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330851-000-070-10-00-05

3300 XL 25 mm Proximity Probe
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Product Describe:

Bently Nevada 330851-000-070-10-00-05 is a 3300 XL 25 mm proximity probe with the documented 3300 XL 25 mm probe family execution. It supplies the noncontact eddy-current sensing input used for differential-expansion measurement on mid-size to large steam-turbine generators.
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Technical specifications for 330851-000-070-10-00-05

  • Manufacturer:
    Bently Nevada
  • Product Category:
    Machinery Monitoring Systems
  • Spare Part Number:
    330851-000-070-10-00-05
  • Estimated shipping dimensions:
    23x23x4.5cm
  • Weight:
    0.54 kg
  • Tariff Code:
    8537101190
  • Counliy of origin:
    USA
  • Product family:
    3300 XL 25 mm Proximity Probe
  • Probe tip material:
    PEEK
  • Probe case material:
    AISI 304 stainless steel
  • Probe cable:
    75 ohm triaxial PFA-insulated FluidLoc cable
  • Continuous probe temperature:
    -35 to +200 deg C
  • Short-term probe temperature:
    +250 deg C maximum for less than 24 hours
  • Minimum cable bend radius:
    25.4 mm (1.0 in)
  • Probe-case to lead tensile strength:
    330 N (75 lb)
  • Matched-system linear range:
    12.7 mm (500 mils)
  • Matched-system scale factor:
    0.787 V/mm (20 mV/mil) nominal
  • Matched-system frequency response:
    0 to 2.7 kHz, +0/-3 dB typical

Information

Overview Manuals Common Applications Product Precautions
Bently Nevada 330851-000-070-10-00-05 provides the probe element for a matched 3300 XL 25 mm differential-expansion transducer loop.
  • Measures rotor-to-casing differential movement without mechanical contact
  • Uses sealed high-temperature construction for demanding turbine environments
  • Carries the eddy-current signal through a protected FluidLoc cable path
  • Supports controlled verification with the approved sliding-bracket arrangement

The probe observes a turbine rotor collar or ramp and connects through its extension cable to the matched Proximitor Sensor. Commissioning confirms mechanical alignment, total system length, static gap and controlled movement response before the protection channel returns to service.

Important Notice: Confirm Bently Nevada 330851-000-070-10-00-05, case execution, bracket and probe adapter, collar or ramp target, probe alignment, lead and armor routing, ClickLoc connector, extension cable, 3300 XL 25 mm Proximitor Sensor, target material, static gap, wiring, shielding, grounding, monitor configuration and controlled differential-expansion test results before commissioning.

Apter Power Bently Nevada 330851-000-070-10-00-05 Manuals and Guides

The first document is the model-specific technical and system reference. The second is a distinct installation, connection and commissioning workbook with field checks and acceptance records.

Steam-turbine differential expansion
Tracks the difference between rotor growth and casing growth on mid-size to large turbine generators.
Redundant collar observation
Supports two probes observing the same collar face for redundant differential-expansion measurement.
Complementary-input measurement
Supports probes on opposite collar faces to extend the measurable differential-expansion range.
Ramp-based compensated measurement
Supports an engineered ramp arrangement with a second probe used to compensate for radial movement.
Read the applicable Bently Nevada installation instructions before work. Verify 330851-000-070-10-00-05, the installed host system and all configured field interfaces before isolation, wiring or commissioning.
1
Confirm the full Bently Nevada 330851-000-070-10-00-05 marking and the complete installed probe marking and case execution before removal.
2
Place the steam-turbine generator and differential-expansion channel in the approved maintenance state.
3
Protect the PEEK probe tip, case interface, FluidLoc lead and ClickLoc connector from impact and contamination.
4
Record the collar or ramp geometry, probe alignment, bracket position, lead route and current static reading.
5
Route and support the lead without sharp bends, crushing, abrasion or tensile loading.
6
Match the probe, extension cable and 3300 XL 25 mm Proximitor Sensor to the engineered total system length.
7
Set the static gap within the documented linear region and confirm polarity and scale factor.
8
Simulate controlled collar movement and verify differential-expansion response, diagnostics and alarm action.

Technical notes

Install 330851-000-070-10-00-05 in the documented collar or ramp arrangement and preserve probe alignment, case execution, lead route and connector protection. Match the extension cable and 3300 XL 25 mm Proximitor Sensor to the approved system length, then verify gap, polarity, scale factor and controlled differential-expansion response.

FAQ View All FAQ

  • Which 3300 XL 25 mm system components must be matched to Bently Nevada 330851-000-070-10-00-05?
    Match the complete 330851-000-070-10-00-05 marking to the 3300 XL 25 mm probe, extension cable and Proximitor Sensor records before work.
  • How should the installed location for Bently Nevada 330851-000-070-10-00-05 be documented before removal?
    Record the mounting position, documented installed case, target geometry, lead route, connector position, shielding and current static reading.
  • What target geometry supports differential-expansion use of Bently Nevada 330851-000-070-10-00-05?
    Use the documented collar or ramp arrangement and maintain probe alignment perpendicular to the observed target.
  • Which temperature limits govern Bently Nevada 330851-000-070-10-00-05 at the probe location?
    The probe is rated -35 to +200 deg C continuously and up to +250 deg C for less than 24 hours.
  • How are the FluidLoc lead and ClickLoc connector of Bently Nevada 330851-000-070-10-00-05 protected?
    Protect the FluidLoc cable, high-temperature ClickLoc connector and documented cable construction from contamination, sharp bends and tensile loading.
  • What field checks establish the static position for Bently Nevada 330851-000-070-10-00-05?
    Move the approved sliding bracket through a controlled distance, confirm gap voltage and verify response across the required linear region.
  • Why must a legacy 7200 system be replaced as a complete loop when fitting Bently Nevada 330851-000-070-10-00-05?
    Match the documented probe lead probe execution to the approved extension cable and 3300 XL 25 mm Proximitor Sensor system length; retain the exact documented article execution identity.
  • What test evidence releases Bently Nevada 330851-000-070-10-00-05 to turbine service?
    Retain the full article check, as-left gap, static position, controlled movement response, channel diagnostics and alarm verification record.
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