330101-00-11-20-02-05 | Bently Nevada 8 mm Probe, 2.0m Cable

What Is the 330101-00-11-20-02-05?

When rotating machinery requires precise vibration measurement, the 330101-00-11-20-02-05 from Bently Nevada provides a robust solution. This 3300 XL 8 mm probe features a 3/8-24 UNF thread and comes without armor. It is designed for permanent installation in harsh environments. The probe uses a patented TipLoc molding method for a stronger bond between tip and body. Its CableLoc design delivers 330 N (75 lbf) pull strength for secure cable attachment.

Key Features and Technical Specs

• Probe Type: 3300 XL 8 mm, 3/8-24 UNF thread, without armor.
• Total Length: 2.0 meters (6.6 feet) with miniature coaxial ClickLoc connector.
• Linear Range: 2 mm (80 mils), from approximately 0.25 mm to 2.3 mm (10 to 90 mils).
• Incremental Scale Factor: 7.87 V/mm (200 mV/mil) ±5% for standard 5 or 1 meter systems.
• Probe Tip Material: Polyphenylene sulfide (PPS).
• Probe Case Material: AISI 303 or 304 stainless steel.
• Temperature Range (Standard): -52°C to +177°C (-62°F to +350°F).
• Approvals: CSA, ATEX, IECEx.
• Weight: 323 g/m (11.4 oz).

One distinctive spec is the Incremental Scale Factor of 7.87 V/mm. This ensures consistent output over the entire linear range, reducing calibration effort during installation. The probe also offers a deviation from best fit straight line of less than ±0.025 mm (±1 mil) in standard systems, providing reliable data for predictive maintenance.

Applications and Use Cases

Maintenance engineers frequently use the 330101-00-11-20-02-05 for radial vibration monitoring on turbines, compressors, and pumps. Its 8 mm diameter provides thicker encapsulation of the probe coil, making it more rugged against physical abuse. The probe’s FluidLoc cable option prevents oil leakage through the cable interior, which is critical in lubricated machinery. Because of its wide temperature range, it suits both cold outdoor installations and hot process areas.

Installation and Setup

For reliable operation, mount the probe with the recommended gap setting of -9 Vdc (approximately 1.27 mm or 50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a three-conductor shielded triad cable. Keep the distance between the 3300 XL Proximitor Sensor and the monitor within 305 meters (1,000 feet). The miniature coaxial ClickLoc connector simplifies cable attachment and reduces installation time.

Maintenance and Reliability

Regularly inspect the probe tip and cable for physical damage. The stainless steel case resists corrosion, while the PPS tip withstands high temperatures. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The probe is designed to seal differential pressure between tip and case using a Viton O-ring. Periodic verification of the scale factor ensures measurement accuracy over time.

Compatibility and Integration

The 330101-00-11-20-02-05 works with Bently Nevada 3300 XL Proximitor Sensors and compatible monitoring systems. It uses standard coaxial ClickLoc connectors for quick integration. The probe’s output is a negative DC voltage proportional to gap, making it straightforward to interface with most vibration monitoring platforms. Always confirm system compatibility with the latest Bently Nevada documentation.

FAQs About the 330101-00-11-20-02-05

Q: What is the linear range of this probe?

A: The linear range is 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target.

Q: What approvals does the 330101-00-11-20-02-05 carry?

A: It carries CSA, ATEX, and IECEx approvals for hazardous area use.

Q: Can I use this probe in high-temperature environments?

A: Yes, the standard probe operates from -52°C to +177°C (-62°F to +350°F).

Q: What is the recommended gap setting for radial vibration?

A: The recommended gap setting is -9 Vdc, approximately 1.27 mm (50 mils).

Product Support and Availability

The Bently Nevada 330101-00-11-20-02-05 is in stock and ready to ship from Petro Auto Tech. As an industrial automation parts supplier, we ensure fast delivery and reliable service. Contact our team for pricing and availability.