Bently Nevada 330103-08-13-10-02-CN Reverse Mount Proximity Probe

Technical Overview

• Primary Function: The Bently Nevada 330103-08-13-10-02-CN is a high-precision eddy current sensor designed for internal machinery mounting where external access is restricted.

• Problem Solved: As a specialized Reverse Mount variant of the 3300 XL 8mm series, it addresses the challenge of monitoring shaft vibration and axial thrust in confined bearing housings by allowing the probe to be secured from the inside.

• System Reliability: By providing a non-contacting interface, it ensures continuous, high-fidelity data for machinery protection systems, effectively preventing catastrophic failures in high-speed rotating equipment.

Detailed Technical Specifications

The configuration of the 330103-08-13-10-02-CN is defined by its specific mechanical profile and hazardous area certifications:

• Model Number: 330103-08-13-10-02-CN

• Mounting Thread: 3/8-24 UNF-2A (Reverse Mount)

• Unthreaded Length: 0.8 inches (approx. 20.3 mm)

• Overall Case Length: 1.3 inches (approx. 33.0 mm)

• Total Cable Length: 1.0 Meter (3.3 Feet)

• Connector Type: Gold-plated miniature coaxial ClickLoc™ connector

• Agency Approval: CN Suffix (NEPSI China Certified and global hazardous area ratings)

• Material Composition: Polyphenylene Sulfide (PPS) Tip and AISI 303/304 Stainless Steel Case

• Linear Range: 2.0 mm (80 mils)

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

• Operating Temperature: -51 °C to +177 °C (-60 °F to +350 °F)

Key Engineering Features

• Internal Installation Architecture: The reverse-mount design is specifically optimized for installation within bearing casings, where the cable exits through the rear of the mounting assembly to protect the signal path from external mechanical stress.

• ClickLoc™ Interlock Technology: Features a gold-plated coaxial connector with a positive locking mechanism. This prevents signal intermittentcy or physical disconnection caused by high-frequency machinery resonance.

• Superior Environmental Sealing: The PPS tip and stainless steel housing are chemically bonded to maintain a liquid-tight seal up to 50 psi, preventing the migration of synthetic lubricants into the sensor or conduit.

• NEPSI (CN) Compliance: The CN designation ensures the module meets strict NEPSI certification requirements for explosive atmospheres, making it the standard choice for regulated industrial projects in the Chinese market.

• High-Fidelity Signal Stability: Engineered to minimize thermal drift, this probe maintains a consistent 200 mV/mil scale factor even across extreme temperature fluctuations common in turbomachinery casings.