Bently Nevada 330878-X1-00 MOD 177889-01
Bently Nevada 330878-X1-00 MOD 177889-01
Bently Nevada 330878-X1-00 MOD 177889-01
Bently Nevada 330878-X1-00 MOD 177889-01
Bently Nevada 330878-X1-00 MOD 177889-01
Bently Nevada 330878-X1-00 MOD 177889-01
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330878-X1-00 MOD 177889-01

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The Bently Nevada 330878-X1-00 MOD 177889-01 is a heavy-duty 3300 XL 50 mm Proximitor Sensor engineered for non-contacting shaft displacement and vibration measurement in critical industrial turbomachinery.
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Technical specifications for 330878-X1-00 MOD 177889-01

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330878-X1-00 MOD 177889-01
  • Product Family:
    Proximitor Sensor
  • Product Type:
    Proximitor Sensor
  • Stock:
    1
  • Linear Range:
    27.9 mm (1100 mils), operating from 1.3 to 29.2 mm (50 to 1150 mils)
  • Average Scale Factor (ASF):
    394 mV/mm (10 mV/mil) nominal
  • Deviation from Best Fit Straight Line (DSL):
    Less than ±0.74 mm (±29 mils)
  • Power Supply Requirement:
    -17.5 Vdc to -26 Vdc at 12 mA
  • Output Resistance:
    50 Ω
  • Field Wiring Terminal:
    SpringLoc terminal strips accepting 0.2 to 1.5 mm² (16 to 24 AWG) triad cable
  • Sensor Housing Material:
    A380 Aluminum
  • Target Material Calibration:
    Factory calibrated to AISI 4140 steel (minimum 102 mm / 4.0 in diameter flat target)
  • Sensor Operating Temperature:
    -51°C to +100°C (-60°F to +212°F)
  • Maximum Consumption:
    -23 Vdc to -26 Vdc with barriers
  • Weight:
    0.2 kg
  • Estimated shipping dimensions:
    8.8x3.5x7cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Installation & Integration Environmental Ratings Connectivity

Features:

  • Delivers a nominal 394 mV/mm (10 mV/mil) output scale factor across an extended 27.9 mm (1100 mils) linear range.
  • Incorporates screwless SpringLoc terminal strips that accept 0.2 to 1.5 mm² (16 to 24 AWG) field wiring.
  • Features built-in RFI/EMI filtering in an A380 aluminum housing for European CE compliance.
The Bently Nevada 330878-X1-00 MOD 177889-01 is a high-performance 3300 XL series Proximitor Sensor currently available in factory-new condition for critical machinery protection.

It functions as a core signal conditioning unit that converts radio frequency proximity probe signals into stable DC voltage output for real-time monitoring of turbomachinery status.

Always ensure complete system matching across all 3300 XL transducer components and verify mounting clearances against target materials during field installation.

The Bently Nevada 330878-X1-00 MOD 177889-01 Proximitor Sensor is fully supported with genuine quality and original specifications by the manufacturer (OEM).
Bently Nevada 330878-X1-00 MOD 177889-01 Proximitor Sensor Manuals & Datasheets 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.
  • Differential expansion (DE) measurement on large steam turbine generators.
  • Rotor expansion (RX) monitoring relative to machine casings under thermal stress.
  • Non-contacting shaft axial position and displacement measurement in industrial turbomachinery.
  • Supports dual hardware mounting configurations including high-density DIN-rail snaps and standard panel installation.
  • Features tool-free SpringLoc terminal strips to streamline field wiring connection and long-term maintenance.
  • Integrates seamlessly with matching 3300 XL 50 mm proximity probes and extension cables into machinery protection loops.
  • Sensor housing operates reliably across severe field temperature limits from -51°C to +100°C (-60°F to +212°F).
  • Robust enclosure protects internal signal conditioning electronics against high industrial relative humidity.
  • High RFI and EMI resistance prevents signal degradation caused by nearby industrial radio frequency sources.
  • Transmits a continuous analog DC voltage signal proportional to target displacement back to machinery monitoring systems.
  • Features screwless SpringLoc terminal strip connectors to streamline field wiring without specialized installation tools.
  • Utilizes dedicated coaxial interface connections to maintain high-frequency signal integrity from proximity probes.
Description
Bently Nevada 330878-X1-00 MOD 177889-01 is a high-precision 3300 XL 50 mm Proximitor Sensor designed to convert radio frequency signals from eddy current proximity probes into continuous proportional voltage outputs. Operating as an essential signal conditioning interface within machinery protection systems, it enables real-time tracking of shaft displacement and mechanical clearance without physical contact. The unit ensures long-term operational integrity and signal fidelity across critical rotating machinery protection loops.

Engineered specifically for heavy industrial applications, the 330878-X1-00 MOD 177889-01 is primarily utilized for differential expansion (DE) and rotor expansion (RX) monitoring in large steam turbine generators. It effectively captures the differential thermal growth variance between the turbine rotor and casing under changing load and temperature conditions. The sensor supports redundant single-transducer or complementary dual-transducer configurations across shaft collars to prevent catastrophic rotor-to-casing contact.

Housed in a durable A380 aluminum enclosure, the 330878-X1-00 MOD 177889-01 supports both high-density DIN-rail installations and traditional panel mounting setups. Its integrated SpringLoc terminal strips simplify field wiring connections, while advanced internal filtering provides European CE-compliant immunity against electromagnetic and radio frequency interference. It connects seamlessly with compatible 50 mm probes and extension cables to deliver robust vibration and axial position measurement.
Alternative Names
330878X100 330878 X1 00 330878 X1 0 177889-01 17788901 330878-X1-00-MOD-177889-01 Bently Nevada 3300 XL 50mm Proximitor Sensor
Technical notes
The Bently Nevada 330878-X1-00 MOD 177889-01 incorporates enhanced RFI/EMI immunity that complies with European CE standards without special enclosure requirements and features tool-free SpringLoc wiring terminals.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Which primary application relies on the Bently Nevada 330878-X1-00 MOD 177889-01?
It is primarily applied in measuring differential expansion (DE) or rotor expansion (RX) on large steam turbine generators.
What target material is default-calibrated for the Bently Nevada 330878-X1-00 MOD 177889-01?
The sensor comes default factory-calibrated to AISI 4140 steel.
What type of field cable is recommended for connecting the Bently Nevada 330878-X1-00 MOD 177889-01 to monitoring systems?
A 3-conductor shielded triad cable with conductor sizes between 0.2 to 1.5 mm² (16 to 24 AWG) is recommended.
How are field wiring conductors connected to the Bently Nevada 330878-X1-00 MOD 177889-01?
Field wiring connects via screwless SpringLoc terminal strips that require no specialized installation tools.
Is the Bently Nevada 330878-X1-00 MOD 177889-01 backwards compatible with older 7200 50 mm systems?
Yes, its output voltage scale (10 mV/mil) matches legacy 7200 and 50 mm DE Integral systems, though all system transducers (probe, cable, sensor) must be upgraded to 3300 XL components simultaneously.
How can I request a price quotation or check availability for the Bently Nevada 330878-X1-00 MOD 177889-01?
You can submit a direct RFQ or inquiry with your required quantity and delivery location to your specialized industrial sales representative.

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