Description

Designed for high-reliability vibration and position monitoring, the Bently Nevada 330101-00-46-10-02-05 is a premium 8 mm proximity probe featuring a 3/8-24 UNF thread without armor. This specific variant is configured with a fully threaded case (0.0 in unthreaded length) and an overall case length of 4.6 inches. It is equipped with a 1.0-meter (3.3 feet) standard coaxial cable terminating in a miniature ClickLoc coaxial connector (without connector protector) and carries comprehensive hazardous area approvals including CSA, ATEX, and IECEx.

Engineered for high-durability service in demanding industrial environments, this probe is capable of continuous operation in temperature ranges from -52 degC to +177 degC. It provides a linear measurement range of 2.0 mm (80 mils) with an industry-standard nominal sensitivity of 7.87 V/mm (200 mV/mil) when paired with a calibrated 3300 XL Proximitor. The integrated Viton O-ring ensures an effective pressure seal between the probe tip and the case, preventing fluid ingress from bearing housings. Additionally, this configuration includes CSA, ATEX, and IECEx agency approvals, making it certified for installation in hazardous area locations.

Features

• Non-Contact Measurement: Performs high-precision eddy-current displacement measurements of shaft vibration and position.
• Optimized Threaded Case: Built with a 3/8-24 UNF-2A thread, 4.6-inch overall case length, and a 0.0-inch unthreaded length for flush-mount or shallow-recess bearing applications.
• Miniature ClickLoc Connector: Equipped with a robust coaxial connector for low-noise signal transmission to the extension cable.
• Standard Flexible Cable: 1.0-meter non-armored standard coaxial cable ensures easy routing and reliable mechanical flexibility.
• Sealed Construction: Built with a high-performance Viton O-ring seal to prevent oil or gas bypass up to critical differential pressures.
• Hazardous Location Certification: Pre-approved with CSA, ATEX, and IECEx ratings for installation in explosive atmospheres.

Applications

The Bently Nevada 330101-00-46-10-02-05 proximity probe is widely used for industrial rotating machinery protection in power generation, oil and gas, and chemical processing facilities. Typical applications include:

• Steam turbine and gas turbine shaft vibration and axial position monitoring.
• Radial dynamic vibration and axial thrust displacement measurements in high-speed compressors and pumps.
• Rotor and bearing clearance measurements in electric motors and generators.
• Keyphasor and speed reference measurements on machinery shafts.

Ordering Information

Technical Specifications

Installation Guidelines

For correct performance and to prevent mechanical damage, observe these guidelines during installation of the 330101-00-46-10-02-05 proximity probe:

• Probe Gapping: Mount the probe with the appropriate mechanical clearance (typically gapped around 1.27 mm or 50 mils, representing the mid-point of the linear range) as specified by the system calibration.
• Cable Routing: Ensure coaxial cable paths avoid sharp bends (maintain minimum bend radius constraints) and are protected from mechanical pinching or high-temperature surfaces.
• Shielding and Grounding: Maintain proper shielding throughout the extension cable connection up to the Proximitor sensor. Connect the shield at the monitor rack ground only to avoid ground loops.
• Thread Protection: Use appropriate thread sealants or anti-seize compounds if necessary, and do not exceed the maximum torque specification of 11.2 N-m (100 in-lb) when tightening the locknuts.

Compliance and Certifications

The Bently Nevada 330101 proximity probe series complies with international standards for hazardous areas when installed per certified control drawings:

• ATEX/IECEx: Certified for explosive gas atmospheres (Ex ia IIC T5...T1 Ga) and dust environments (Ex ia IIIC T90degC...T280degC Dc) when connected to a compatible safety barrier.
• CSA: North American approval for Class I, Division 1, Groups A, B, C, D and Class I, Zone 0, Ex ia IIC.