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Bently Nevada 330101-00-12-15-02-05 3300 XL 8 mm Proximity Probe

Configured for shaft vibration measurement in Bently Nevada 3300 XL series machinery protection systems, the Bently Nevada 330101-00-12-15-02-05 (3300 XL 8 mm) provides direct eddy-current displacement sensing with linear output proportional to target surface position.

Hardware Specifications

Parameter	Specification
Brand	Bently Nevada
Origin	USA
Weight	0.05 kg
Dimensions	1.5 x 1.3 x 116 cm
Operating Temp	-35 to +177 degC
Power Consumption	Passive sensor; powered via driver module
Thread	3/8-24 UNF
Unthreaded Length	0.0 in
Case Length	1.2 in
Total Length	1.5 m (4.9 ft)
Connector Type	Miniature coaxial ClickLoc connector
Agency Approvals	CSA, ATEX, IECEx

Eddy-Current Probe Scaling and Gap Voltage Validation

The probe’s calibration constant is fixed at 7.87 mV/μm (200 mV/mil), ensuring stable linear range from 0.25 to 2.3 mm (10 to 90 mils) standoff. Gap voltage validation targets -10 VDC under static installation conditions. Cross-talk suppression is achieved by maintaining a minimum 50 mm separation between adjacent probes in multi-channel rotor dynamics monitoring arrays.

Frequently Asked Questions

Q: Can this probe be used with non-Bently Nevada driver modules?

A: Only when the driver matches the 3300 XL 8 mm system impedance and scaling characteristics; mismatched drivers will cause incorrect displacement readings.

Q: What is the effect of temperature on probe performance?

A: Temperature variation within -35 to +177 degC results in negligible scale factor drift due to factory thermal compensation.

Q: Is hot-swapping supported in live machinery protection systems?

A: Hot removal or insertion is not recommended; power down the associated monitor to prevent transient signal errors.

Field Installation Guidelines

Mount the probe using the 3/8-24 UNF thread, engaging at least five full threads into the mounting bracket. Maintain perpendicular alignment to the target surface within ±1 deg. Route the coaxial cable away from high-voltage AC conductors to minimize electromagnetic interference. Ground the shield at the driver module end only, leaving the probe end insulated. Verify gap voltage before final tightening to ensure it reads near -10 VDC.

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