Bently Nevada 330104-00-08-05-02-00 3300 XL 8 mm Proximity Probe

Introduction

When rotating machinery experiences unexpected vibration, costly downtime and catastrophic failures often follow. The Bently Nevada 330104-00-08-05-02-00 3300 XL 8 mm Proximity Probe provides the precise, non-contact measurement needed to detect shaft vibration and position early. This probe is part of the trusted 3300 XL series, designed for continuous monitoring in harsh industrial environments.

Technical Specifications Breakdown

The 330104-00-08-05-02-00 features a probe tip made of polyphenylene sulfide (PPS) for durability and chemical resistance. The probe case is constructed from AISI 303 or 304 stainless steel (SST), ensuring long-term reliability in corrosive settings. This model includes an unthreaded length of 00 mm, an overall case length of 80 mm, and a total length of 0.5 meter (1.6 feet). It uses a miniature coaxial ClickLoc connector with standard cable, simplifying installation and reducing signal loss. The probe is designed to seal differential pressure between the tip and case using a Viton O-ring, maintaining integrity under varying process conditions.

For electrical performance, the system requires a power supply of -17.5 Vdc to -26 Vdc when installed with a non-incendive circuit, with a maximum consumption of 12 mA. Sensitivity is less than 2 mV change in output voltage per volt change in input voltage, and output resistance is 50 Ω. The nominal probe DC resistance from center conductor to outer conductor is 7.59 ± 0.50 Ω for a 1.0 meter probe length. These specifications ensure accurate and stable readings for critical machinery protection.

Industry Applications

In power generation, the 330104-00-08-05-02-00 monitors turbine shaft vibration, helping operators detect imbalance or misalignment before they cause unplanned shutdowns. In oil and gas facilities, this probe tracks compressor and pump health, reducing maintenance costs by enabling condition-based repairs. Its stainless steel construction and Viton seal make it suitable for environments with moisture or mild chemicals.

Installation & Setup Guidance

Proper installation is critical for accurate measurements. Mount the probe with a gap of 1.27 mm (50 mils) to an AISI 4140 steel target for optimal performance. Use the miniature coaxial ClickLoc connector to secure the cable, ensuring a tight connection to prevent signal interference. Verify that the power supply provides between -17.5 Vdc and -26 Vdc, and avoid operating at voltages more positive than -23.5 Vdc to maintain full linear range. For best results, calibrate the system with the provided AISI 4140 steel target.

Maintenance & Reliability

Regular inspection of the probe tip and cable connector prevents measurement drift. Check the Viton O-ring for signs of wear or damage, especially in high-pressure applications. The PPS tip resists many chemicals, but avoid direct contact with strong acids or bases. Periodically verify the probe DC resistance to ensure it remains within 7.59 ± 0.50 Ω for the 1.0 meter length. Following these steps extends probe life and maintains system accuracy.

Selection Guide & Purchasing Advice

Before purchasing the 330104-00-08-05-02-00, confirm that your system uses 3300 XL 8 mm components and requires a 0.5 meter total length with a miniature coaxial ClickLoc connector. Verify compatibility with your existing 3300-series Proximitor Sensor and extension cable. For reliable sourcing, plcmatrix.com offers this probe along with technical support to ensure you select the correct configuration for your application.