Bently 330180-50-05 Proximity Probe System Amplifier

Product Overview
The Bently 330180-50-05 is a high-performance (proximitor) designed for use with Bently Nevada’s 3300 XL series eddy current proximity probes. It serves as an intermediate component in vibration and displacement monitoring systems, converting weak sensor signals into standardized electrical outputs for analysis by monitoring equipment. This model is widely used in industrial machinery condition monitoring to detect early-stage mechanical faults and prevent equipment failure.

Category:
Description

Technical Specifications

  • Input Signal Type: High-frequency carrier signal modulated by gap changes from eddy current probes
  • Output Signal: Standardized DC/low-frequency voltage proportional to mechanical vibration/displacement
  • Sensitivity: 7.87 V/mm (200 mV/mil)
  • Linear Range: 2 mm (0.08 inches)
  • Frequency Response: 0–10 kHz
  • Operating Temperature:
    • Proximitor: -35°C to +85°C (-30°F to +185°F)
    • Probe: -51°C to +177°C (-60°F to +350°F)
    • Extension Cable: -51°C to +177°C (-60°F to +350°F)
  • Power Requirements: -17.5 VDC to -26 VDC, 12 mA (without safety barrier)
  • Mounting Options: Panel mount or DIN rail mount with electrical isolation
  • Approvals: Meets API 670 standards for mechanical protection systems; CE certified for RFI/EMI immunity

Functional Characteristics

  • Signal Conditioning: Demodulates high-frequency carrier signals from probes into analyzable low-frequency signals
  • Amplification: Boosts weak sensor signals to levels suitable for long-distance transmission
  • Filtering: Includes built-in circuits to reject out-of-band noise
  • Diagnostics: Supports system self-checks and signal validation
  • Environmental Robustness:
    • High immunity to radio frequency interference (RFI) and electromagnetic interference (EMI)
    • Glass-fiber housing option available for additional RF shielding
  • Compatibility: Designed for use with Bently 3300 XL 8mm, 11mm, 25mm, and 50mm probe systems

Application Scenarios

  • Rotating Machinery Monitoring:
    • Turbines (steam, gas, hydro)
    • Generators and motors
    • Compressors and expanders
    • Pumps and fans
    • Gearboxes and rolling mills
  • Key Measurement Parameters:
    • Radial vibration monitoring
    • Axial displacement/thrust position measurement
    • Keyphasor reference for phase analysis
    • Shaft eccentricity/bend detection during low-speed operation
    • Tachometer and zero-speed measurements
  • Industry Applications:
    • Power generation plants
    • Petroleum refineries and offshore platforms
    • Petrochemical processing facilities
    • Metallurgical and paper manufacturing
    • Marine propulsion systems

System Integration

  • Typical Configuration:
    • Probe → Extension Cable → 330180-50-05 Proximitor → Monitoring System (e.g., Bently 3500)
  • Cable Length Options: Supports system lengths of 5m or 9m (including extension cable)
  • Interchangeability: Probes, extension cables, and proximitors are fully interchangeable without individual calibration when using Bently 3300 XL components

Advantages

  • High Reliability: Proven performance in harsh industrial environments with minimal maintenance requirements
  • Accurate Measurements: Maintains specified sensitivity and linearity across full operating temperature range
  • Easy Installation: Compact design with multiple mounting options and integrated electrical isolation
  • Reduced Downtime: Early fault detection enables predictive maintenance strategies
  • Global Support: Backed by Bently Nevada’s extensive service network and technical expertise
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