330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330851-02-000-050-50-00-05
Minimum Order Quantity:	1
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe is a high-performance eddy current transducer engineered and manufactured by Bently Nevada, a world-leading provider of machinery condition monitoring solutions, specifically designed for ultra-large displacement measurement in critical heavy industrial assets. As a core component of the 3300 XL 25 mm product ecosystem, this proximity probe works in tandem with compatible proximitor sensors and extension cables to form a complete, high-precision measurement loop, delivering an optimized output sensitivity of 0.770 V/mm (20 mV/mil) and an industry-leading linear range that supports accurate tracking of substantial positional shifts in heavy rotating machinery. Manufactured in the USA and supplied as original new factory-sealed equipment, the 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe meets the stringent performance, safety, and durability requirements of sectors including power generation, oil & gas, and heavy manufacturing, where reliable monitoring of large-scale machinery movements is critical to preventing catastrophic failures.

Configured with an M30x2 threaded probe case, an unthreaded length of 0 mm, an overall case length of 50 mm, and a total cable length of 5.0 meters (16.4 feet), this proximity probe features a non-armored standard cable design that balances installation flexibility and mechanical protection for deployment in diverse industrial environments. It holds multiple global agency approvals, eliminating the need for additional certification processes and enabling compliant installation across international markets. Constructed with a rugged A380 aluminum case, the 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe delivers exceptional durability, withstanding peak shock of 49,050 m/s² (5000 g) and operating reliably across an extreme temperature range of -55°C to +105°C.

Applications

The 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe is primarily used for differential expansion (DE) monitoring in mid-size to large-scale steam turbine generators, accurately tracking the differing thermal expansion rates of turbine rotors and stators during startup and load changes to maintain safe axial clearances and prevent internal component contact.

This probe is widely applied in power generation facilities to monitor casing expansion, measuring the absolute growth of turbine housings relative to machine foundations, and providing precise data to verify the free movement of turbine sliding feet and avoid structural stress or misalignment caused by thermal binding.

Equipped with a 5.0-meter cable and a rugged A380 aluminum case, the 330851-02-000-050-50-00-05 3300 XL 25 mm Proximity Probe is suitable for integration into centralized industrial control cabinets, weather-tight enclosures, or instrument shacks near heavy machinery, supporting high-density installations alongside other 3300 XL series monitoring components.

Specifications

Competitive Advantage

1.Superior Linear Measurement Range for Large-Displacement Applications

The probe delivers an industry-leading linear range optimized for ultra-large displacement monitoring, far exceeding the capability of standard 8 mm proximity probes. This allows it to track substantial thermal expansion movements in heavy rotating machinery such as steam turbines without signal saturation, providing a critical data advantage for preventing catastrophic internal rubbing.

2.Exceptional Structural Durability and Environmental Resilience

Constructed with a robust A380 aluminum case, the probe withstands peak shock of 5000 g and peak acceleration of 75 g, offering superior resistance to mechanical vibration and accidental impacts common in industrial settings. Its wide operating temperature range of -55°C to +105°C ensures stable performance from cold startup to full-load operation, reducing maintenance frequency and extending service life.

3.Seamless System Compatibility and Calibration-Free Interchangeability

As a genuine component of Bently Nevada’s 3300 XL product series, the probe supports full interchangeability with matching proximitor sensors and extension cables of the same electrical length. Unlike competitive systems that require lab-calibrated matched sets, this probe enables plug-and-play replacement without manual recalibration, significantly reducing downtime and simplifying spare parts inventory management.