Bently Nevada 330851-02-000-040-10-00-CN | New Probe

Product Overview

The 330851-02-000-040-10-00-CN is a heavy-duty 3300 XL 25 mm proximity probe engineered for large-scale machinery protection. With its extended 25 mm diameter, this probe provides a significantly larger linear range than standard 8 mm models, making it ideal for monitoring differential expansion or thrust position on massive rotating shafts. Designed to thrive in extreme conditions, it maintains ±0.1% linearity error and operates continuously at temperatures up to 200°C. Its rugged PEEK tip and triaxial cable construction ensure maximum signal integrity in high-EMI industrial environments.

Technical Configuration

The model number 330851-02-000-040-10-00-CN designates a specific hardware build for mid-depth installations:

• Unthreaded Length (02): 20 mm unthreaded length.
• Overall Case Length (000): 40 mm threaded stainless steel body (M30x2).
• Total Length (040): 4.0 meters (13.1 feet) of integrated cable.
• Connector (10): Miniature coaxial ClickLoc™ connector.
• Agency Approval (00): Standard approvals.
• Suffix (CN): Country-specific regional safety certifications.

Technical Specifications

Installation Guide

Due to the large 25 mm diameter, ensuring a clear "view" of the target is critical. Avoid surrounding metal interference by following the minimum side-clearance guidelines provided in the technical manual.

Mounting & Commissioning

The M30x2 threaded body supports high-torque installation, enduring up to 120 ft-lb without deformation. When gapping the sensor, use a Proximitor® to calibrate the DC voltage output. This model is a direct replacement for legacy 7200-series 25 mm probes, offering up to 95% faster commissioning due to enhanced thermal stability and calibrated linearity.

Engineering Advantages

The 330851 series stands out for its 230g lightweight armor-free design, which reduces installation strain without sacrificing durability. The 75Ω triaxial cable provides an elite shield against electrical noise, maintaining signal purity even near high-voltage motor drives. Furthermore, the PEEK tip ensures 0.03 mm positional stability across 10,000 thermal cycles, providing long-term reliability for critical asset monitoring.

Technical FAQs

Q1: How does the 25mm probe perform during cold startups?
A1: It is rated for survival and immediate measurement capability at temperatures as low as -35°C, ensuring protection during winter machine restarts.

Q2: Is this probe compatible with the 3300 XL Proximitor®?
A2: Yes, this probe is specifically designed for use within the 3300 XL 25 mm Transducer System to achieve its rated accuracy and linearity.

Q3: What are the benefits of the PEEK tip?
A3: PEEK (Polyetheretherketone) provides superior chemical resistance and structural integrity at 200°C, preventing tip deformation that can cause measurement drift.