Probes 330851-02-000-050-50-01-00 | Bently Nevada

Product Overview

The Bently Nevada 330851-02-000-050-50-01-00 is a heavy-duty 3300 XL 25 mm proximity probe engineered for large-scale displacement measurements, such as Differential Expansion (DE) in steam turbines. This specific model features a 50mm stainless steel case with an M30x2 threaded interface and integrated SST armor for maximum mechanical durability.

Proudly Made in the U.S.A., this probe is designed for extreme reliability, meeting military-grade shock ratings and high-pressure sealing standards, ensuring your most critical machinery remains protected in the harshest industrial environments.

Technical Configuration

• Model: 330851 (3300 XL 25 mm Proximity Probe)
• Probe Case Type (-02): M30x2 Thread
• Unthreaded Length (-000): 0 mm
• Overall Case Length (-050): 50 mm
• Total Length (-50): 5.0 meters (16.4 feet)
• Armor Option (-01): With Stainless Steel Armor
• Agency Approval (-00): Standard (No specialized hazardous area cert suffix)

Technical Specifications

Structural & Certification Advantages

The 330851-02-000-050-50-01-00 sets a new benchmark for sensor survivability. Its IP69KX rating allows it to thrive in washdown areas or steam-saturated turbine housings. With DNV GL Type Approval (Certificate No. TAA00001C8), it is also a preferred choice for maritime and offshore applications where vibration (IEC 60721-3-4 Class 4M6) and saltwater exposure are constant challenges.

Installation & Precision

This probe offers a precision mounting alignment tolerance of 0.3μradian, allowing for highly repeatable measurement of large-scale shaft displacement. The armored 5.0m triaxial cable is UV-stable (rated for 10,000hr sunlight exposure), making it suitable for both indoor and outdoor installations without the risk of cable jacket degradation.

Technical FAQs

Q1: What is the benefit of the M30x2 thread with 0mm unthreaded length?

A1: This "zero unthreaded clearance" design allows for flush mounting against machinery housings, maximizing the stability of the probe in high-vibration environments.

Q2: Is this probe compatible with standard 3300 XL Proximitors?

A2: Yes, this 25mm probe is part of the 3300 XL family and is designed to work with 3300 XL 25mm Proximitor® Sensors to deliver accurate large-range linear output.

Q3: Can this probe handle H2S environments?

A3: Yes, the materials and sealing are rated for exposure to H2S levels up to 15,000ppm, making it suitable for oil and gas applications.

Download Datasheet: Access PDF Specifications