Bently Nevada 330876-03-50-00-00 is a 50mm large-range eddy current proximity probe from the 3300 XL series, designed for rotor expansion and differential expansion measurement on steam turbine generators, compatible with 3500 TSI monitoring rack.

Product Overview

Bently Nevada 330876-03-50-00-00 belongs to the 3300 XL 50mm proximity transducer family. It adopts eddy current sensing principle for non-contact measurement of rotor expansion and differential expansion of large turbine generator sets. The model code 03 represents smooth side-exit probe housing, 50 stands for 5-meter cable length, and 00-00 means standard cable without armor and no special agency approval. It can be matched with corresponding 330878 Proximitor sensor and extension cable. This probe meets API 670 machinery protection standard, and features interchangeability within the 3300 XL 50mm system without complex matched calibration. It is widely used in power plant steam turbine supervision and is a critical spare part for TSI condition monitoring.

Key Features

• 50mm large linear range, specially for rotor expansion and differential expansion measurement
• Smooth side-exit probe body, convenient for installation in narrow turbine casing space
• 5-meter integrated high-temperature cable, stable performance under high temperature
• 3300 XL series interchangeable design for probe, cable and proximitor
• Excellent temperature stability and anti-vibration performance for turbine hall
• Non-contact eddy current technology, no wear and long service life
• Works perfectly with Bently 3500 rack monitoring modules and System 1 software

• Complies with API 670 standard for rotating machinery protection

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Technical Specifications

• Brand: Bently Nevada (Baker Hughes)
• Model: 330876-03-50-00-00
• Series: 3300 XL 50mm Proximity Probe
• Sensing Principle: Eddy current
• Cable Length: 5 meters
• Probe Style: Smooth case, side exit
• Compatible: 330878 proximitor sensor, 3500 TSI rack system

• Main Measurement: Rotor expansion, differential expansion

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Application

Steam turbine rotor expansion monitoring, generator differential expansion supervision, large rotating machinery TSI protection system, power plant condition monitoring, predictive maintenance for turbine units.