The Bently Nevada 330104-00-08-05-01-05 represents the industry standard for non-contacting displacement and vibration measurements in critical rotating machinery. As a core component of the 3300 XL 8mm Proximity Transducer System, this probe tracks shaft motion and radial position with sub-micron precision.
Engineers rely on this specific model for high-speed turbines, compressors, and motors where physical contact with the shaft is impossible. By utilizing eddy current technology, the probe generates a high-frequency electromagnetic field that detects target movement without mechanical wear. This ruggedized 8mm version provides a linear range and superior signal stability, ensuring your Turbine Supervisory Instrumentation (TSI) receives accurate data for predictive maintenance and emergency shutdowns in the harshest industrial environments.
The part number 330104-00-08-05-01-05 defines a specific hardware configuration tailored for demanding industrial mounting requirements. Below is the technical breakdown of this configuration:
This base model identifies the standard 8mm tip diameter probe with M10 x 1 threads, designed for heavy-duty vibration monitoring.
This selection indicates a 0.0 mm (0.0 in) unthreaded length. The entire case body features threads for maximum mounting flexibility within the bracket or housing.
The probe features an 80 mm (3.2 in) total case length, providing sufficient reach through machine casings while maintaining structural rigidity.
This specifies a 0.5 metre (1.6 feet) total cable length. Short cable leads like this are typically used in applications where the junction box or Proximitor sensor is mounted immediately adjacent to the probe entry point.
This designates the use of a Miniature coaxial ClickLoc™ connector with a standard cable. The connector features a gold-plated finish and a locking mechanism to prevent disconnection due to machine vibration.
This provides Multiple Approvals (CSA, ATEX, IECEx). It certifies the probe for use in intrinsically safe and non-incendive environments, making it suitable for global oil and gas or chemical processing installations.
| Parameter | Specification Details |
| Probe Tip Diameter | 8 mm (0.31 in) |
| Thread Size | M10 x 1 (Metric) |
| Linear Range | 2.0 mm (80 mils), starting at approx. 0.25 mm (10 mils) |
| Scale Factor (ISF) | 7.87 V/mm (200 mV/mil) ± 6.5% |
| Operating Temperature | -51 °C to +177 °C (-60 °F to +351 °F) |
| Pressure Rating | Sealing up to 70 psi (4.8 bar) |
| Material | Polyphenylene sulfide (PPS) tip; Stainless steel case |
| Weight | 0.15 kg (Typical for 0.5m lead) |
Successful deployment of the 330104-00-08-05-01-05 requires precise physical calibration to ensure the sensor operates within its linear range.
Before tightening the mounting nuts, technicians must set the "Gap." Connect the probe to a powered Proximitor sensor and use a multimeter to measure the DC voltage. For a standard 3300 XL 8mm system, aim for a -10.0 VDC bias, which typically represents the center of the linear range (the "Sweet Spot").
Maintain a minimum bend radius of 25.4 mm (1.0 in) for the 0.5m lead. Although this model features a rugged construction, sharp kinks in the coaxial cable can cause impedance mismatches, resulting in "noise" or false vibration readings.
Always use the ClickLoc™ feature correctly. Ensure the connectors are clean and dry before mating. In high-moisture environments, applying specialized connector silicone grease or using heat-shrink tubing is highly recommended to prevent signal degradation.
The Bently Nevada 3300 XL series is engineered for seamless backward compatibility. You can replace older 3300 8mm probes with this 330104 model without changing existing 3300 XL Proximitor sensors, significantly reducing upgrade costs for aging TSI systems.
The hardware excels in RFI/EMI Immunity. It operates reliably without shielded conduits even when installed in fiberglass enclosures, provided the local electrical codes allow. Furthermore, the 330104's stainless steel housing and PPS tip resist corrosion from common industrial lubricants and chemical vapors, ensuring a service life often exceeding a decade in continuous operation.
Q1: Can I use this 0.5m probe with a 5.0m Proximitor sensor?
A1: No. The total system length (Probe + Extension Cable) must match the Proximitor’s calibration (typically 5.0m or 9.0m). If you use a 0.5m probe, you must use a 4.5m extension cable to reach a 5.0m total system length.
Q2: How do I know if the probe tip is damaged or shorted?
A2: You can perform a resistance check. A healthy 3300 XL 8mm probe typically shows a resistance between 4.0Ω and 8.0Ω between the center conductor and the outer shield of the connector. An "Open" reading indicates a broken internal wire.
Q3: Is the 330104-00-08-05-01-05 compatible with non-ferrous metals?
A3: This probe is factory-calibrated for AISI 4140 steel. While it can detect non-ferrous metals (like aluminum or copper), the Scale Factor will change drastically, and the readings will not be accurate without custom calibration at the Proximitor level.
Q4: What does the "05" Approval Option actually cover?
A4: The "05" option is a comprehensive global certification. It covers North American (CSA) requirements for Class I, Div 1, and European/International (ATEX/IECEx) requirements for Zone 0, 1, and 2, allowing for a single part number to be used across global facilities.
