Bently Nevada 330173-00-08-05-02-05 3300 5 mm Proximity Probe

Configured for fluid-film bearing vibration and position measurement in machinery protection systems, the Bently Nevada 330173-00-08-05-02-05 (330173 5 mm Proximity Probe) provides direct displacement measurement through an eddy-current sensing circuit. The probe detects changes in the distance between its 5 mm tip and a conductive target surface, while the associated Proximitor sensor supplies excitation and conditions the output signal.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The Bently Nevada 330173-00-08-05-02-05 uses eddy-current probe scaling to convert mechanical displacement into a proportional electrical signal. As the distance between the probe tip and conductive target changes, the sensor system produces a corresponding voltage change.

During installation, technicians can validate probe positioning by checking the static gap voltage through the associated monitoring circuit. A nominal target near -10 VDC is commonly used for machinery protection applications when the probe system and target material meet the applicable calibration requirements.

Furthermore, correct gap voltage positioning supports measurement within the specified linear range. Dynamic signals can then represent radial shaft vibration, relative shaft position, and rotor motion characteristics in fluid-film bearing machinery. Proper cable routing also helps reduce cross-talk between adjacent proximity measurement channels.

Frequently Asked Questions

Q: Can the Bently Nevada 330173-00-08-05-02-05 operate without a Proximitor sensor?

A: No. The probe requires a matched 3300 series Proximitor sensor or compatible signal conditioning system to provide excitation and convert the probe response into a usable output signal.

Q: What is the function of the miniature coaxial ClickLoc connector?

A: The ClickLoc connector provides the connection between the probe assembly and the associated cable system. Its locking mechanism helps maintain connector engagement in machinery environments subject to vibration.

Q: Why should the gap voltage be checked before machinery startup?

A: Gap voltage verification confirms the mechanical position of the probe relative to the conductive target. Therefore, technicians can identify incorrect probe adjustment before the measurement system enters normal operation.

Field Installation Guidelines

1. Install the Bently Nevada 330173-00-08-05-02-05 in the machine mounting bracket using the M8 x 1 threaded case. Maintain correct mechanical alignment with the conductive target.
2. Adjust the probe position according to the applicable system installation procedure. Then verify the static gap voltage through the associated Proximitor sensor and monitoring circuit.
3. Route the 0.5 m coaxial cable separately from high-voltage conductors, motor leads, and variable frequency drive output cables where practical.
4. Connect the miniature coaxial ClickLoc connector to the mating cable connection and confirm full mechanical engagement.
5. Avoid excessive cable tension, sharp bends, crushing, or mechanical damage to the probe cable during installation.
6. Before commissioning, verify probe mounting, connector engagement, cable condition, and gap voltage against the applicable machinery protection system requirements.