3500/42-04-02 Proximitor Monitor - Bently Nevada

Bently Nevada 3500/42 Proximitor Seismic Monitor Overview

• Brand & Model: This monitor is the Bently Nevada 3500/42 Proximitor Seismic Monitor, with product number 3500/42-04-02.
• I/O Type: The 04 option denotes an I/O module with internal barriers and internal terminations.
• Transducer Support: It accepts Prox/Accel transducers on channels 1 through 4 for flexible monitoring.
• Hazardous Area Approval: Option 02 provides ATEX, IECEx, and CSA Class 1 Zone 2 certification.
• Input Channels: This module handles signals from 1 to 4 proximity, velocity, or acceleration transducers.
• Power Consumption: The monitor typically consumes 7.7 watts during normal operation.

Input Specifications and Sensitivity

• Input Impedance: Standard I/O provides 10 kΩ for Proximitor and acceleration inputs.
• Radial Vibration Sensitivity: You can set this at 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
• Thrust Sensitivity: The 3500/42-04-02 offers 3.94 mV/μm or 7.87 mV/μm options.
• Eccentricity Sensitivity: Choose 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
• Differential Expansion: Sensitivity is 0.394 mV/μm (10 mV/mil) or 0.787 mV/μm (20 mV/mil).
• REBAM Sensitivity: This monitor provides 40 mV/μm (1000 mV/mil) or 80 mV/μm (2000 mV/mil).
• Acceleration Sensitivity: It delivers 10 mV per (m/s²) which equals 100 mV per g.
• Velocity Sensitivity: Options include 20 mV/(mm/s) pk, 5.8 mV/(mm/s) pk, or 4 mV/(mm/s) pk.
• Shaft Absolute Sensitivity: Radial vibration, direct, and velocity options match the above ranges.

Output Features and Indicators

• OK LED: This green LED confirms the 3500/42 monitor is operating correctly.
• TX/RX LED: This LED shows active communication with other modules in the 3500 rack.
• Bypass LED: This indicator lights when the monitor is in Bypass Mode.
• Buffered Outputs: Each channel has a front coaxial connector, and each connector is short-circuit protected.
• Output Impedance: The buffered outputs have an impedance of 550 Ω.
• Transducer Power: The monitor supplies -24 Vdc to power connected transducers.
• Recorder Outputs: It provides +4 to +20 mA signals proportional to full-scale values per channel.
• Voltage Compliance: The current output ranges from 0 to +12 Vdc across a 0 to 600 Ω load.
• Resolution: The recorder output offers 0.3662 µA per bit with ±0.25% accuracy at room temperature.
• Update Rate: The output updates approximately every 100 ms or less.

Measurement Accuracy and Frequency Response

• Radial Vibration Accuracy: Direct and gap measurements are within ±0.33% of full-scale typical.
• 1X and 2X Accuracy: These vector filters maintain within ±0.33% of full-scale typical.
• Smax Accuracy: This measurement is within ±5% maximum for reliable peak detection.
• Not 1X Accuracy: This is ±3% for speeds under 30,000 cpm and ±8.5% for speeds above.
• Thrust Accuracy: The 3500/42-04-02 achieves within ±0.33% of full-scale typical.
• Eccentricity Accuracy: This is within ±0.33% of full-scale typical, same as thrust.
• Acceleration Accuracy: It stays within ±0.33% of full-scale typical, exclusive of filters.
• Velocity Accuracy: This is within ±0.33% of full-scale typical, with barrier derating noted.
• Velomitor Sensor Accuracy: Full scale 0-0.5 is ±3%, 0-1.0 is ±2%, and 0-2.0 is ±1% typical.

Environmental and Physical Specifications

• Dimensions: The monitor measures 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in).
• Weight: The unit weighs 0.91 kg (2.0 lb.) for straightforward handling and installation.
• Operating Temperature: The 3500/42-04-02 operates reliably from -20°C to 65°C.
• Storage Temperature: You can store this module between -40°C and 85°C safely.
• Humidity: It supports up to 95% humidity, non-condensing, for harsh environments.

Frequently Asked Questions (FAQ)

• Q: What transducer types does the 3500/42-04-02 support?
  A: The 3500/42-04-02 supports Proximitor, acceleration, and velocity transducers on all 4 channels.
• Q: What hazardous area approvals does this model have?
  A: The 02 option provides ATEX, IECEx, and CSA Class 1 Zone 2 certification.
• Q: How many channels does this monitor provide?
  A: It accepts signals from 1 to 4 transducers with internal barriers for each channel.
• Q: What is the accuracy of the vibration measurements?
  A: Typical accuracy is within ±0.33% of full-scale, with ±1% maximum for most parameters.
• Q: Is this item new and original?
  A: Yes, we offer this 3500/42-04-02 as a brand new, original module in factory packaging.
• Q: Does this monitor support hot-swapping?
  A: No, you must power down the 3500 rack before installing or removing the 3500/42 monitor.
• Q: Do you have this item in stock?
  A: Yes, we maintain inventory of the 3500/42-04-02 and can ship it within 5 days.

© 2026 NexAuto Technology Limited. All rights reserved.
Original Source: https://www.nex-auto.com/
Contact: sales@nex-auto.com
Phone: +86 153 9242 9628