330704-000-050-10-01-05 | Bently Nevada | 3300 XL 11 mm Proximity Probes

A. Technical Overview

The Bently Nevada 330704-000-050-10-01-05 is a high-stability, 11 mm diameter proximity probe designed for shaft displacement and vibration monitoring in rotating machinery. It processes AC voltage signals generated by eddy current interaction with ferromagnetic targets, converting gap changes into calibrated millivolt outputs per mil (mV/mil). The probe integrates directly with the 3300 XL 11 mm extension cable and 3300/50 or 3500 series monitor modules—no signal conditioning required at the probe tip. It protects the backplane bus by maintaining galvanic isolation between the target surface and system electronics, preventing ground loops and transient coupling. This unit operates within the Bently Nevada 3500 System architecture and interfaces reliably with third-party DCS platforms including Emerson DeltaV (via 3500 RIM), Honeywell Experion PKS (using 3500 I/O cards), and Siemens SIMATIC S7-400 (via analog input modules with 4–20 mA or voltage interface).

B. Detailed Specifications Table

C. Operational Capabilities

This probe monitors shaft position, runout, and vibration in critical rotating equipment across Oil & Gas (centrifugal compressors, gas turbines), Power Generation (steam turbine thrust bearings, generator rotors), Aerospace (test stand engine monitoring), and Heavy Manufacturing (paper machine calenders, large motors). Units are manufactured with G3 conformal coating per IPC-CC-830B for moisture, salt fog, and chemical resistance. They support SIL 2 per IEC 61508 when used with certified 3500 rack configurations. Hot-swap capability is maintained only at the monitor module level—not at the probe—but the probe’s ruggedized M12 connector and stainless-steel housing allow field replacement without rack power-down.

D. Technical FAQ

Q1: Does this probe work with legacy 3300 16-channel monitors (e.g., 3300/16) or only newer 3500 systems?

No. The 330704-000-050-10-01-05 is rated for use with 3300 XL-series monitors (3300/50, 3300/25) and all 3500-series racks (3500/15, 3500/22M, etc.). It is **not compatible** with pre-XL 3300 monitors (e.g., 3300/16) due to differences in oscillator frequency, output impedance, and calibration algorithms. Verify monitor firmware revision ≥4.05 before integration.

Q2: How do I match this probe with extension cables and monitors to maintain calibration traceability?

Use only Bently Nevada-certified 3300 XL extension cables (e.g., 330130-040-00-00 for 4 m length) and calibrate the probe-cable-motor assembly as a single unit per API 670 4th Ed. Section 5.4. Do not mix non-XL cables or substitute third-party cables—the probe’s built-in compensation requires matched XL-series cable capacitance (standard configuration: 100 pF/m ±5%). Monitor channel setup must select “3300 XL 11 mm” sensor type and apply factory-provided linearization coefficients.

E. SEO Meta

SEO Title: 330704-000-050-10-01-05 | Bently Nevada | 3300 XL 11 mm Proximity Probes

Meta Description: Genuine Bently Nevada 330704-000-050-10-01-05 3300 XL 11 mm proximity probes. In stock. Sensitivity: 4.0 V/mm. Linear range: 2.0 mm. G3 coating. Supports 3500 & 3300 XL monitors.