Configured for non-contact displacement measurement in industrial rotating machinery, the Bently Nevada 330101-00-19-10-02-00 (330101 Proximity Probe) provides direct physical electrical execution for vibration and axial position monitoring within machinery protection systems.

Suffix Breakdown & Model Matrix

The Bently Nevada 330101 catalog string utilizes a precise matrix to define the transducer configuration:

• 330101: 8 mm Probe without armor.

• 00: Unthreaded length (0.0 mm).

• 19: Overall case length (190 mm).

• 10: Total system length (1.0 meter).

• 02: Connector type (Miniature coaxial connector with protective connector cover).

• 00: Agency approval option (Not required/Standard).

This configuration provides a linear range of 2.0 mm with a standard scale factor of 7.87 V/mm, calibrated for AISI 4140 steel targets.

Hardware Specifications

Mechanical Monitoring and TSI Characteristics

The transducer utilizes the eddy-current principle to monitor the air gap between the probe tip and a metallic target. Reliable rotor dynamics analysis necessitates precise gap voltage validation, with a standard target of -10 VDC center-gap. To maintain signal integrity and suppress cross-talk, probes must be installed with adequate physical separation. Any mechanical runout or surface irregularities on the target shaft will be reflected in the transducer output, which must be accounted for during calibration and vibration analysis.

Ordering info

• 1 x 330101-00-19-10-02-00 Proximity Probe

• 1 x Protective dust cap

• 1 x Technical documentation package

Field Installation Guidelines

• Mounting: Install probes in non-conductive mounting hardware or ensure electrical isolation from the machine case to avoid ground loops.

• Clearance: Adhere strictly to radial and axial clearance requirements to prevent probe tip damage and signal interference.

• Cabling: Utilize only factory-matched extension cables. Do not modify cable lengths, as the system is calibrated as an integrated assembly (probe, cable, and Proximitor).

• Grounding: Bond the probe body to the machine frame at the mounting bracket to minimize high-frequency noise injection into the Proximitor signal path.

Frequently Asked Questions

• Q: Why is the total system length critical?

  A: The 330101 probe system is calibrated as a matched set consisting of the probe, extension cable, and Proximitor sensor. Changing any component length alters system linearity and scale factor.

• Q: What is the recommended gap voltage?

  A: For standard vibration monitoring, the probe should be adjusted to achieve a gap voltage of approximately -10 VDC at the center of its linear range.

• Q: Is this probe compatible with all Bently Nevada Proximitors?

  A: This model is designed for use with the 3300 XL series Proximitor sensors. Ensure the Proximitor is configured for the specific probe type and system length.

• Q: Can I shorten the probe cable?

  A: No. Shortening the cable will invalidate the factory calibration and cause significant errors in the vibration measurement output.

• Q: How do I handle probe cross-talk?

  A: Maintain minimum separation distances between adjacent probes as specified in the installation documentation to prevent mutual interference.

• Q: Is the probe tip durable?

  A: The tip is constructed from high-performance materials designed to resist chemical exposure and thermal cycling in harsh machine environments.

• Q: What should I check if the gap voltage drifts?

  A: Verify that the probe is securely tightened, check the condition of the connectors, and inspect the target surface for any signs of wear or contamination.

• Q: Can this probe be used in hazardous locations?

  A: Yes, provided the installation complies with the specific hazardous area approval ratings (e.g., ATEX, CSA) assigned to this particular model number.