Operating Overview
You can use the instrument to perform the following tasks:
- Take live, free run measurements for onsite analysis of vibration spectra and waveforms
- Record routes and store vibration data for transfer to a PC (off-site analysis)
- Use keypad entry to enter additional machine information and process inputs
- Balance machines using single and dual plane methods (vb7 and vb8 instrument models only)
On-site Analysis
Using your vbSeries instrument you may measure vibration spectra and waveforms, and analyze them onsite immediately. This feature is suitable for one-off investigations outside your regularly scheduled
monitoring route.
- Set measurement parameters on the instrument.
- Measure and analyze the spectrum or waveform.
- Record the data to memory (optional).
- Transfer the data to a PC for further analysis (optional).
Recording Routes
Take vibration recordings for all monitored machines then transfer them to a PC for analysis.
The instrument guides you through a pre-defined data recording sequence known as a 'route'. Routes are created on a PC then transferred to the instrument (see the Ascent Software Reference Guide for instructions). Recording routes is particularly useful if you routinely monitor a large number of machines, and allows you to build up a history of machine states and conditions over time.
- Create a recording route on a PC then transfer it to the instrument.
- Collect data for each item on the recording route as prompted by the instrument.
- Transfer the collected data to a PC for later analysis.
Keypad Entry
Create keypad entries to define process input values such as current or flow rates. These process input values are entered manually using the keypad, rather than by attaching a sensor to a machine. The
collected information can be transferred to a PC along with your normal measurements.
If you include keypad entries in a route the instrument will prompt you to enter values at specific points along the route. Keypad entries can also be used as on-screen reminders to perform machine checks such as checking temperature and pressure etc.
- Create keypad entries as part of a recording route then transfer these to the instrument.
- Enter the values for each keypad entry item when prompted by the instrument.
- Transfer the collected values and recordings to a PC for analysis.
Balancing
Analyze and correct rotating mass imbalance problems 'in-situ'. A rigid rotor can be balanced in one or two planes.
Note: Balancing functions are available on the vb7 and vb8 instrument models only.
- Take an initial measurement of the imbalance.
- Attach a trial weight to the balancing plane and take another measurement. For dual plane balancing, do the same for the second plane.
- Attach correction weights to the balancing planes as recommended by the instrument.
- Take a measurement in each plane to confirm that the rotor is balanced. Any residual imbalance can be removed via trim balancing.
Last Reviewed: 11/Jun/2009 Source: vbSeries Reference Guide Revision 15 April 2008 - pages 15 - 18