5. The Technical Means of Diagnostics and Balancing.
Question 5.1. We have heard that there
are many types of instruments and systems for industrial equipment monitoring
and diagnostics by vibration and noise. Who produces and sells such systems in
Russia?
(The question was asked on the International Exhibition «ENERGETIKA &
ELECTROTECHNIKA 98»)
The question is answered by A.V. Barkov. 2 Feb. 1999.
Question 5.2. In many analyzing instruments low register
analog-digit converters are used, for example with eight digits. And it is
specified that the instrument can separate in spectral analysis two harmonic
components the amplitude of which differ from one another in 1000 times. Is it
really possible? The value of one digit in this case is 0.25%, but not 0.1%.
(The question was asked by the students of the system-engineering specialty.)
The question is answered by A.V. Barkov. 2 Feb. 1999.
Question 5.3. For vibration signal analysis we use the
instruments with FFT for 400, 800, 1600, 3200, 6400 and more spectral lines.
Your instruments have no more than 1600 lines. The question is why?
(The question was asked by a representative of the company LeadFar Technologies,
Inc. from China.)
The question is answered by Natalia A. Barkova. 1 Mar. 1999.)
Question 5.4. The data collector DC-11 can measure the
overall level of vibration but to do it the operator must set the lower and the
upper frequency levels, viz. he must select the frequency band pass filter where
the signal level will be measured. Why does the instrument have such a
possibility and how to use it?
(The question was asked by the mechanic, responsible for machine diagnostics,
Sergej Reshetkin from the joint-stock company "SeverStal")
The question is answered by Alexej V. Barkov. 1 Mar. 1999.
Question 5.5. What type of adapter is it necessary to
set for DC-11 in different cases when you set the "Adapter Type" in the dialog
window? What adapter is it necessary to set when the vibration sensor or the
tacho probe are used?
(The question was asked by the mechanic, responsible for machine diagnostics,
Sergej Reshetkin from the joint-stock company "SeverStal")
The question is answered by Vladimir V. Malakhov. 4 Mar. 1999.
Question 5.6. To solve what problems do you use the
signal processors in the digital noise and vibration signal analyzers?
(The question was asked by a listener of the school - seminar in
vibrodiagnostics.)
The question is answered by Oleg Arkhangelsky. 26 Mar. 1999.
Question 5.7. I have found that VAST produces the
instruments and designs its own software to work with them. I would like to know:
What are the specification data and who manufactures the ADC circuit boards to
solve the vibrodiagnostic problems. For what platform do you design your
software and what specification for your hardware driver do you use?
(The question was asked by a specialist from the Murmansk State Technical
University. )
The question is answered by Oleg Arkhangelsky. 16 June 1999.
