Bently Nevada 330878-50-00 3300 XL 50 mm Proximitor Sensor

The Bently Nevada 330878-50-00 is a high-performance Proximitor sensor from the renowned 3300 XL series. Manufactured by Bently Nevada (a Baker Hughes business), this sensor is an essential component for critical machinery protection systems, designed to monitor vibration and position in industrial rotating equipment .

Key Product Specifications

The model 330878-50-00 features a 5.0 meter (16.4 feet) system length and comes in a panel mount configuration. The "-00" suffix indicates that this unit has no agency approvals, making it a standard option for general-purpose applications . Weighing approximately 0.246 kg, this Proximitor sensor is engineered for reliability in demanding environments .

Advanced Features & Technology

This Proximitor sensor is part of the advanced 3300 XL system, which includes probes and extension cables with patented improvements:

TipLoc Molding: Provides a robust bond between the probe tip and body for enhanced durability .

CableLoc Design: Offers 330 N (75 lbf) pull strength, securely attaching the probe cable to the tip .

ClickLoc Connectors: Corrosion-resistant, gold-plated connectors require only finger-tight torque (audible "click") and need no special tools for installation .

Applications

The 3300 XL 50 mm sensor system is specifically designed for large steam turbine generators. It is ideal for measuring:

Differential Expansion (DE)

Rotor Expansion (RX) 

With a large linear range of 27.9 mm (1100 mils), it effectively measures the growth rate difference between the turbine rotor and the casing .