Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330709-000-060-50-02-05 |
| Base Model | 330709 |
| Brand | Bently Nevada |
| Product Series | 3300 XL 11 mm Proximity Probe System |
| Product Type | Eddy-Current Proximity Probe |
| Origin | Not specified in the supplied data |
| Thread Size | M16 x 1.5 |
| Probe Type | 3300 XL 11 mm, unarmored |
| Unthreaded Length | 0 mm |
| Overall Case Length | 60 mm |
| Cable Length | 5.0 m |
| Cable Type | Standard coaxial cable |
| Connector | Miniature coaxial ClickLoc connector |
| Sensitivity | 3.94 V/mm (100 mV/mil) |
| Measurement Principle | Eddy-current non-contact displacement sensing |
| Measurement Function | Vibration, shaft displacement, position, axial position, differential expansion, speed and phase reference |
| Maximum Case Torque | 63.3 N m (560 in lb) |
| Recommended Installation Torque | 21.1 N m (187 in lb) |
| Dimensions | 60 mm overall case length; other dimensions not specified |
| Power Consumption | Not specified; probe operates as part of an external proximity measurement system |
| Agency Approval Option | Multiple hazardous-area approvals, including ATEX, CSA and IECEx |
Eddy-Current Scaling and Gap Voltage Validation
The 3300 XL 11 mm probe operates as an eddy-current displacement transducer with an output sensitivity of 3.94 V/mm (100 mV/mil). The associated driver establishes the electrical operating point and converts target movement into a proportional voltage signal.
During commissioning, technicians should validate probe gap voltage against the specified driver and monitoring-system requirements. A -10 VDC target is commonly used for Bently Nevada proximity probe gap-voltage verification when the applicable system configuration requires it. The actual acceptance value must follow the installed driver and system documentation.
The 11 mm sensing configuration provides an extended measurement capability compared with smaller probe geometries. Therefore, technicians should verify probe-to-target spacing, target material, mechanical runout, and probe alignment before interpreting vibration or position measurements.
Frequently Asked Questions
Q: What connector does the 330709-000-060-50-02-05 use?
A: The probe uses a miniature coaxial ClickLoc connector with a 5.0 m standard cable.
Q: What is the specified probe sensitivity?
A: The specified sensitivity is 3.94 V/mm, equivalent to 100 mV/mil.
Q: What installation torque values are specified for the probe case?
A: The supplied data specifies 21.1 N m (187 in lb) as the optimal installation torque and 63.3 N m (560 in lb) as the maximum case torque.
Field Installation Guidelines
- Confirm the M16 x 1.5 mounting thread and mechanical installation interface before installation.
- Maintain the required probe-to-target clearance specified by the applicable 3300 XL installation documentation.
- Align the probe perpendicular to the intended measurement surface where the mechanical arrangement requires it.
- Inspect the probe tip and target surface for contamination, mechanical damage, or abnormal wear before commissioning.
- Route the coaxial cable separately from high-current power conductors and strong electromagnetic noise sources where practical.
- Avoid excessive cable bending, crushing, or mechanical tension at the probe and connector ends.
- Maintain appropriate cable shielding and grounding practices according to the installed driver and monitoring-system wiring design.
- Verify connector engagement before energizing the measurement channel.
- Check the probe gap voltage during commissioning and compare the measured value with the applicable driver and monitoring-system requirements.
- Verify signal polarity, channel scaling, and engineering units before placing the measurement channel into service.
- Confirm that the monitoring system uses the correct 3300 XL 11 mm probe scaling before evaluating vibration, displacement, or position data.
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