Bently Nevada 330172-00-20-90-01-05 3300 5mm Proximity Probe

Description

The Bently Nevada 330172-00-20-90-01-05, also cataloged as the 330172 3300 5 mm Proximity Probe, is engineered for non-contact measurement of shaft vibration and displacement in rotating machinery. It operates with eddy-current technology and is factory-matched to a 3300 Proximitor Sensor and extension cable for precise signal scaling.

Hardware Specifications

• Part Number: 330172-00-20-90-01-05
• Manufacturer: Bently Nevada (GE Energy)
• Series: 3300
• Product Type: 5 mm Proximity Probe
• Probe Tip Diameter: 5 mm
• Cable Length: Defined by suffix code (20 = 2.0 m)
• Connector Type: Right-angle connector (90)
• Thread Size: M8 x 1.0 (typical for 5 mm probes)
• Operating Temperature Range: -30 to 65 deg C
• Maximum Lead Resistance: 15 Ω
• Gap Voltage Validation: -10 VDC nominal target voltage
• Country of Origin: United States

Rotor Dynamics and Cross-Talk Suppression

The 3300 5 mm probe is optimized for rotor dynamics monitoring in compact machinery where reduced probe tip size is required. Eddy-current scaling ensures accurate displacement conversion, while cross-talk suppression minimizes interference between adjacent probes. Gap voltage validation at -10 VDC provides consistent calibration across installations, supporting long-term stability in turbines, compressors, and high-speed rotating equipment.

Frequently Asked Questions (FAQ)

Q: Can the 330172 probe be installed in tight clearance areas? A: Yes. The 5 mm probe tip is designed for small-target applications and restricted installation spaces.

Q: What is the nominal calibration voltage? A: The probe is calibrated to a -10 VDC gap voltage target.

Q: How does cable length affect probe performance? A: Cable length is factory-matched with the Proximitor Sensor; mismatched lengths can cause scaling errors and signal distortion.

Field Installation Guidelines

• Engage probe threads with a minimum of 5 turns for secure mounting.
• Route extension cables away from high-voltage conductors to reduce induced noise.
• Ground shielding at the Proximitor Sensor end only.
• Align probe tip perpendicular to the shaft surface for accurate displacement measurement.
• Maintain spacing between probes to prevent cross-talk interference.