3500/40M

3500/40M Proximitor Monitor

The 3500/40M Proximitor Monitor is a four-channel device that interfaces with Bently Nevada proximity transducers. It conditions signals for vibration and position measurements and compares them with user-configurable alarms. Through 3500 Rack Configuration Software, each channel can be programmed to perform various functions such as:

• Radial vibration
• Eccentricity
• REBAM
• Thrust position
• Differential expansion

The primary function of the 3500/40M Proximitor Monitor is to provide continuous machinery protection by comparing monitored parameters against user-defined alarm setpoints. This allows for early detection of issues and ensures safe machine operation. Additionally, it offers valuable machine information for both operational and maintenance personnel.

Key Features

• Machinery Protection: Continuously compares monitored parameters to alarm setpoints.
• Versatile Measurements: Can measure radial vibration, eccentricity, thrust position, differential expansion, and REBAM.
• Configurable Setpoints: Alerts and danger setpoints can be configured for each active static value.
• Signal Conditioning: Conditions input signals to generate relevant machine parameters for monitoring.

Specifications

Inputs

• Signal Inputs: Accepts from 1 to 4 proximity transducer signals.
• Input Impedance: 10 kΩ (Standard I/O for proximitor and acceleration inputs).

Sensitivity

• Radial Vibration: 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
• Thrust: 3.94 mV/μm (100 mV/mil) or 7.87 mV/μm (200 mV/mil).
• 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).

Outputs

• Front Panel LEDs:
  • OK LED: Indicates proper operation.
  • TX/RX LED: Indicates communication with other 3500 rack modules.
  • Bypass LED: Indicates Bypass Mode.
• Buffered Transducer Outputs:
  • Each monitor has a coaxial connector for each channel.
  • Short-circuit protected.
  • Output Impedance: 550 Ω.
• Transducer Power Supply: -24 Vdc.

Signal Conditioning

• Frequency Response (Radial Vibration):
  • Direct filter: User-programmable single-pole from 4 Hz to 4000 Hz or 1 Hz to 600 Hz.
  • Gap filter: -3 dB at 0.09 Hz.
  • 1X Filter: Not used.
  • Constant Q Notch Filter: Minimum rejection in the stopband of -34.9 dB.
  • 1X and 2X Vector Filter: Constant Q Filter with a stopband rejection of -57.7 dB.

Power Consumption

• Typical: 7.7 Watts.

Learn More

Click here to view the full datasheet