Answer / din

hi
for conductivity and ph meter ,calibration will occur with the help buffer solution .

and for mass flow meter ,it is difficult to calibrate ,it is a factory calibrated instrument.
thanks

Why mixer nd grinder Is example of constant torque load not variable torque load ???

0 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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Why we used cage in control valve?

8 Answers  

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What is difference b/w absolute & gauge pressure? EXPLAIN

2 Answers   IFFCO,

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what is the difference between profibus and controlnet networking.

0 Answers   HZL,

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What kind of feedback is used in DP cells.

1 Answers   CCIE,

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If the vibration probe near to the shaft,then output voltage will be decreased r increased?How?

1 Answers   Amtek, Hamsco, IJT,

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what is plc?

27 Answers   HPCL, KRL, Noor Company, Petrochemicals, SS Automation,

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Ple give me "INDUSTRIAL INSTRUMENTATION AND CONTROL S.k. Singh 3th edition" Solution manual to self-Check Quiz and chapter-wise PowerPoint Slides. Home web-site not available... Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Ple Thanks for all...

0 Answers  

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If the on Of the DO module is off in the System cabinet, then what is the Procedure to check weather the Module is working or not.

2 Answers   Honeywell,

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While giving Power Supply of 24 VDC to a Transmitter,why Shield Terminal is connected either at Transmitter or at ISB.Why not Shield Terminal connected at both ends.If the Reason is to avoid Noise interference,which type of noice that is interfering.Is the Noice from the 24 VDC supply terminals or from any external source.

1 Answers  

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please can anyone tell me in detail, what's mean by open loop and close loop?

6 Answers  

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