what should be the distance of vibration sensor & to the point where vibra

what should be the distance of vibration sensor & to the
point where vibration to be measured Ex turbine axial
displacement

Question Posted / prakash h kusuma

3 Answers
7873 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what should be the distance of vibration sensor & to the point where vibration to be measured ..

Answer / prakash

The philosophy is different for Axial and Radial
measurment. For radial measurement the AC component voltage
is directly proportional to the magniture of vibration so
the gap is fixed based on the probe linearity (usually
10vdc for bently nevada probes).
For axial measurement the AC component voltage is not
important and only the DC component is considered which
varies proportional to the distance between the probe and
the shaft. Conversely, the shaft is centered and the probe
voltage is adjujsted to 10Vdc and the same voltage is also
referenced in the system for shaft zero position. While the
unit/turbine is running the position of the shaft is
proportional to the dc component measured.

Is This Answer Correct ?

4 Yes

0 No

what should be the distance of vibration sensor & to the point where vibration to be measured ..

Answer / sohail

50 mils

Is This Answer Correct ?

0 Yes

0 No

what should be the distance of vibration sensor & to the point where vibration to be measured ..

Answer / deepak kumar behera

The distance of vibretion sensor and the piont where the
vibretion is to be measured is should be 1.5 mm.

Is This Answer Correct ?

2 Yes

9 No

Post New Answer

More Instrumentation Interview Questions

Determine the manipulated variable, controlled variable, and the measured variable given a description of various typical industrial processes.

6 Answers Honeywell,

why do we use 4-20 ma current why cant o-20ma

6 Answers Southwest Cheese,

What is the relationship between the universal gravitational constant (G) and the acceleration due to gravity (g)?

3 Answers APPSC,

installation process of orifice,a question asked for confusion creation in interview by BARC 1.if orifice is tightly fitted with pipe ,it will act like venturi 2.if orifice is left hanging in between liquid it will not create the pressure difference exactly,

0 Answers BARC,

any questions on motor and energy conversions machines?

0 Answers ABB,

how manys ways dp transmitter can be calibrated having range of -150 to 400mmwc,what side pressure u will apply?

3 Answers

Where Can i take a SPI INtools training in Mumbai? In Rolta India Ltd to whom I should approach regarding of SPI INtools Training?

0 Answers

if I did short to both AO connections, channel will burn or what? m sure in AI it will damage to channel. But what will happens in AO?

1 Answers

what is the importance of CV in the control valves? how it is calculated?

0 Answers

What is the advantage of using locally fabricated hook ups over Pre fabricated hook ups in process instrumentation?

0 Answers Engineers India Limited,

HOW TO CALCULATE WAKE FREQUENCY FOR THERMOWELL???WITH OUT SOFTWARE..

1 Answers

how can we calibrate RADAR LEVEL transmitter 0% to 100%

3 Answers Chevron Phillips, Honeywell,

For more Instrumentation Interview Questions Click Here