BRUEL & KJAER VIBROCONTROL 8000 - 24.9.2 REBAM channel; 24.9.3 REB Acceleration; 24.9.4 REB Acceleration (Slow)

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Brüel & Kjaer Vibro │ Instruction
VC-8000 MPS
Content
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24.9.2 REBAM channel
Typical uses: Rolling Element Bearings using a specifically designed proximity probe. This channel
type is rarely used.
Measurement Description Default or Add
Direct
Overall dynamic amplitude measurement.
6 dB/octave (1 pole) roll-on, -6 dB/octave (1 pole) roll-off
Default
Gap
DC sensor Gap voltage for diagnostics.
Default
Rotor Region
Band-pass filtered measurement typically used for rotor
related information.
6 dB/octave (1 pole) filter roll-on, -36 dB/octave (6 pole) roll-
off
Default
Prime Spike
Band-pass filtered measurement typically used for bearing
related information.
36 dB/octave (6 pole) filter roll-on, -6 dB/octave (1 pole) roll-
off
Default
Waveforms
Standard, asynchronous and synchronous
Default
24.9.3 REB Acceleration
Good to use when there is no phase trigger available.
Measurement Description Default or Add
Overall
Overall dynamic amplitude measurement.
24 dB/octave (4 pole) roll-on, -24 dB/octave (4 pole) roll-off.
Default
Prime Spike
Band-pass filtered measurement typically used for bearing
related information. 24 dB/octave (4 pole) filter roll-on, -12
dB/octave (2 pole) roll-off
Default
HF
Demodulated
Filtered and peak-stretch demodulated measurement
typically used for early warning of lubrication and bearing
faults.
Default
Bias
DC sensor bias voltage for diagnostics.
Default
Waveforms
Asynchronous and Peak-Stretch (enveloping)
Default
24.9.4 REB Acceleration (Slow)
Typical uses: Rolling Element Bearings using an accelerometer on low speed or noisy machines.
RMS and peak detector response times are slower than standard REB Acceleration channel type.
Measurement Description Default or Add
Overall
Overall dynamic amplitude measurement.
24 dB/octave (4 pole) roll-on, -24 dB/octave (4 pole) roll-off.
Default
Prime Spike
Band-pass filtered measurement typically used for bearing
related information.
24 dB/octave (4 pole) filter roll-on, -12 dB/octave (2 pole)
roll-off
Default
HF
Demodulated
Filtered and peak-stretch demodulated measurement
typically used for early warning of lubrication and bearing
faults.
Default
Bias
DC sensor bias voltage for diagnostics.
Default
Waveforms
Asynchronous and Peak-Stretch (enveloping)
Default