330876-01-90-00-00 3300 XL 50 mm Proximity Probe

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330876-01-90-00-00
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 330876-01-90-00-00 3300 XL 50 mm Proximity Probe is a precision industrial transducer engineered for high-accuracy, non-contact vibration and differential expansion monitoring in large rotating machinery, including steam turbines and generators. Featuring a 50 mm diameter probe tip, this 3300 XL Proximitor Sensor achieves an impressive linear range of 27.9 mm (1100 mils), the longest in our eddy current transducer line. Designed with robust AISI 304 stainless steel casing, PPS probe tip material, and high-temperature FluidLoc* armored cable, the system operates continuously in extreme conditions from -35°C to +200°C (-31°F to +392°F) and short-term temperatures up to 250°C (+482°F). The 3300 XL 50 mm probe includes front and rear seals, high-temperature ClickLoc connectors, and connector protectors to prevent moisture or contamination ingress, ensuring long-term stability in harsh steam turbine environments. Compatible with existing 7200 50 mm systems, this transducer enables seamless upgrades without altering monitoring system configurations. Its durable design, extended linear range, and high shielding integrity make the 3300 XL 50 mm probe ideal for critical automation measurements in high-value industrial applications.

Applications

Differential Expansion Monitoring
The 3300 XL 50 mm probe accurately measures rotor-stator differential expansion (DE) in large steam turbines. With a linear range of 27.9 mm, it supports complementary or same-side transducer mounting for total measurement ranges from 28 mm to 56 mm, enabling precise thermal growth monitoring of turbine generators.

Rotor Axial Movement Detection
Optimized for detecting axial movement of large rotors, this probe ensures reliable monitoring of turbine or generator shafts, withstanding temperatures up to 200°C (392°F) continuously and transient spikes up to 250°C (482°F), critical for predictive maintenance programs.

High-Temperature Industrial Applications
The probe’s PPS tip and high-temperature FluidLoc* armored cable enable continuous operation in harsh steam and high-temperature environments, maintaining ±1% linearity and signal stability for reliable automation system integration.

Proximitor Sensor Integration
Compatible with 3300 XL Proximitor Sensors, the system delivers 0.394 V/mm (10 mV/mil) output identical to legacy 7200 and 50 mm DE Integral systems, allowing seamless retrofits without reconfiguring monitoring systems or changing software parameters.

Flexible Mounting Solutions
Available in straight and side-exit case configurations with ½-20 or M14x1.5 threads, the 50 mm probe can be installed using standard 7200 brackets or integral DE sliding mount bases, providing flexible mechanical integration for diverse turbine designs.

Specifications

Competitive Advantage

Longest Linear Range
With 27.9 mm (1100 mils) maximum linear range, the 3300 XL 50 mm probe surpasses standard 8 mm and 11 mm probes, allowing accurate measurement of large differential expansion targets and minimizing transducer saturation risk.

Extreme Temperature Endurance
Operating from -35°C to +200°C (-31°F to +392°F) and tolerating short-term exposure to +250°C (+482°F), the probe withstands harsh steam turbine conditions without compromising measurement accuracy.

Robust Mechanical and Environmental Design
AISI 304 stainless steel case, PPS tip, high-temperature FluidLoc* cable armor, front and rear seals, and connector protectors ensure long-term reliability in industrial environments with dust, moisture, or vibration.

Seamless Legacy System Upgrade
The probe maintains compatibility with 7200 50 mm transducers and 50 mm DE Integral systems, allowing users to upgrade to 3300 XL technology without modifying monitor configurations, software, or wiring standards.

High Signal Integrity and EMI/RFI Resistance
Advanced shielding, high-temperature ClickLoc connectors, and EMI/RFI resistant Proximitor Sensor output ensure consistent 0.394 V/mm (10 mV/mil) signals, reducing noise and maintaining high-quality automation data.