BRUEL & KJAER VIBROCONTROL 8000 - 24.10.2 Tachometer (Rotation and Speed); 24.10.3 Zero Speed; 24.11 Steam Turbine Monitoring; 24.11.1 Case Expansion

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Brüel & Kjaer Vibro │ Instruction
VC-8000 MPS
Content
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24.10.2 Tachometer (Rotation and Speed)
Typical uses: Machine speed only (not a phase reference).
Measurement Description Default or Add
Speed
The machine rotational speed.
Default
Gap
For proximity probes, the Gap is the average distance
between the probe face and shaft as measured in volts. For
passive magnetic transducers the Gap voltage is near zero.
Default
24.10.3 Zero Speed
Typical uses: Turbine turning gear engagement
Measurement Description Default or Add
Zero Speed
Speed indicator to ensure safe engagement of the turning
gear.
This measurement is only active below 100 rpm and
requires two channels. Both channels must be valid and
agree for the measurement to be valid.
Default
Speed
The machine rotational speed.
Default
Gap
For proximity probes, the Gap is the average distance
between the probe face and shaft as measured in volts. For
passive magnetic transducers the Gap voltage is near zero.
Default
Peak Speed
The maximum speed measured since the last held value
reset.
Add (if needed)
24.11 Steam Turbine Monitoring
24.11.1 Case Expansion
Typical uses: Steam Turbine case expansion measurements using an LVDT transmitter.
Measurement Description Default or Add
Direct
Single channel case expansion measurement from the
LVDT displacement.
Default
24.11.2 Case Expansion (2 ch)
Typical uses: Steam Turbine case expansion measurements using two LVDT transmitters
Measurement Description Default or Add
Differential
Case
Expansion
Calculates the difference between two case expansion
transducers.
Default
Direct 1
Single channel measurement from LVDT 1.
Default
Direct 2
Single channel measurement from LVDT 2.
Default