Bently 3500/42 176449-02GC

Proximitor / Seismic Monitor Module (3500 Series)

Overview

The Bently Nevada 3500/42 (PN 176449-02GC) is a high-performance Proximitor / Seismic Monitor module designed for continuous condition monitoring and protection of rotating machinery. It is part of the widely used 3500 Machinery Protection System, commonly applied in industries such as oil & gas, power generation, and petrochemical plants.

This module provides real-time vibration, displacement, and seismic monitoring, enabling early fault detection and preventing costly equipment failures.

Key Features

• 4-channel monitoring capability
  Simultaneously monitors multiple parameters such as:
  • Shaft vibration
  • Axial displacement
  • Eccentricity
  • Velocity / acceleration
• Multiple sensor input types
  • Eddy current (proximity probes)
  • Velocity sensors
  • Accelerometers
  • Dual sensor inputs
• Advanced signal processing
  • Filtering and integration
  • Differential signal processing
  • Accurate distinction between normal vibration and faults
• Machinery protection functions
  • Configurable alarm and danger setpoints
  • Automatic trip signals for protection systems
• Flexible system integration
  • Works with 3500 rack system
  • Supports Modbus / RS-485 / Ethernet communication (depending on configuration)

Technical Specifications (Typical for 176449-02 Series)

• Power Supply: 24 VDC (via 3500 rack)
• Channels: 4
• Sampling Rate: Up to 10 kHz per channel
• Frequency Response: Up to ~30 kHz
• Operating Temperature: approx. -40°C to +70°C
• Humidity: Up to 95% non-condensing

Functions & Benefits

• Continuous machine condition monitoring
• Early fault detection (imbalance, misalignment, bearing issues)
• Improved plant safety and reliability
• Reduced unplanned downtime
• Supports predictive maintenance strategies

Applications

• Steam and gas turbines
• Compressors
• Pumps
• Generators
• Large rotating equipment

Widely used in:

• Power plants
• Oil & gas facilities
• Chemical processing plants