330101-00-12-20-02-05 | Bently Nevada 3300 XL 8 mm Probe

Introduction: The Evolution of Vibration Monitoring

In the world of industrial machinery, the ability to monitor vibration accurately has transformed maintenance practices. Older systems often failed to detect subtle changes until catastrophic failure occurred. The 330101-00-12-20-02-05 from Bently Nevada represents a significant step forward in this evolution, offering robust and precise measurement capabilities.

This 3300 XL 8 mm probe is engineered for demanding environments where reliability is non-negotiable. Its design incorporates lessons learned from decades of field experience, resulting in a product that meets the needs of modern predictive maintenance programs.

Key Features and Technical Specifications

The 330101-00-12-20-02-05 is part of the Bently Nevada 3300 XL family, known for its durability and accuracy. Below are the core specifications that define this probe:

• Product Type: 3300 XL 8 mm Probe with 3/8-24 UNF thread, without armor.
• Unthreaded Length: 0.0 inches (option 00).
• Overall Case Length: 1.2 inches (option 12).
• Total Length: 2.0 meters (6.6 feet) (option 20).
• Connector: Miniature coaxial ClickLoc connector with standard cable (option 02).
• Approvals: CSA, ATEX, IECEx.

One distinctive feature is the patented TipLoc molding method, which provides a more robust bond between the probe tip and body. Additionally, the CableLoc design offers 330 N (75 lbf) pull strength, ensuring the cable remains securely attached even under stress.

The probe tip is made of polyphenylene sulfide (PPS), and the case is constructed from AISI 303 or 304 stainless steel. These materials contribute to the probe's ruggedness and resistance to physical abuse.

Performance Metrics and Linear Range

For accurate vibration measurement, the 330101-00-12-20-02-05 offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target. The recommended gap setting for radial vibration is -9 Vdc, corresponding to approximately 1.27 mm (50 mils).

The incremental scale factor (ISF) is 7.87 V/mm (200 mV/mil) ±5% for standard 5 or 1 meter systems, measured over the 80 mil linear range from 0°C to +45°C. This ensures consistent and reliable output.

Deviation from best fit straight line (DSL) is less than ±0.025 mm (±1 mil) for standard 5 or 1 meter systems, indicating high linearity.

Installation and Setup

Proper installation is crucial for optimal performance. The 330101-00-12-20-02-05 uses a 3/8-24 UNF thread, making it compatible with standard mounting fixtures. When installing, ensure the probe is positioned at the recommended gap to achieve the desired -9 Vdc output.

Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) conductors, preferably a 3-conductor shielded triad cable with tinned wiring. The maximum length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). For longer runs, refer to the frequency response graphs in the datasheet to understand signal rolloff.

Maintenance and Reliability

Regular inspection of the probe and its connections is recommended to ensure long-term reliability. The probe is designed to withstand harsh conditions, but periodic checks can prevent issues. The probe's operating temperature range is -52°C to +177°C for standard probes, making it suitable for many industrial environments.

Additionally, the probe's design includes a Viton® O-ring to seal differential pressure between the tip and case, reducing the risk of moisture ingress. However, probes are not pressure tested before shipment, so for applications requiring pressure testing, contact the custom design department.

Compatibility and Integration

The 330101-00-12-20-02-05 is designed to work with Bently Nevada 3300 XL extension cables and Proximitor sensors. The miniature coaxial ClickLoc connector ensures a secure and reliable connection. This probe is commonly used in rotating machinery monitoring systems, including turbines, compressors, and pumps.

With approvals including CSA, ATEX, and IECEx, this probe can be deployed in hazardous areas where intrinsic safety is required. Always verify that the complete system meets the necessary certification for your specific application.

Common Questions About the 330101-00-12-20-02-05

What is the linear range of this probe?

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

What is the recommended gap setting for radial vibration?

The recommended gap setting is -9 Vdc, which corresponds to approximately 1.27 mm (50 mils).

What is the pull strength of the CableLoc design?

The CableLoc design provides 330 N (75 lbf) pull strength, ensuring secure attachment of the probe cable and tip.

What approvals does this probe have?

The probe has CSA, ATEX, and IECEx approvals.

Support and Availability

The 330101-00-12-20-02-05 is available through Petro Auto Tech. As an industrial automation parts supplier, Petro Auto Tech can provide this probe and assist with any questions regarding its application. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.