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330851-02-000-060-50-00-05

3300 XL 25 mm Proximity Probe

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Technical specifications for 330851-02-000-060-50-00-05

  • Product Model
    330851-02-000-060-50-00-05
  • Product Parameters
    3300 XL 25 mm Proximity Probe
  • Tariff Code
    8537101190
  • Country of origin
    USA
  • Place of shipment
    Xiamen, China
  • Estimated Shipping Size
    20.5x22.5x3.5cm
  • Manufacturer
    Bently Nevada
  • Weight
    0.2 kg
  • Probe Case Type Option
    M30x2 Thread
  • Unthreaded Length Option
    0 mm
  • Overall Case Length Option
    60 mm
  • Total Length Option
    5.0 metres (16.4 feet)
  • Armor Option
    No Armor
  • Agency Approval Option
    Multiple Approvals

Description

02 M30x2 Thread
MinimumUnthreadedLength0 mm
MinimumUnthreadedLength 60 mm
50 5.0 metres (16.4 feet)
00 No Armor
05 Multiple Approvals

Information

Overview Manuals Technical notes Product Applications Mechanical Mounting & Brackets

Features:

  • 12.7 mm (500 mils) Extended Linear Range
  • Dual-Seal Design with FluidLoc™ Cable Technology
  • PEEK Probe Tip with AISI 304 Stainless Steel Case
  • Extreme Temperature Survivability up to 250°C
The 3300 XL 25 mm Transducer System consists of a separate25 mm probe, an extension cable, and a 3300 XL 25 mmProximitor Sensor.  The 0.787 V/mm (20 mV/mil) output givesthis system a linear range of 12.7 mm (500 mils).  Based on thislinear range, the 3300 XL 25 mm Transducer System is suitablefor measuring differential expansion (DE) on mid-size to largesteam turbine generators caused by the difference in growthrates between the turbine rotor and the machine stator(casing). 

Two transducers with at least one transducer viewing a rampon a rotor and the second transducer viewing either a separateramp or a different location on the rotor to compensate forradial movement.  This arrangement adds some error to themeasurement, but can measure a longer total DE distance thanthe complementary measurement.The criteria for selecting a mounting method are the size ofthe available target, the expected amount of rotor axialmovement and the type of DE target that exists in the machine(collar versus ramp).  If sufficient collar height is available, twotransducers observing the same side of a collar is thepreferred configuration.  These two transducers provideredundant measurements.

The 330851-02-000-060-50-00-05 Bently Nevada 3300 XL 25 mm Proximity Probe may still be available for purchase and support from Amikon Limited beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330851-02-000-060-50-00-05 3300 XL 25 mm Proximity Probe Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The 3300 XL 25 mm Transducer System consists of three components: the 25 mm probe, an extension cable, and a 3300 XL 25 mm Proximitor Sensor. The system delivers an output of 0.787 V/mm (20 mV/mil), providing a linear range of 12.7 mm (500 mils)—substantially greater than the 2.0 mm (80 mils) range of 8 mm probes or the 4.0 mm (160 mils) range of 11 mm probes. This extended linear range is essential for differential expansion measurement because steam turbine rotors and casings expand at different rates during startup, load changes, and shutdown, with total differential movement potentially exceeding 10 mm on large units. 
 
  • Steam Turbine Generators:Monitors thermal growth effects on internal clearances
  • Large Industrial Gas Turbines:Tracks heavy rotor behavior under high-temp cycles
  • High-Capacity Process Compressors:Axial movement & shaft expansion in critical loops
  • Heavy-Duty Industrial Pumps & Motors:Prevents mechanical rubbing in high-HP machinery
This content has been produced using multiple sources.Amikon takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
Sliding Bracket Assembly: It is highly recommended to install the probe into an official Bently Nevada Sliding Bracket Assembly. The base plate is bolted onto the turbine casing structure, while the probe sits inside a moveable sliding carriage.Calibration Verification: This sliding carriage layout allows technicians to physically slide the entire probe assembly back and forth to safely simulate shaft collar movements and verify the loop's electrical scaling without shutting down or opening the turbine housing.

FAQs

  • What is the 330851-02-000-060-50-00-05?+
    The Bently Nevada 330851-02-000-060-50-00-05 is a 3300 XL 25 mm Proximity Probe for continuous, non-contact measurement of shaft vibration, displacement, and differential expansion in large turbomachinery
  • What is the primary application of a 25 mm proximity probe?+
    Unlike standard 8 mm probes used for vibration, the 25 mm probe is specifically engineered for differential expansion measurements.
  • What is the sensitivity and scale factor?+
    The standard scale factor for a 3300 XL 25 mm probe system is 0.787 V/mm (20 mV/mil). This allows it to accurately track much larger physical displacement ranges compared to standard vibration probes.
  • What are the operating temperature limits?+
    The probe head and its integrated FluidLoc triaxial cable are built for extreme conditions, supporting a continuous operating temperature range from –35 °C to +200 °C (–31 °F to +392 °F).
  • What is included in the 05 approval option?+
    While the
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