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Configured for high-frequency signal conditioning in vibration monitoring platforms, the Bently Nevada 330180-91-00 (330180 Proximitor Sensor) provides direct physical signal translation for non-contacting proximity probes.

Hardware Specifications

Parameter Specification
Model 330180-91-00
Brand Bently Nevada
Origin USA
Weight 0.23 kg
Dimensions Standard 3300 XL enclosure geometry
Operating Temp -51 deg C to +100 deg C
Power Consumption 12 mA maximum
Housing Material A308 aluminum

Eddy-Current Probe Scaling and Rotor Dynamics

The 330180-91-00 functions as an oscillator/demodulator, providing a linear output scaled at 7.87 mV/µm (200 mV/mil) relative to probe displacement. For precise rotor dynamics analysis, the sensor output must be verified via gap voltage validation at the terminal strip, targeting -10 VDC when the probe is positioned at the linear range midpoint. To maintain signal integrity, cross-talk suppression is achieved by observing minimum spacing requirements between adjacent probes, which prevents mutual RF interference. The integrated circuitry ensures a stable carrier signal essential for detecting sub-synchronous vibrations and shaft centerline deviations in rotating machinery.

Frequently Asked Questions

Q: Is the 330180-91-00 compatible with older 3300-series 8 mm probes?

A: Yes. The Proximitor Sensor is designed to accept 3300-series 5 mm, 3300 8 mm, and 3300 XL 8 mm proximity probes and their associated extension cables.

Q: Can this unit be mounted directly onto a DIN-rail?

A: Yes. The suffix 91 indicates a DIN mount configuration, allowing for secure attachment to standard industrial DIN-rail systems.

Field Installation Guidelines

  1. Secure the Proximitor to the DIN-rail, ensuring the mechanical interface is rigid to prevent vibration-induced signal noise.
  2. Connect the probe and extension cable, ensuring the coaxial connectors are hand-tightened until firm. Avoid over-tightening as this may damage the internal dielectric or connector threads.
  3. Route signal cabling through separate conduits from AC power or motor drive cabling to maintain the integrity of the high-frequency carrier signal.
  4. Verify the system common connection to ensure proper grounding of the signal shield.
  5. Perform a system startup check by measuring the output voltage at the monitor terminal block to confirm it matches the predicted gap voltage of -10 VDC for the installed probe depth.

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