Product Overview

The Bently Nevada 330101-00-08-10-02-05 is a high-performance 8 mm proximity probe belonging to the 3300 XL Transducer System. This sensor is engineered for non-contacting displacement and vibration measurements, providing critical data for machinery protection systems. A primary advancement in this model is its superior resistance to radio frequency interference (RFI) and electromagnetic interference (EMI), which allows for stable signal transmission even in non-metallic or fiberglass housings without the need for shielded conduit. Additionally, the unit features an integrated electrical isolation base, simplifying installation by removing the need for separate isolator plates. This probe is a cornerstone of Turbine Supervisory Instrumentation (TSI), ensuring long-term reliability for high-speed rotating assets.

Hardware Specifications and Physical Parameters

• Tip Diameter: 8 mm

• Thread Configuration: 3/8-24 UNF-2A (Imperial)

• Threaded Length: 0.8 inches

• Total Case Length: 1.0 inch

• Lead Cable Length: 1.0 Meter (approx. 3.3 feet)

• Connector Type: Miniature coaxial ClickLoc (gold-plated brass)

• Measurement Range: 2.0 mm (80 mils) standard linear range

• Scale Factor: 7.87 V/mm (200 mV/mil)

• Weight: 0.06 kg (Net) / 0.15 kg (Estimated Shipping)

• Dimensions: 1.8 cm x 1.6 cm x 123 cm (Probe and lead total)

• Certifications: ATEX, IECEx, and CSA approved for hazardous areas

Industrial Deployment and Operational Roles

Radial Vibration and Shaft Stability

In high-speed centrifugal compressors and pumps, this 8 mm probe tracks the orbital path of the shaft within its bearings. It identifies excessive vibration that could indicate rotor imbalance or mechanical loosening.

Axial Thrust Positioning

The 330101-00-08-10-02-05 is frequently used in pairs to monitor axial (thrust) position. By measuring the distance to a shaft collar, it prevents catastrophic metal-to-metal contact between rotating and stationary turbine components.

High-Density Monitoring Environments

Thanks to its DIN-rail compatible footprint and reduced RFI sensitivity, this probe is ideal for modern control rooms where numerous electronic devices are packed into small spaces, ensuring clean data without cross-talk interference.

Tachometer and Speed Feedback

Beyond vibration, these probes are often configured to sense gear teeth or shaft notches to provide precise RPM data and phase reference (Keyphasor) signals to the 3500 Monitoring System.

FAQ

Q: Is this 3300 XL probe compatible with older 3300 Proximitor sensors?

A: While the 3300 XL series is generally backward compatible, it is highly recommended to pair the 330101-00-08-10-02-05 with a 3300 XL Proximitor to ensure the best linearity and temperature stability as per the manufacturer's specifications.

Q: What is the benefit of the gold-plated ClickLoc connector?

A: The ClickLoc connector provides a positive-locking mechanism that prevents the connection from vibrating loose. The gold plating ensures high conductivity and prevents corrosion in moist or chemically aggressive environments.

Q: Do I need separate isolation plates for the mounting base?

A: No. One of the design improvements of the 330101-00-08-10-02-05 is the integrated electrical isolation within the mounting base, which simplifies the BOM and reduces installation time.

Q: Can this probe be installed in a fiberglass enclosure?

A: Yes. Due to its enhanced RFI immunity, this probe does not require a metallic housing or shielded conduit to meet CE marking requirements for electromagnetic compatibility.

Q: What is the significance of the 1.0-meter cable length?

A: This "probe lead" length is designed to reach an extension cable, which then connects to the Proximitor. The total length (typically 5m or 9m) must match the Proximitor's calibration for accurate readings.