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330881-28-04-70-03-02

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The 330881-28-04-70-03-02 is a fully assembled PROXPAC XL proximity transducer system designed to provide precise, non-contact measurement of shaft displacement and vibration in critical rotating machinery.
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Technical specifications for 330881-28-04-70-03-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330881-28-04-70-03-02
  • Product Family:
    PROXPAC XL Proximity Transducer Assembly
  • Fittings Kit:
    One 3/4-14 NPT fitting, one 3/4-14 NPT to 1/2-14 NPT SST reducer, two plugs
  • Mounting Thread:
    3/4-14 NPT
  • Input Voltage:
    −17.5 VDC to −26 VDC (non-explosion-proof)
  • Recommended Gap Setting:
    1.27 mm (50 mils)
  • Incremental Scale Factor (ISF):
    7.87 V/mm (200 mV/mil) ±5%
  • Probe DC Resistance:
    50 Ω
  • Weight:
    1.5 kg
  • Estimated shipping dimensions:
    37x9x8cm
  • 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 Specifications
 

Features:

  • Interface Between the 330881‑28‑04‑70‑03‑02 PROXPAC XL Transducer and 3300/3500 Monitoring Systems
  • Combines Capability of Shaft Displacement and Vibration Measurement with 70 mm Probe Extension
  • Operates in Conjunction with 3300 XL and 3500 Series Monitors for Reliable Machine Condition Monitoring
The 330881‑28‑04‑70‑03‑02 operates as a precision PROXPAC XL proximity transducer assembly, providing accurate, non-contact shaft displacement and vibration measurement for critical rotating machinery. It continuously converts mechanical shaft motion into electrical signals through its 8 mm probe with 70 mm penetration and transmits these signals to the 3300 XL or 3500 Series monitoring systems to support continuous machine protection and condition monitoring.

The 330881‑28‑04‑70‑03‑02 provides essential shaft displacement and vibration measurement functions for the entire monitoring system and is a critical component of the machine protection path, directly affecting the accurate operation of the 3300 XL and 3500 Series monitors. One or more 330881‑28‑04‑70‑03‑02 transducer assemblies may be required per machine depending on the number of shafts and measurement points being monitored.

For critical machinery monitoring applications, the 3300/3500 system can be configured with multiple 330881‑28‑04‑70‑03‑02 transducer assemblies installed on redundant measurement points. In addition to standard single-probe operation, the redundant configuration ensures continuous shaft displacement and vibration monitoring even if one transducer fails.

The 330881-28-04-70-03-02 Bently Nevada PROXPAC XL proximity transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
 
Bently Nevada 330881-28-04-70-03-02 PROXPAC XL Proximity Transducer Assembly 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
 Bently Nevada 330881-28-04-70-03-02 PROXPAC XL Proximity Transducer Assembly Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 330881-28-04-70-03-02
  • Condition New Original ready stock
  • Product Family 330881-28-04-85-03-02 ,330881-28-04-034-06-02,330881-28-04-080-06-02
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.
Description
This assembly integrates a high-precision 8 mm probe, a Proximitor® sensor, and an optimized cable system into a single pre-configured unit, ensuring reliable signal transmission to the 3300 XL and 3500 Series monitoring systems.

The 70 mm probe penetration length allows the transducer to be deployed in applications requiring extended reach, enabling accurate measurement of shafts in turbines, compressors, pumps, and other high-value rotating equipment. Its robust design ensures repeatable and consistent readings under demanding industrial conditions, including high vibration, temperature fluctuations, and exposure to electromagnetic interference.

The assembly’s rugged housing and standardized mounting provisions simplify installation and enhance long-term stability, reducing the need for frequent maintenance while maintaining high accuracy over time. By combining mechanical, electrical, and signal-conditioning components in a single, factory-tested unit, the 330881-28-04-70-03-02 minimizes field wiring errors and installation complexity.

This transducer assembly provides critical inputs for machine protection, condition monitoring, and predictive maintenance programs, helping operators detect early signs of imbalance, misalignment, bearing wear, and other mechanical issues. With proven compatibility with 3300 XL and 3500 monitoring systems, the 330881-28-04-70-03-02 delivers dependable, high-quality displacement and vibration signals to support continuous machine protection and operational reliability.
Alternative Names
330881-28-04-85-03-02 330881-28-04-034-06-02 330881-28-04-080-06-02
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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.
What is the probe diameter and penetration length of the 330881-28-04-70-03-02?
The transducer features an 8 mm probe with a 70 mm penetration length for precise shaft displacement and vibration measurement.
Which monitoring systems is this assembly compatible with?
It is fully compatible with Bently Nevada 3300 XL and 3500 Series monitoring systems.
What type of environments can the 330881-28-04-70-03-02 operate in?
The assembly is designed for industrial environments, offering rugged housing and stable signal performance under vibration, temperature fluctuations, and electromagnetic interference conditions.

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