330850-91-CN 3300 XL 25 mm Proximitor Sensor

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330850-91-CN
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330850-91-CN 3300 XL 25 mm Proximitor Sensor is designed to interface with a single non-contacting 3300 XL 25 mm Proximity Probe and extension cable, providing precise output signals for automated turbine and generator monitoring. With a 9.0 m system length and DIN mount, the 330850-91-CN operates from –51°C to +100°C continuously and stores safely up to +105°C. Constructed from A380 aluminum, it delivers less than 2 mV change in output per volt input variation with a 50 Ω output resistance. Power requirements range from –17.5 Vdc to –26 Vdc without barriers and –23 Vdc to –26 Vdc with barriers. Tested for 100% condensing humidity and IEC 68-2-3 damp heat, the 330850-91-CN enables automated measurement of rotor axial movement, differential expansion, and real-time vibration monitoring in industrial turbines.

Applications

Differential Expansion Measurement on Steam Turbines
The 330850-91-CN 3300 XL 25 mm Proximitor Sensor measures differential expansion (DE) on midsize to large steam turbine generators using its 0.787 V/mm (20 mV/mil) output and 12.7 mm linear range. By observing rotor collars or ramps, it detects axial movement caused by rotor-stator growth differences.

Automated Shaft Gap Verification
Paired with the 330850-91-CN 3300 XL 25 mm Proximity Probe and extension cable, this sensor facilitates precise shaft-collar gap verification in automated monitoring systems. Its DIN-rail mount and 9.0-metre system length allow integration into turbine control panels.

Rotor Alignment Monitoring
Using two complementary 330850-91-CN 3300 XL 25 mm Proximitor Sensors, operators can track rotor ramps or collars for real-time automated alignment checks, minimizing manual inspection and enhancing operational efficiency.

Retrofit Replacement for Legacy Systems
The 330850-91-CN 3300 XL 25 mm Proximitor Sensor directly replaces standard 7200 25 mm and 35 mm DE integral transducer systems without monitor changes, enabling automated upgrades in existing turbine installations.

Specifications

Competitive Advantage

High-Temperature Operation
The 330850-91-CN 3300 XL 25 mm Proximitor Sensor operates in −51°C to +100°C conditions with intermittent tolerance up to +105°C, ensuring continuous automation data collection in extreme turbine environments.

Low Supply Sensitivity
With less than 2 mV change per volt input variation, the 330850-91-CN 3300 XL 25 mm Proximitor Sensor maintains precise voltage output, supporting accurate automated monitoring without signal drift.

Easy Installation and Maintenance
ClickLoc high-temperature connectors, SpringLoc terminal strips, and front/rear probe seals allow fast, contamination-free installation of the 330850-91-CN 3300 XL 25 mm Proximitor Sensor. Optional sliding brackets simplify automated gap adjustments and verification.

Long-Range Measurement
The 12.7 mm linear range of the 330850-91-CN 3300 XL 25 mm Proximitor Sensor enables measurement across various collar and ramp sizes, supporting broader automated inspection without hardware changes.

Automated System Integration
With DIN-rail mount and 50 Ω output resistance, the 330850-91-CN 3300 XL 25 mm Proximitor Sensor integrates seamlessly into turbine monitoring panels, enabling data collection for automated control systems and predictive maintenance.