Description

Bently Nevada 330101-00-67-10-12-CN 3300 XL 8 mm Proximity Probe

Configured for rotor displacement and vibration monitoring in the 3300 XL Transducer System, the Bently Nevada 330101-00-67-10-12-CN, also cataloged as the 330101 proximity probe, provides direct physical gap measurement via eddy-current interaction with conductive targets. Output voltage varies linearly with probe-to-target spacing, enabling deterministic shaft position and vibration data acquisition.

Hardware Specifications

Parameter	Specification
Model Brand	Bently Nevada 330101-00-67-10-12-CN
Origin	United States
Weight	0.18 kg
Dimensions	8 mm probe tip, 6.7 in case length, 1.0 m cable
Operating Temp	-51 degC to +177 degC
Power Consumption	Passive eddy-current device, no active power draw
Linear Range	2.0 mm (80 mils)
Scale Factor	7.87 V/mm ± 6.5%
Frequency Response	0 to 6.5 kHz (+0, -3 dB)
Probe Tip Material	Polyphenylene sulfide (PPS)
Case Material	AISI 304 stainless steel
Connector Type	Gold-plated ClickLoc coaxial

Eddy-Current Probe Scaling and Gap Voltage Validation

Scaling accuracy is maintained through factory calibration against AISI 4140 steel targets, ensuring consistent 7.87 V/mm output per unit displacement. Gap voltage validation targets a nominal -10 VDC bias when installed at the specified probe-to-shaft clearance. This reference point anchors rotor dynamic analysis and enables early detection of radial and axial motion deviations without recalibration drift.

Frequently Asked Questions

Q: Can this probe be replaced without system recalibration?

A: Replacement requires verification of gap voltage against the -10 VDC nominal setpoint; full system scaling remains valid if mechanical mounting and target material are unchanged.

Q: What is the minimum target size required for accurate measurement?

A: Minimum target diameter is 15.2 mm to maintain linear response and avoid edge effect errors.

Q: Does the probe support operation in explosive atmospheres?

A: Yes, the -CN suffix indicates compliance with CNEx/ATEX/IECEx intrinsic safety requirements when installed with approved barriers and cabling.

Field Installation Guidelines

Install the probe fully threaded into the machine housing until the case shoulder contacts the mounting surface. Maintain electrical isolation of the probe body from grounded structures unless explicitly required by the system grounding diagram. Use proper shielding continuity from probe connector to termination, grounding the shield at one end only to prevent ground loops. Avoid routing the probe cable parallel to high-voltage conductors to minimize electromagnetic interference. Verify gap voltage before final system commissioning.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems