330130-00-05-10-02-CN 3300 XL 8 mm Proximity Probes | Bently Nevada

The Bently Nevada 330130-00-05-10-02-CN operates as a dedicated hardware component for non-contacting displacement and vibration measurement within 3500 Machinery Protection System platforms. It translates the physical gap distance between the probe tip and the target rotating shaft into a high-frequency eddy-current signal for proximity transmitter evaluation.

Suffix Breakdown & Model Matrix

The complete model nomenclature breakdown for this configuration is defined as follows:

• 330130: Base model number for 3300 XL 8 mm Proximity Probe (M10 x 1 metric thread parameters).

• 00: Unthreaded length option designating 0 mm.

• 05: Overall case length option designating 50 mm.

• 10: Total Length Option designating a 1.0 metre (3.3 feet) integrated cable length.

• 02: Connector and Cable Type Option specifying a miniature coaxial ClickLoc connector, standard cable.

• CN: Agency Approval Option designating country-specific regulatory compliance certificates requiring local intrinsic safety verification.

Hardware Specifications

Gap Voltage Validation and Eddy-Current Scaling

Mechanical deployment of this metric threaded probe assembly relies on physical gap voltage validation to ensure accurate data capture of rotor dynamics. During static adjustment inside the mounting bracket, the probe position must be manipulated relative to the shaft target until a steady-state value of -10 VDC is obtained at the Proximitor sensor output layer. This voltage calibration maps the physical target position to the absolute center of the linear transduction range. Maintaining this calibrated gap ensures the conversion complies with the factory eddy-current probe scaling factor of 7.87 V/mm, while integrated coaxial shielding provides cross-talk suppression against adjacent multi-channel transducer tracks within the machinery case.

Frequently Asked Questions

Q: How does the country-specific CN suffix modify the physical installation parameters?

A: The CN option indicates specialized regional certifications (such as NEPSI). Electrical field installation must adhere strictly to the entity parameters outlined in the corresponding localized Field Notification Letter to ensure compliance with hazardous location boundaries.

Q: What output fault behavior occurs if the miniature ClickLoc connector disconnects while the monitoring loop is live?

A: An unlatched connector causes an immediate open-circuit state across the proximity circuit loop. The Proximitor sensor detects this anomaly, drives its voltage output to maximum saturation, and forces the associated monitor card to trigger a NOT OK fault status to suppress false trip execution.

Field Installation Guidelines

• Thread Insertion Alignment: Manually thread the M10 x 1 probe housing into the mounting bracket or port. Ensure no cross-threading occurs before torque is applied to the locknut assembly to prevent damage to the 50 mm stainless steel case.

• Cable Bend Path Limitations: Maintain a minimum bend radius of 25.4 mm (1.0 inch) along all segments of the 1.0-meter coaxial cable. Sharp kinks or compressed routing paths degrade insulation layers and compromise shielding performance.

• Shielding Separation Requirements: The ClickLoc connector and internal coaxial shield must remain isolated from any contact with the machine chassis or housing. Use insulated junction boxes and matching protective terminal sleeves to maintain a single-point grounding layout at the monitor rack.

• Target Surface Inspection: Confirm the targeted shaft observation track is free of surface scratches, chrome plating variances, or structural magnetism, as these conditions cause electrical runout errors that distort vibration readings.