Bently Nevada|3500/42 135489-02| Proximitor Seismic Monitor

Bently Nevada 3500/42M Proximitor Seismic Monitor (135489-02)

Description
The 3500/42M is a 4-channel monitor for machinery protection, accepting inputs from proximity, velocity, or acceleration transducers. It provides vibration and position measurements with programmable alarms.

Features

• Monitors radial vibration, thrust position, eccentricity, REBAM, acceleration, and velocity.
• Supports dual-channel pairing for simultaneous functions.
• Configurable alert/danger setpoints for static values.
• Front-panel LEDs for status, communication, and bypass mode.

Technical Specifications

Inputs

• Signal Types: Proximity, velocity, or acceleration (1–4 channels).
• Power Consumption: 7.7 W typical.
• Input Impedance: 10 kΩ (Proximitor/acceleration).
• Sensitivity:
  • Radial Vibration/Thrust/Eccentricity: 3.94 mV/µm or 7.87 mV/µm.
  • Differential Expansion: 0.394 mV/µm or 0.787 mV/µm.
  • REBAM: 40 mV/µm or 80 mV/µm.
  • Acceleration: 10 mV/(m/s²).
  • Velocity: 20 mV/(mm/s) pk or 5.8 mV/(mm/s) pk.

Outputs

• Buffered Transducer Outputs: Short-circuit protected, 550 Ω impedance.
• Recorder Output: 4–20 mA, ±0.25% accuracy (room temp), 100 ms update rate.
• Front-Panel LEDs: OK, TX/RX, Bypass status indicators.

Signal Conditioning

• Frequency Response:
  • Radial Vibration: 4 Hz–4 kHz (Direct), 0.09 Hz (Gap).
  • Thrust/Differential Expansion: 1.2 Hz (Direct), 0.41 Hz (Gap).
  • Acceleration: 10–30 kHz (unfiltered), 10–20 kHz (with integration).
• Accuracy: ±0.33% typical (±1% max) for most parameters.

Environmental

• Operating Temp: -30°C to +65°C (with external termination).
• Storage Temp: -40°C to +85°C.
• Humidity: 95% non-condensing.

Compliance

• EMC: EN 61000-6-2/4.
• Hazardous Area: ATEX/IECEx II 3G, cNRTLus Class I Division 2.

I/O Module (135489-02)

• Configuration: 2x Prox/Accel + 2x Velomitor channels.
• Supply Parameters: 23.9 V, 45.5 mA, 1.09 W per channel.