what r all the type of viberation measurement measuring in
turbin? what's the output of viberation sensor?
Answers were Sorted based on User's Feedback
Answer / banerjeenandan
The answer No 1 given by Mr.Amit is absolutely correct. You
may need some more details.
The vibration sensors used in turbine, generator etc are all
same type i.e proximity type of sensors. The sensor are
mounted at the proximity of the Turbine and generator rotor.
From the sensors one coaxial cable runs to the proximiter,
which is mounted in a seperate JB nearby. From TSI Monitors,
this Vibration probes gets +24 Volts DC. The proximeter
gives a signal 0 to -22.4 Volts DC depending upon the
vibration measured by the sensor. Generally the diatance
between the probe tip and the rotor is maintained such that
it gives -10 Volts DC when the turbine is not running.
The sensor works on eddy current principle. As the rotor
vibration increases, the eddy current generation remains
contant, but the absorption of power in terms of eddy
current increaes. This loss of power is sensed by the
proximeter and DC voltage signal is transmitter to TSI
monitor for Measurement, Controlling & Indication purpose.
Is This Answer Correct ? | 12 Yes | 1 No |
Answer / amit
proximeter type based on eddy current principal and its o/p
in milli volts.
Is This Answer Correct ? | 5 Yes | 4 No |
what is basic working principle of Governer in power plant?
whatis virtual instrumention?
in any transimitter (flow/level) there are three terminals for supply& test (+,-,+)in two wire,24VDC given to Tx.,but how 4-20 ma signal travels thru same wire (as it is for 24VDC input supply)?
What is an analog input - output , digital input - output . Any example ???? How they r known its ai-ao or di - do
What is minimum distance between three thermocouples (2oo3) mounted on same pipe line (20")? Technically accepted by stright line mounted or circler mounted?
If the Barrier Fails during online then What will be the control valve position in field or Positioner action in the field.
What is Cryogenic?
what is diffrence between analog card and digital card in plc.how analog card work,Please explain in detail.Please send it on abhi_vyas@sify.com
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??
Why we used cage in control valve?
What is cavitation. what is the effect of it on control valve and how is it prevented.
I need control valve ISA hand book. Is there any site to download that big book containing all the pages. Written by Paul Friedmann