BRUEL & KJAER VIBROCONTROL 8000 - 24.7.2 Radial Vibration with Smax; 24.8 Reciprocating Machines; 24.8.1 Recip Crankcase Velocity; 24.8.2 Recip Cylinder Pressure

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Brüel & Kjaer Vibro │ Instruction
VC-8000 MPS
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24.7.2 Radial Vibration with Smax
Typical uses: Applications where the Smax measurement is used (ISO 7919-5, VDI 2059).
Measurement Description
Default or
Add
Smax
Maximum Orbit displacement calculated using an XY probe pair.
Default
Gap
DC sensor Gap voltage for diagnostics.
Default
1X amplitude
and phase
A synchronous amplitude and phase measurement at running speed.
Default
Requires PT
2X amplitude
and phase
A synchronous amplitude and phase measurement at twice running
speed.
Default
Requires PT
24.8 Reciprocating Machines
24.8.1 Recip Crankcase Velocity
Typical uses: Reciprocating Compressors
Measurement
Description
Default or Add
Direct
Similar to the standard Velocity channel except that Fault
events are valid for alarming. This allows the channel to
alarm in the event that a liquid slug causes an excessive
amplitude spike.
Default
1X amplitude
and phase
A synchronous amplitude and phase measurement at
running speed.
Default
Requires PT
2X amplitude
and phase
A synchronous amplitude and phase measurement at twice
running speed.
Default
Requires PT
Bias
DC sensor bias voltage for diagnostics.
Default
24.8.2 Recip Cylinder Pressure
Typical uses: Measurement of rod loads, pressure/volume curves for reciprocating compressors.
Measurement Description Default or Add
Compression
Ratio
Ratio of suction and discharge pressures.
Default
Discharge
Pressure
Pressure measured at the discharge.
Default
Maximum
Pressure
Highest pressure measured over a cycle.
Default
Minimum
Pressure
Lowest pressure measured over a cycle.
Default
Peak Rod
Compression
Maximum compressive rod load measured over a cycle.
Default
Peak Rod
Tension
Maximum tensile rod load measured over a cycle.
Default
Rod Reversal
Degrees
Number of degrees of the cycle when the rod load was
reversed.
Default
Suction
Pressure
Pressure measured at the inlet.
Default