Description

The Bently Nevada 330101-00-39-15-02-05, also cataloged as the 330101 Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement and vibration measurement within 3300 XL 8mm Proximity Transducer Systems.

Suffix Breakdown & Model Matrix

The alphanumeric suffixes define the physical, mechanical, and electrical configurations of the hardware:

• 00: Unthreaded Length option designating 0.0 inches of unthreaded case.
• 39: Overall Case Length option designating 3.9 inches of total threaded case.
• 15: Total Length option specifying 1.5 meter (4.9 feet) of integral cable length.
• 02: Miniature coaxial ClickLoc connector, standard cable configuration.
• 05: Multiple Approvals option covering worldwide intrinsic safety and non-incendive regulatory standards (including CSA, ATEX, and IECEx).

Hardware Specifications

Eddy-Current Probe Scaling & Gap Voltage Validation

The probe executes precise eddy-current scaling to transform physical displacement into proportional voltage. During this process, engineers track the gap voltage to validate a nominal -10 VDC baseline, which establishes the center of the linear calibration range for static and dynamic rotor dynamics monitoring. Additionally, internal shielding layers suppress cross-talk to neutralize electromagnetic interference from adjacent channels.

Frequently Asked Questions

Q: Can field technicians connect this 1.5 meter probe directly to a 5.0 meter extension cable and a 5.0 meter Proximitor sensor?

A: No, because the total system electrical length must match the Proximitor calibration. Consequently, technicians must combine a 1.5 meter probe with a 3.5 meter extension cable to achieve the required 5.0 meter total system electrical length.

Q: What physical damage occurs if an installer over-torques the probe locknut?

A: Over-torquing deforms the cylindrical case. As a result, this deformation compresses the internal coaxial core, alters the target eddy-current impedance profile, and shifts the electrical calibration outside of standard limits.

Field Installation Guidelines

• Mechanical Torquing Limits: Tighten the probe case into the machine housing tap up to a maximum of 13.5 N-m (120 in-lb) of torque, as exceeding this limit strips the threads or deforms the probe tip.
• Thread Engagement: Engage a minimum depth of 5 full threads before locking the probe case into its final position with the locknut.
• Routing Limitations: Maintain a minimum bend radius of 25.4 mm (1.0 inch) on the integral coaxial cable, otherwise you risk causing structural damage to the internal core conductor and shielding layer.
• Grounding Protocol: Connect the outer shield of the extension cable to ground exclusively at the Proximitor Sensor end, while leaving the probe-side connection isolated to prevent ground potential loops.