Bently Nevada 79482-01 Dual Thrust Position Monitor

Product Overview

The Bently Nevada 79482-01 is a dual-channel thrust position monitor for the 3300 Series. It provides early detection of thrust bearing failure by continuously measuring two independent shaft axial positions. Using proximity probe gap voltage, it monitors movement relative to axial clearances, ensuring the safety of turbines and compressors in critical industrial applications.

Technical Specifications

• Part Number: 79482-01

• Product Type: Dual Thrust Position Monitor (3300/20)

• Transducer Power Supply: 24 Vdc

• Input Signal Range: +10.0 V to -24.0 V

• Frequency Response: 0 to 10 kHz

• Output Impedance: 100 Ohm (Voltage outputs)

• Minimum Target Size: 15.2 mm (0.6 in)

• Dimensions: 5.7 cm x 20.3 cm x 33.0 cm

• Operating Temperature: 0°C to +65°C

• Weight: 2.8 kg

• Country of Origin: United States

Key Features and Engineering Advantages

• Redundant Thrust Protection: Provides two independent channels for axial position monitoring. This redundancy is vital for "voting" logic (e.g., 2-out-of-2), preventing a single sensor failure from causing a false machine trip.

• Early Bearing Failure Detection: By observing the thrust collar directly, the module detects minute axial shifts caused by bearing babbitt wear long before catastrophic mechanical contact occurs.

• High-Precision Gap Monitoring: Utilizes proximity probe gap voltage to provide accurate, non-contacting displacement data, even in high-speed rotating environments.

• Industry-Standard Reliability: As part of the 3300/20 family, it is designed to meet rigorous safety standards, offering deterministic performance for Emergency Shutdown (ESD) systems.

• Optimized Signal Conditioning: Features low output resistance (50 Ohm) and precise impedance matching, ensuring stable signal transmission to remote DCS or PLC systems.