330878-91-00 3300 XL 50 mm Proximitor Sensor

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330878-91-00
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330878-91-00 3300 XL 50 mm Proximitor Sensor is a high-precision eddy current transducer designed for automated monitoring of large rotating machinery. When paired with a 3300 XL 50 mm Proximity Probe and extension cable, the 330878-91-00 3300 XL 50 mm Proximitor Sensor provides a maximum linear range of 27.9 mm (1100 mils), enabling precise differential expansion (DE) and rotor expansion (RX) measurements. Its A380 aluminum construction, 50 Ω output resistance, and field wiring compatibility of 0.2 to 1.5 mm² (16–24 AWG) ensure reliable operation from -51°C to +100°C (-60°F to +212°F). The 330878-91-00 3300 XL 50 mm Proximitor Sensor is ideal for automation systems that require long-range, high-accuracy displacement sensing in harsh environments.

Applications

Differential Expansion Measurement on Steam Turbines
The 330878-91-00 3300 XL 50 mm Proximitor Sensor monitors differential growth between turbine rotors and casings. Its 27.9 mm linear range allows two complementary 330878-91-00 3300 XL 50 mm Proximity Probes to observe opposite sides of a DE collar, doubling the measurable range for precise rotor expansion analysis in automated turbine monitoring.

Rotor Expansion and Thermal Growth Monitoring
The 330878-91-00 3300 XL 50 mm Proximitor Sensor measures rotor expansion during startup and load changes. High-temperature FluidLoc cables and ClickLoc connectors maintain measurement integrity in environments up to 250°C (482°F), ensuring automated systems detect rotor growth accurately.

Keyphasor and Speed Signal Generation
Paired with a 3300 XL 50 mm Proximity Probe, the 330878-91-00 3300 XL 50 mm Proximitor Sensor provides precise Keyphasor signals for tachometer and speed monitoring in automated machinery, supporting predictive maintenance and process control.

Specifications

Competitive Advantage

Extended Linear Range
The 330878-91-00 3300 XL 50 mm Proximitor Sensor delivers the longest linear range in the 3300 XL series at 27.9 mm, enabling DE and RX measurements that cannot be captured by standard 8 mm or 11 mm systems.

Robust Construction for Harsh Environments
With A380 aluminum housing, sealed probe tips, and high-temperature FluidLoc cables, the 330878-91-00 3300 XL 50 mm Proximitor Sensor operates reliably in extreme steam turbine conditions while maintaining precise measurements.

Seamless System Upgrade and Compatibility
The 330878-91-00 3300 XL 50 mm Proximitor Sensor outputs 0.394 V/mm, compatible with legacy 7200 series systems. This ensures a direct upgrade path without reconfiguring monitoring systems, making it ideal for automation system modernization.

Flexible Installation and Wiring
DIN or panel mounting, SpringLoc terminal strips, and ClickLoc connectors simplify installation. The 330878-91-00 3300 XL 50 mm Proximitor Sensor supports field wiring from 0.2 to 1.5 mm², enabling robust and reliable automated machinery integration.