330850-50-00 3300 XL 25 mm Proximitor Sensor

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330850-50-00
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330850-50-00 3300 XL 25 mm Proximitor Sensor is an eddy-current signal conditioner used in turbine monitoring and machinery protection systems. The 330850-50-00 3300 XL 25 mm Proximitor Sensor accepts one non-contacting 25 mm probe with extension cable and converts shaft displacement into a 0.787 V/mm output across a 12.7 mm measuring range, supporting differential expansion tracking in steam turbine rotors. The 330850-50-00 3300 XL 25 mm Proximitor Sensor operates on −17.5 to −26 Vdc at 12 mA and provides 50 Ω output resistance with supply sensitivity below 2 mV/V. Housed in A380 aluminum with panel-mount installation and 5 m system length, the 330850-50-00 3300 XL 25 mm Proximitor Sensor works from −51°C to +100°C and withstands 100% condensing humidity when connectors are protected, enabling continuous shaft movement measurement in automated plant control and vibration monitoring loops.

Applications

Steam turbine differential expansion measurement
The 330850-50-00 3300 XL 25 mm Proximitor Sensor measures axial growth between rotor and casing. With its 12.7 mm linear range and 0.787 V/mm output, the 330850-50-00 3300 XL 25 mm Proximitor Sensor provides precise differential expansion readings, enabling operators to adjust load or initiate trips before rotor-casing misalignment occurs.

Generator shaft position monitoring in power plants
By transmitting accurate displacement signals over its 50 Ω output, the 330850-50-00 3300 XL 25 mm Proximitor Sensor allows PLCs and DCS systems to track shaft movement. The −17.5 to −26 Vdc power range ensures continuous operation even under supply fluctuations, making the 330850-50-00 3300 XL 25 mm Proximitor Sensor suitable for real-time generator monitoring.

Large compressor rotor movement tracking
The 330850-50-00 3300 XL 25 mm Proximitor Sensor observes rotor collars or ramps, converting mechanical displacement into a measurable voltage. Its A380 aluminum housing and operating temperature range from −51°C to +100°C allow the 330850-50-00 3300 XL 25 mm Proximitor Sensor to function in harsh compressor environments without degradation.

Automated turbine startup sequence verification
Control systems utilize real-time axial measurements from the 330850-50-00 3300 XL 25 mm Proximitor Sensor to verify safe rotor movement. The sensor’s less than 2 mV/V supply sensitivity ensures that startup decisions are based on accurate readings, reinforcing the role of 330850-50-00 3300 XL 25 mm Proximitor Sensor in automation loops.

Specifications

Competitive Advantage

Transmit displacement signal over long cabinet distance
The 50 Ω output of the 330850-50-00 3300 XL 25 mm Proximitor Sensor allows direct wiring from turbine deck to control room panels without signal amplifiers.

Operate in hot turbine enclosures
The 330850-50-00 3300 XL 25 mm Proximitor Sensor works up to +100°C, enabling installation near bearing housings and eliminating remote mounting brackets.

Maintain measurement during DC supply variation
With less than 2 mV/V supply sensitivity, the 330850-50-00 3300 XL 25 mm Proximitor Sensor keeps alarm thresholds usable even when plant −24 Vdc power changes during heavy motor starts.

Support continuous plant operation in humid areas
The sealed A380 aluminum housing of the 330850-50-00 3300 XL 25 mm Proximitor Sensor tolerates condensing moisture, allowing monitoring in turbine halls and cooling-water areas without additional enclosures.