminated from cyclic repetition. The remaining two motors should bear the cyclic repetition of one hour each. (For healthy motor take logic as high and for tripped motor take logic as low) Now, the third condition is: When motor A load(Amps) exceeds 60% of its rated load, motor B should get ON in parallel to motor A. And when both motors A & B are running in parallel, and if their load exceeds 60% of their rated load, motor C should also start in parallel to A & B. [Here the cyclic repetition is eliminated, until their loads become normal(40%)] [Take logic high(1) for load at 60% and logic low(0) for load at 40%] Now draw a flow chart or a ladder diagram to fulfill the above condition.

0 Answers   MNC,

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what is the input of digital counter during the the calibration time?

0 Answers  

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How u will setup SPI(2007) on Citrix Server (Thin Client Mode)? Plz Justify?

0 Answers  

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Instrument QA/Qc what is the project quality plan?conduit inspection RFI. which documents attache with package?

0 Answers  

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In which principles tx ,pressure gauge,Temp gauge,control valve works?

0 Answers   Bajaj, Professional Instruments,

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Absolute pressure is 700psi,what will be the gauge pressure?

1 Answers   IFFCO,

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i want to Measure the Difference pressure of Packed distillation Column of height 3 mtr. h.p. side connected to bottom & L.P. side connected to the top , so tell me what will be THE URV & LRV of that D.P. transmitter?

5 Answers  

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in a power plant which system are compensated?

2 Answers  

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what is the standard of determining opening/closing time of Motor Operated Valve?

1 Answers  

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