128276-01F Bently Nevada 5mm/8mm Vibration Conditioner

Product Overview

The Bently Nevada 128276-01F functions as the high-fidelity signal conditioning unit for the 3300 XL Proximity Transducer System. This Proximitor® sensor assembly converts raw eddy current signals from proximity probes into a linear DC voltage output proportional to shaft vibration or position. We supply this unit as 100% Brand New and Original, providing critical data for predictive maintenance on steam turbines, compressors, and high-speed pumps.

Technical Specifications

Engineering Advantages

• Extensive Thermal Operating Envelope: The 128276-01F maintains its calibration across a massive temperature range (-51°C to +177°C). This stability allows the monitor to perform accurately in both cryogenic environments and high-heat turbine halls without signal drift.

• Broad Frequency Response: The 0–10 kHz range captures everything from slow shaft displacement (DC) to high-frequency gear mesh vibration. This ensures that the 128276-01F identifies subtle mechanical changes before they develop into catastrophic failures.

• Vibration-Proof Interconnects: The assembly utilizes ClickLoc™ gold-plated coaxial connectors. This locking mechanism prevents accidental disconnection and maintains low contact resistance, even when the sensor assembly mounts directly on high-vibration machinery frames.

• Simplified Rack Integration: The compact housing supports both DIN rail and panel mounting. It integrates seamlessly with Bently Nevada 3500 and 1900/65A racks, converting the probe signal into the standard 200 mV/mil scale factor required by the rack configuration software.

FAQs

1. Can I use the 128276-01F with non-3300 XL probes?

The 128276-01F is specifically tuned for the impedance of 3300 XL 5mm and 8mm probes. Using legacy 7200 series or third-party probes will invalidate the 200 mV/mil scale factor and compromise machinery protection logic.

2. Does this module require field calibration?

While factory-calibrated, we recommend a loop check using a TK-3 Proximity System Calibrator upon installation. This verifies that the probe, extension cable, and 128276-01F collectively report the correct displacement voltage.

3. What is the significance of the "F" suffix in 128276-01F?

The "F" suffix typically denotes specific manufacturing revisions or packaging configurations that maintain full functional interchangeability with the standard 128276-01. It meets all original technical specifications and safety approvals.

4. How do I protect the sensor from environmental moisture?

When installing the 128276-01F in outdoor or wash-down areas, always house the module inside a NEMA 4X or IP66 rated junction box. Ensure all cable entries use proper liquid-tight conduits to prevent moisture ingress at the ClickLoc™ connectors.