330850-51-05
330850-51-05
330850-51-05
330850-51-05
330850-51-05
330850-51-05
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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power supplies original Bently Nevada 330850-51-05 Proximitor units, delivering factory-calibrated, authentic instrumentation to ensure consistent signal integrity for your NSv vibration monitoring loops.

330850-51-05

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The Bently Nevada 330850-51-05 is a 3300 XL 25 mm Proximitor Sensor engineered for non-contact monitoring of industrial rotating machinery, now part of Siemens' comprehensive machinery protection and condition monitoring portfolio.
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Technical specifications for 330850-51-05

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330850-51-05
  • Product Family:
    3300 XL 25mm Proximity Transducer System
  • Product Type:
    3300 XL 25 mm Proximitor Sensor
  • Stock:
    1
  • Short brackethorizontal:
    ±25.4 mm (±1.0 in)
  • Long brackethorizontal:
    ±76.2 mm (±3.0 in)
  • ProximitorSensor Material:
    A380 aluminum
  • Sliding BracketMaterial:
    Anodized aluminum andstainless steel
  • Probe adapterverticaladjustment:
    25.4 mm (1.00 in) total travel
  • System Length:
    5 or 9 metres includingextension cable
  • Weight:
    0.22 kg
  • Estimated shipping dimensions:
    8.7x3.5x7cm
  • 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 Specifications Compatibility Firmware & Updates Configuration

Features:

  • High Precision Vibration Signal Processing for Industrial Machinery Monitoring
  • Reliable Operation in Demanding Industrial Environments
  • Seamless Integration With Bently Nevada Monitoring Systems
The 330850-51-05 is engineered to provide dependable vibration monitoring for critical rotating equipment in industrial facilities. Designed as part of an advanced machinery protection system, it helps operators detect abnormal vibration conditions early, allowing preventive action before mechanical failures occur. This capability is essential in industries where continuous operation and equipment reliability are priorities.

Built for use in demanding environments, the 330850-51-05 delivers stable signal handling and consistent performance even in the presence of electrical noise or harsh operating conditions. Its robust design supports accurate data transmission from vibration sensors, helping maintenance teams analyze machine health and maintain optimal equipment performance.

The 330850-51-05 also offers strong compatibility with existing monitoring infrastructures, enabling straightforward installation and system expansion. By integrating the module into a machinery monitoring system, facilities can improve diagnostic capabilities, reduce unplanned downtime, and maintain safer and more efficient operations.

The 330850-51-05 Bently Nevada 3300 XL 25 mm Proximitor Sensor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada Bently Nevada 330850-51-05 3300 XL 25 mm Proximitor Sensor 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 330850-51-05 3300 XL 25 mm Proximitor Sensor Specs

General

  • Manufacturer GE / Bently Nevada
  • Model 330850-51-05
  • Condition New Original ready stock
  • Product Family 330850-51-00,330850-51-01
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.
  • Backward Compatibility: The output signal of the 3300 XL 25 mm preamplifier is fully compatible with the older 7200 series 25 mm and 25 mm DE Integral systems. This allows users to upgrade the preamplifier without changing the monitor configuration.
  • Component Replacement Guidelines: Although the output signal is compatible, Bently Nevada recommends that the entire sensor chain (probe, cable, and preamplifier) ​​must be replaced with 3300 XL 25 mm series components during the upgrade to ensure optimal accuracy.
  • Physical Mounting Interchangeability: This preamplifier supports DIN rail mounting and retains the same 4-hole mounting feet as the older preamplifier, facilitating in-situ replacement on traditional panel mounts.
  • Identification Method: Hardware versions are typically indicated on a label on the side of the module (e.g., Rev. A, B, etc.).
  • Backward Compatibility: Newer hardware versions are fully compatible with older versions in terms of physical installation and electrical output. If your system is functioning correctly, module replacement due to hardware revisions is usually unnecessary.
  • Linearity Verification: Due to the wider linear range of the 3300 XL 25 mm, it is recommended to recalibrate alarm setpoints and gap voltage via software after hardware replacement.
  • Mechanical Zero Position: Adjust the probe installation depth to ensure the preamplifier output voltage matches the expected value.
  • Linearity Check: Manually record voltage values ​​at different displacements using a TK-3 calibrator, ensuring a voltage drop of 3.93V for every 1mm change.
  • Alarm Limits (Setpoints): Enter High/Low alarm limits in the software according to mechanical specifications (such as allowable axial displacement).
Description
The 330850-51-05 Proximitor Sensor serves as the critical signal conversion component within the 3300 XL 25 mm Transducer System. It translates non-contacting probe inputs into accurate analog voltage signals, specifically optimized for monitoring differential expansion on large steam turbine generators by detecting rotor-to-stator axial growth.

Featuring an advanced, thin-profile design, the 330850-51-05 supports both high-density DIN-rail and traditional panel-mount configurations. Its robust electronic architecture includes improved RFI/EMI immunity, ensuring consistent signal integrity even in proximity to high-frequency radio signals and industrial noise, compliant with CE mark standards without requiring special mounting.

Maintenance efficiency is prioritized through the integration of SpringLoc terminal strips on the 330850-51-05, which eliminate the need for specialized tools for field wiring. As a fully compatible upgrade for legacy 7200 and 25 mm DE integral systems, this sensor enables modern performance improvements without requiring changes to existing monitor configurations, provided the full transducer system is replaced. 
Alternative Names
330850-51-00 330850-51-01 330850-51-00 330850-90-05 330850-50-05 330850-50-00
Technical notes
The Bently Nevada 330850-51-05 is factory-calibrated to AISI 4140 steel, and system accuracy is only guaranteed when using Bently Nevada-supplied targets of this material. Operating the 330850-51-05 at a voltage more positive than -23.5 Vdc can significantly reduce the specified linear range.
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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.
Does the Bently Nevada 330850-51-05 require specific monitor configurations if I am replacing a 7200 series system?
No, the Bently Nevada 330850-51-05 output is identical to legacy 7200 systems, allowing for seamless upgrades without monitor reconfiguration, provided you replace the entire transducer system (probe, cable, and sensor).
How does the Bently Nevada 330850-51-05 handle signal rolloff over long wiring runs?
The Bently Nevada 330850-51-05 supports up to 305 meters (1,000 feet) of field wiring, though users should consult the frequency response documentation for signal rolloff characteristics when approaching this maximum distance.
Can the Bently Nevada 330850-51-05 be installed in hazardous areas?
Yes, the Bently Nevada 330850-51-05 carries multiple hazardous area approvals; however, installation must strictly adhere to Bently Nevada drawing 141092 for intrinsic safety or 140979 for non-incendive circuits.
Is the Bently Nevada 330850-51-05 pressure-tested for sealing integrity?
While the Bently Nevada 330850-51-05 probe tip is designed with a Viton O-ring compression seal for differential pressure, individual units are not pressure-tested before shipment; custom testing can be requested from the manufacturer.

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