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Bently Nevada 330101-00-12-10-02-05 3300 XL 8 mm Proximity Probe

Configured for radial vibration and thrust position measurement in Bently Nevada 3300 XL Transducer Systems, the Bently Nevada 330101-00-12-10-02-05 (base model 330101 proximity probe) provides direct eddy-current displacement sensing for rotating machinery shafts. It interfaces physically with matching extension cables and drivers to generate proportional DC voltage outputs tied to target surface position.

Hardware Specifications

Parameter	Specification
Brand	Bently Nevada
Origin	USA
Weight	0.1 kg
Dimensions	1.5 x 1.2 x 113 cm
Operating Temp	-34 to 177 degC
Power Consumption	Passive sensor; powered via driver
Thread Type	3/8-24 UNF
Unthreaded Length	0.0 in
Overall Case Length	1.2 in
Total Length	1.0 m (3.3 ft)
Connector Type	Miniature coaxial ClickLoc connector
Agency Approvals	CSA, ATEX, IECEx

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330101 series probes operate on eddy-current induction principles where probe tip impedance changes linearly with target distance. Scaling is fixed at 7.87 mV/μm (200 mV/mil) over the linear range. Gap voltage validation targets -10 VDC when measuring against a steel target at mid-range. Cross-talk suppression is achieved through phase-matched cable pairing and precise shield termination practices per Bently Nevada installation manuals.

Frequently Asked Questions

Q: Can this probe be used without armor in high-vibration environments?

A: Yes, but routing must avoid sharp bends and mechanical impact zones to prevent cable fatigue failure.

Q: Is hot-swapping supported between probe and driver electronics?

A: No. System power must be removed before disconnecting or connecting probes to prevent transient damage.

Q: What is the minimum bending radius for the standard cable?

A: Maintain a bend radius no less than 25 mm to preserve signal integrity.

Field Installation Guidelines

Mount the probe using the 3/8-24 UNF threads into a rigid bracket. Ensure at least five full threads engagement for vibration resistance. Terminate the shield at the driver end only to maintain single-point grounding and reduce EMI pickup. Verify gap voltage before final system commissioning using a calibrated driver interface. Avoid routing probe cables parallel to high-power AC conductors.

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