Interested to Buy Any Domain ? << Click Here >> for more details...
Why only negative 24 vdc supply give in vibration measuring
system.
- 6 Answers
- 17612 Views
- I also Faced
- E-Mail Answers
Answer Posted / nandan
The principle is that analyzer supplies a negative voltage
to transducer,who converts it into a frequency & sends it
across the probe.Now as the probe comes into the area of
rotor it creates a magnetic field & with it eddy current is
produced on the rotor side.Which changes the amplitude of
the frequency.It induces the voltage & remaining frequency
comes to the transducer through the return way.Transducer
converts it into the voltage .
Now coming back to the question The gap voltage has a
negative relation with the voltage induced i.e. as the gap
increases the induced voltage decreases.So to make it to
into a linear relation ship, negative voltage is supplied.
i.e
Gap Gap voltage
0 mm 0 vtg
1 mm -9 voltage
2 mm 18 voltage
& when the probe is in air it will have no induced voltage
so all -24 voltage without induced voltage will return back.
| Is This Answer Correct ? | 16 Yes | 7 No |
Post New Answer View All Answers
what does the ratio 800-400-300-200/1-1-1-1-1 in the specification of current transformer indicates?
what is the vital subject for scoring bhel exam&what is the question pattern
How would you choose differential range?
Instrument QA/Qc what is the project quality plan?conduit inspection RFI. which documents attache with package?
What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).
what is cold loop? difference between hot and cold loop?
need instrumentation job completed 1 year trainee ship in mnc pesticide company. now in search of job
plz tell me clearly about PID.."when v have to change I value,D value,GAIN??
our kks tagging is crossing more than 12 character please suggest how to take tags in the DCS
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??
Describe how to use megger to measure the earth resistance and insulation resistance
What are different types of control valves?
Can Any body tell me about the Contact or Email id of any good Consultancy which help me to find a job in Instrumentation Field in India .I have Six years of Work Experience in the Same field.Please revert me back on shammi_gwalior@yahoo.com ?
hello sir/madam, I,Subramanian need 5yrs placement papers of officer trainee of Instrumentation technology.pls send to this mail id mani_nxtgen@yahoo.co.in please do the needful. with regards, subramanian.v
DEAR SIR/MADAM MY NAME IS ARKAPROVA BHATTACHARYYA.I AM A FRESHER INSTRUMENTATION ENGINEER.CAN YOU PLEASE SEND SOME QUESTION PAPERS OF GRADUATE ENGINEER TRAINEE EXAM OF DVC(DAMODAR VALLY CORPORATION).MY EMAIL IDs ARE arka_aec@rediffmail.com.
