Bently Nevada 289837-01 Proximitor/Seismic I/O Module

The Bently Nevada 3500/42E Vibration Monitor is a sophisticated four-channel monitor designed to detect and manage vibration and position measurements in machinery, ensuring early identification of potential issues. It integrates with proximity and seismic transducers to condition signals, supporting various user-defined alarm and measurement configurations. Each channel can be configured with the 3500 Rack Configuration Software to perform any of the following measurement functions:

• Radial Vibration
• Thrust Position
• Differential Expansion
• Shaft Absolute
• Eccentricity
• Acceleration
• Velocity

Specifications

Inputs

• Signal Types: Accepts inputs from up to four proximity, velocity, or acceleration transducers.
• Input Impedance: 10 kΩ for Proximitor and Acceleration inputs.
• Power Consumption: 6.8W (typical).

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).
• Acceleration: 10 mV/(m/s²) (100 mV/g).
• Velocity: Multiple ranges available: 20 mV/(mm/s) pk, 5.8 mV/(mm/s) pk, or 4 mV/(mm/s) pk.

Outputs

• Front Panel Indicators:
  • OK LED: Confirms operational status.
  • DANGER LED: Indicates a critical condition triggering the danger alarm.
  • ALERT LED: Indicates a warning condition triggering the alert alarm.
  • Bypass LED: Shows when the unit is in Bypass mode.
• Buffered Transducer Outputs: Each channel has a coaxial connector with 499 Ω output impedance, short-circuit protected.
• Relay Contacts: Drives relays for 3300 SIRM options during 3500 ENCORE Rack Upgrade.
• Recorder Output: +4 to +20 mA, individual for each channel; unaffected by output short circuits.
• Voltage Compliance: 0 to +12 Vdc across 0–600 Ω load resistance.
• Resolution: 0.3662 µA per bit, ±0.25% accuracy at room temperature.

Signal Conditioning (Specified at +25 ºC unless otherwise noted)

• Radial Vibration:
  • Frequency Response: User-programmable direct filter, from -3 dB at 4 Hz to 4000 Hz or 1 Hz to 600 Hz.
  • Gap Filter: -3 dB at 0.09 Hz.
• Thrust and Differential Expansion: Direct filter (-3 dB at 1.2 Hz), Gap filter (-3 dB at 0.41 Hz).
• Eccentricity: Direct filter (-3 dB at 15.6 Hz), Gap filter (-3 dB at 0.41 Hz).
• Accuracy: Typically ±0.33% full-scale, maximum ±1%.

Alarms

• Alert and Danger Setpoints: Adjustable from 0 to 100% of full-scale, accuracy within 0.13% of desired value. Setpoints limited by the transducer range.
• Alarm Time Delays: Programmable in software:
  • Alert: 1 to 60 seconds (1-second increments).
  • Danger: 0.1 seconds to 60 seconds (0.5-second increments).

Environmental Limits

• Operating Temperature: -20°C to +65°C (-4°F to +150°F).
• Storage Temperature: -40°C to +85°C (-40°F to +185°F).
• Humidity: 95% noncondensing.

Compliance and Certifications

• EMC Compliance: Meets European Community EMC Directive 2004/108/EC standards, including EN 61000 and EN 61326.
• Electrical Safety: Compliant with EN 61010-1:2010 and 2006/95/EC Low Voltage Directive.
• Hazardous Area Approvals: North American Class I, Div 2 for Groups A, B, C, and D. Certification applicable only if installed with compatible approvals.

Physical Specifications

• I/O Module (4-channel) Dimensions: 208.28 mm (H) x 48.26 mm (W) x 127 mm (D); Weight: 0.68 kg.

Spares

• 289837-01 Proximitor/Seismic I/O Module

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