330851-02-000-030-50-01-00 3300 XL 25 mm Proximity Probe

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330851-02-000-030-50-01-00
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330851-02-000-030-50-01-00 3300 XL 25 mm Proximity Probe is designed for precise differential expansion (DE) measurements on midsize to large steam turbine generators. Featuring a 12.7 mm linear range and 0.787 V/mm output, the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe accurately monitors rotor and stator displacement in automated turbine systems. The probe includes M30x2 threaded stainless steel case, PEEK tip, and SST armored 5.0 m cable to operate in high-temperature environments from -35°C to +200°C, with short-term tolerance up to 250°C. Front and rear seals combined with FluidLoc cable prevent moisture intrusion, maintaining reliable sensor readings. High-temperature ClickLoc connectors allow secure installation in tight spaces, while the 25.4 mm vertical adjustment supports precise positioning. The 330851-02-000-030-50-01-00 3300 XL 25 mm Probe integrates seamlessly with 3300 XL Proximitor Sensors, providing automated monitoring of thrust collar movement, axial expansion, and rotor radial displacement. Optional sliding brackets and dial indicator kits facilitate accurate gap adjustment and verification during installation. This transducer system enables straightforward upgrades from legacy 7200-series DE probes without altering monitor wiring, ensuring continuous automated measurement operations.

Applications

Measure Rotor Differential Expansion in Steam Turbines
The 330851-02-000-030-50-01-00 3300 XL 25 mm Proximity Probe measures axial displacement between turbine rotors and casings. Its 12.7 mm linear range and 0.787 V/mm output allow precise detection of expansion differences during startup and load changes. The 5.0 m SST armored cable ensures long-distance installation without signal degradation.

Monitor Thrust Collar Movement
Install the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe at the thrust bearing collar to detect axial movement. The M30x2 threaded stainless steel case and 25.4 mm vertical adjustment provide secure mounting and accurate alignment for automated monitoring systems.

Track Rotor Radial Displacement
Use the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe with complementary input transducers to measure radial motion on turbine rotors. The PEEK probe tip and FluidLoc cable prevent moisture ingress, maintaining reliable automated readings under high temperatures up to 200°C and intermittent 250°C peaks.

Verify Differential Expansion Installation
Pair the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe with a sliding bracket and dial indicator kit to simulate shaft movement. This enables accurate gap setting and ensures that the probe captures the full DE range.

Specifications

Competitive Advantage

High-Temperature Operation
The 330851-02-000-030-50-01-00 3300 XL 25 mm Probe operates continuously up to 200°C and intermittently to 250°C. SST armored cables and front/rear seals protect the probe in harsh turbine DE environments.

Secure Installation in Tight Spaces
The 25.4 mm vertical adjustment and ClickLoc connectors of the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe allow easy routing and locking of cables in compact automated control panels.

Seamless Upgrade from Legacy Systems
The 330851-02-000-030-50-01-00 3300 XL 25 mm Probe is designed to replace 7200-series 25 mm and 35 mm DE probes without rewiring, simplifying automated system upgrades.

Extended Cable Reach
With a 5.0 m armored SST cable, the 330851-02-000-030-50-01-00 3300 XL 25 mm Probe allows flexible installation in large turbine halls while maintaining signal integrity for automated monitoring.