330191-00-16-50-00 | Bently Nevada 3300 XL 8mm ETR Probe

Product Overview

The Bently Nevada 330191-00-16-50-00 is a 3300 XL 8 mm ETR proximity probe designed for precise vibration and position measurements in rotating machinery. This model features a 3/8-24 UNF thread, a 1.6-inch overall case length, and a 5.0-meter (16.4 feet) total cable length. It comes without armor and without agency approval options, making it a versatile choice for standard industrial applications.

As part of the trusted 3300 XL series, this probe delivers reliable performance in demanding environments. The 8 mm probe tip uses a thicker encapsulation of the probe coil in molded PPS plastic, providing enhanced ruggedness and resistance to physical abuse. The larger diameter of the probe body also contributes to a stronger, more robust case, ensuring long-term durability.

Key Technical Specifications

Part Number: 330191-00-16-50-00

Model: 3300 XL 8 mm ETR Probe, 3/8-24 UNF thread, without armor

Total Length: 5.0 meters (16.4 feet)

Overall Case Length: 1.6 inches

Unthreaded Length: 0.0 inches (minimum)

Probe Tip Material: Polyphenylene sulfide (PPS)

Probe Case Material: AISI 303 or 304 stainless steel (SST)

Cable Type: 75Ω triaxial, FEP insulated (standard) or PFA insulated (extended temperature range)

Tensile Strength: 330 N (75 lbf) probe case to probe lead; 270 N (60 lbf) at connectors

Connector Material: Gold-plated brass or gold-plated beryllium copper

Maximum Connector Torque: 0.565 N•m (5 in•lbf)

Probe Weight: 323 g/m (11.4 oz)

This 5-meter probe is specifically designed for use with the 5-meter Proximitor sensor only. Ensure your system matches this requirement for optimal performance.

Industry Applications

The 330191-00-16-50-00 is ideal for vibration monitoring and shaft position measurement in turbomachinery, compressors, pumps, and other rotating equipment. Its robust construction and high tensile strength make it suitable for installations where mechanical stress and environmental factors are a concern.

In petrochemical plants, refineries, and power generation facilities, this probe helps detect early signs of machinery faults, enabling predictive maintenance and reducing unplanned downtime. The optional FluidLoc cable option prevents oil and other liquids from leaking out of the machine through the cable's interior, adding an extra layer of protection in fluid-rich environments.

Installation & Setup Guidance

When installing the 330191-00-16-50-00, follow these best practices:

Verify the thread size (3/8-24 UNF) matches your mounting hole. Maximum thread engagement is 0.563 inches.

Ensure the probe tip is clean and free of debris before installation.

Use the specified connector torque (0.565 N•m) to avoid damaging the gold-plated connectors.

Route the cable away from high-heat sources and sharp edges to prevent damage.

For systems requiring agency approvals, confirm that the '00' option (not required) meets your site's regulatory demands.

Proper installation is critical to achieving accurate measurements and maximizing the probe's lifespan.

Maintenance & Reliability

The 3300 XL series is engineered for minimal maintenance. The patented TipLoc molding method provides a robust bond between the probe tip and body, while the CableLoc design ensures a secure cable attachment with 330 N (75 lbf) pull strength. These features reduce the risk of mechanical failure and signal degradation over time.

Regularly inspect the probe cable and connectors for signs of wear or damage. In harsh environments, consider using the extended temperature range cable (PFA insulated) for improved resistance to high temperatures. The probe's sealing material, a Viton® O-ring, helps maintain differential pressure between the tip and case, but note that probes are not pressure tested prior to shipment.

Compatibility & Integration

This probe is part of the 3300 XL system and is compatible with Bently Nevada Proximitor sensors, specifically the 5-meter model. It uses a 75Ω triaxial cable, ensuring consistent signal transmission. The probe's entity parameters are met when used with BN extension cables and connected to BN Prox systems.

For new installations, verify that your monitoring system supports the 5-meter cable length. One-meter systems do not use an extension cable, so this model is not suitable for those configurations.

Selection Guide & Purchasing Advice

Before ordering the 330191-00-16-50-00, confirm the following:

Your Proximitor sensor is rated for a 5-meter cable.

The thread type (3/8-24 UNF) matches your mounting requirements.

You do not require agency approvals (option '00').

Your operating temperature falls within the probe's temperature classification (see temperature schedule in the datasheet).

BluePLC Industrial offers this genuine Bently Nevada probe in new, original factory packing with a 12-month warranty. Contact our team for current availability and lead times.

For complete technical specifications for the 330191-00-16-50-00, please contact BluePLC Industrial.