Bently Nevada 3500/42M 176449-02 Proximitor Seismic Monitor

Product Overview

• Manufacturer: Bently Nevada
• Series: 3500/42M
• Model/Part Number: 176449-02 
• Type: Proximitor Seismic Monitor
• Function:
  • The 3500/42M Proximitor Seismic Monitor is a four-channel monitor designed for machinery protection by comparing vibration and position parameters against user-configured alarm setpoints.
  • It accepts input from proximity and seismic transducers, conditions the signals for vibration and position measurements, and communicates essential machine data to operations and maintenance personnel.

Specifications

Inputs

• Signal: Supports 1–4 transducer signals (proximity, velocity, or acceleration).
• Power Consumption: 7.7 Watts (typical).
• Input Impedance: 10 kΩ for standard I/O (Proximitor and acceleration inputs).

Sensitivity

• Radial Vibration, Thrust, Eccentricity:
  • 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
• Differential Expansion:
  • 0.394 mV/μm (10 mV/mil) or 0.787 mV/μm (20 mV/mil).
• REBAM:
  • 40 mV/μm (1000 mV/mil) or 80 mV/μm (2000 mV/mil).
• Acceleration:
  • 10 mV/(m/s²) (100 mV/g).
• Velocity:
  • Options include 20 mV/(mm/s) pk, 5.8 mV/(mm/s) pk, or 4 mV/(mm/s) pk.

Outputs

• Front Panel LEDs:

  • OK LED: Illuminates when the monitor operates properly.
  • TX/RX LED: Flashes during communication with other rack modules.
  • Bypass LED: Illuminates when the monitor is in bypass mode.

• Buffered Transducer Outputs:

  • Coaxial connector for each channel.
  • Short-circuit protected.

• Recorder Output:

  • Output Signal: +4 to +20 mA (proportional to monitor full-scale).
  • Voltage Compliance: 0–12 Vdc across load resistance of 0–600 Ω.
  • Resolution: 0.3662 µA per bit with ±0.25% error at room temperature.

• Shaft Absolute Buffered Outputs:

  • One output per channel group.
  • Output Impedance: 300 Ω.

Environmental Limits

• Operating Temperature:
  • Standard Modules: -30°C to +65°C (-22°F to +150°F).
  • Barrier Modules: 0°C to +65°C (32°F to +150°F).
• Storage Temperature: -40°C to +85°C (-40°F to +185°F).
• Humidity: 95% non-condensing.

Physical Dimensions

• Monitor Module (Main Board):

  • Height: 241.3 mm (9.50 in).
  • Width: 24.4 mm (0.96 in).
  • Depth: 241.8 mm (9.52 in).
  • Weight: 0.91 kg (2.0 lbs).

• I/O Modules:

  • Non-barrier I/O:
    • Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in).
    • Weight: 0.20 kg (0.44 lbs).
  • Barrier I/O:
    • Dimensions: 241.3 mm x 24.4 mm x 163.1 mm (9.50 in x 0.96 in x 6.42 in).
    • Weight: 0.46 kg (1.01 lbs).

• Rack Space Requirements:

  • Monitor: 1 full-height front slot.
  • I/O Modules: 1 full-height rear slot.

Ordering Information

The model number format is 3500/42-AA-BB, where:

A: I/O Module Type

B: Hazardous Area Approval Option

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