330881-28-00-135-03-00 Bently Nevada 3300 XL ProxPac Transducer

Product Introduction

The 330881-28-00-135-03-00 is a high-performance integrated sensor housing belonging to the 3300 XL 8mm ProxPac XL family. This system combines the probe and Proximitor sensor into a single, ruggedized unit designed for harsh industrial environments. 

Engineering Specification Matrix

• Brand: Bently Nevada
• Part Number: 330881-28-00-135-03-00
• Measurement Type: Non-contacting Eddy Current Displacement
• Linear Range: 2 mm (80 mils) starting at 0.25 mm (10 mils) gap
• Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±5%
• Frequency Response: 0 to 10 kHz (+0, -3 dB)
• Power Supply: -17.5 Vdc to -26 Vdc (max 12 mA consumption)
• Ingress Protection: IP66 (verified by BASEEFA)
• Material Integrity: UV-resistant glass-reinforced PPS housing with 304 Stainless Steel probe case
• Connection Type: Gold-plated brass ClickLoc connectors
• Weight: 1.44 Kg (3.2 lbs) typical

Configuration Breakdown

• Model: 330881 (ProxPac XL Transducer)
  • -28 — 3300 XL 8 mm Probe with Multiple Approvals
    • -00 — No Standoff Adapter (B Dimension)
      • -135 — 135mm Probe Penetration (C Dimension)
        • -03 — One M20 fitting, two plugs
          • -00 — No outer sleeve assembly

Global PLC Spare HUB's Insight

The 330881-28-00-135-03-00 is specifically engineered to eliminate the need for separate Proximitor mounting, which reduces installation footprint and wiring complexity. Its glass-reinforced PPS housing offers superior resistance to chemical exposure compared to standard aluminum enclosures.

• Target Equipment: Ideal for Steam Turbines, Centrifugal Compressors, and High-Speed Gearboxes.
• Diagnostic Capabilities: Optimized for detecting Radial Vibration, Thrust Position, and Shaft Eccentricity.
• Environmental Advantage: The -39°C to 115°C impact-rated housing ensures reliability in extreme outdoor environments.

Shipping and Logistics

• Origin: Made in the U.S.A.
• Condition: Original Factory Sealed (New)
• Warranty Coverage: 12-Month Comprehensive Factory Warranty
• Global Logistics: Express delivery through FedEx, UPS, and DHL
• Dispatch Timeline: Guaranteed shipment within 24 to 48 hours

Professional FAQ

• Why is the -23.5 Vdc supply threshold critical for the 330881-28-00-135-03-00?
• Operating at a more positive voltage (e.g., -22 Vdc) when using safety barriers can truncate the linear range, leading to clipping in high-vibration signals. Ensure your power supply remains between -23 Vdc and -26 Vdc when barriers are present.

• How does the 135mm penetration depth affect my mounting hardware?
• The 135mm (C dimension) represents the reach from the mounting surface to the probe tip. If your machine casing or bracket is thinner than this, you would typically require a standoff adapter (B dimension), which is not included in this -00 configuration.

• What cabling is recommended for field wiring back to the monitor?
• We strongly recommend using 3-conductor shielded triax cable (16 to 24 AWG). This maximizes noise immunity. Remember that while the system supports up to 305 meters, high-frequency signal rolloff increases with cable length.

• Does the PPS housing require specialized grounding?
• The housing contains conductive fibers and a grounding liner. For proper E-E-A-T compliance and signal integrity, the grounding liner and retaining plate must be correctly bonded to the machine earth to prevent electrostatic buildup.

• Buying Guide: How do I verify this is the correct ProxPac for my application?
• Check your existing sleeve length. This unit has no outer sleeve assembly (-00) and a fixed 135mm penetration. If you are replacing an older 7200 series unit, verify that your monitoring rack is compatible with the 3300 XL 200 mV/mil scale factor.

Support and Diagnostic Capability

The 330881-28-00-135-03-00 provides a buffered output for portable data collectors. This allows maintenance teams to perform Bode and Polar plot analysis without interrupting the primary protection loop. Its high 10 kHz frequency response captures precise subsynchronous and supersynchronous vibration data crucial for early bearing failure detection.

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