Description

Bently Nevada 330709-000-060-50-02-05 3300 XL 11 mm Proximity Probe

Configured for shaft displacement measurement and vibration signal acquisition in the 3300 XL Proximity Transducer System, the Bently Nevada 330709-000-060-50-02-05 (330709 3300 XL 11 mm Proximity Probe) provides direct eddy-current sensing for rotating machinery monitoring circuits.

Hardware Specifications

Parameter	Specification
Model	330709-000-060-50-02-05
Brand	Bently Nevada
Product Series	3300 XL 11 mm Proximity Probe
Origin	USA
Weight	Approx. 0.3 kg to 0.5 kg
Dimensions	11 mm probe tip diameter; 60 mm case length; 5.0 m total length
Operating Temp	-51 deg C to +177 deg C
Power Consumption	Supplied by compatible 3300 XL Proximitor Sensor; probe operates as passive eddy-current sensing element
Measurement Principle	Eddy-current non-contact displacement measurement
Linear Range	4.0 mm (160 mils)
Incremental Scale Factor	3.94 V/mm (100 mV/mil) nominal
Target Material	AISI 4140 steel standard calibration target
Thread Type	M16 x 1.5 metric thread
Probe Tip Material	Polyphenylene sulfide (PPS)
Case Material	AISI 304 stainless steel
Cable Type	75 ohm triaxial cable with FEP insulation
Connector Type	Miniature coaxial ClickLoc connector
Agency Approval	CSA, ATEX, IECEx hazardous area approvals

Eddy-Current Probe Scaling and Rotor Dynamics Monitoring

The 330709-000-060-50-02-05 uses an 11 mm eddy-current sensing element to convert shaft position changes into proportional electrical output signals. The 3300 XL system applies probe scaling characteristics through the Proximitor Sensor to maintain displacement measurement accuracy.

Furthermore, the probe supports rotor dynamics analysis by providing shaft vibration and axial position data for condition monitoring systems. The measurement circuit evaluates shaft motion, mechanical clearance variation, and dynamic displacement behavior during machine operation.

The installation process requires correct probe gap adjustment because the gap voltage directly affects measurement linearity. The standard Bently Nevada setup uses gap voltage validation with -10 VDC targets to confirm the probe operates inside the specified measurement region.

Frequently Asked Questions

Q: Can the 330709-000-060-50-02-05 operate without a Proximitor Sensor?
A: No. The probe requires a compatible 3300 XL Proximitor Sensor and extension cable to form a complete eddy-current transducer system.

Q: What type of mechanical movement can this probe measure?
A: The probe measures non-contact shaft displacement, including radial vibration and axial position changes in rotating machinery.

Q: What installation factors affect measurement accuracy?
A: Probe gap setting, target material condition, cable routing, and proper shielding connection directly influence signal stability and measurement performance.

Field Installation Guidelines

• Install the probe with the specified M16 x 1.5 mounting thread and maintain proper mechanical alignment with the monitored shaft surface.
• Verify the probe tip faces the correct target area and remains free from physical contact during operation.
• Adjust the probe gap according to the compatible Proximitor Sensor calibration requirements and confirm the gap voltage before commissioning.
• Route the triaxial cable separately from high-current power conductors to reduce electromagnetic interference.
• Connect cable shielding according to the system grounding practice defined for the 3300 XL monitoring rack installation.
• Inspect the ClickLoc connector engagement to ensure a secure electrical connection under machine vibration conditions.

Specifications

• Brand: Bently Nevada

Advantages

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