External influences (rolling velocity, signal damping and lubrication) give the adjustment value
= dBa
The adjusted initial value = dBi + dBa = dBia
The shock value = dBsv
Normalized shock pulse value dBn = dBsv - dBi - dBa = dBsv - dBia
Speed
Asset speed is set as follows:
l
Manual entry — select machine in Configuration then edit the speed.
This option is used when an RPM sensor is not available and there is need to measure an
asset that requires the RPM. Examples include roller bearing condition and order-based
spectra.
l
Machine speed finder — the asset RPM is calculated from the vibration signal at the meas-
ure point. During configuration, the possible asset RPM is entered at machine train level.
The speed finder makes an analysis of the vibration signal with regard to RPM. The RPM
values can deviate by up to 15% of the possible value. The measure point for the speed
finder is the reference point for all other measure locations. The RPM at the other meas-
ure points in a machine train are calculated based on the machine train kinematic model.
Start to measure, then select RPM. Three values calculated from the vibration signal are
shown.
64 Version:1.0
On-board help
To Next Page
Loading...
