The Bently Nevada 21000-16-05-00-074-04-02, also cataloged as the 21000 Proximity Probe Housing, operates as a dedicated hardware component for physical containment and external linear adjustment of proximity sensors within Proximity Probe Housing Assemblies. The unit functions as a sealed pressure-boundary interface, enabling precise alignment and replacement of proximity transducers through the machinery casing wall without requiring system decompression or lubrication loop shutdown.

Alphanumeric Suffix Matrix

The sequence of options designates specific structural dimensions and fluid boundary properties for installation:

• 21000: Base equipment designator for the adjustable proximity probe housing assembly.

• -16: Explosion-proof/environmental cable seal option.

• -05: External conduit fitting configuration.

• -00: Standard hardware fitting package (no additional elements included).

• -074: Nominal sleeve length option (defines mechanical insertion depth capabilities).

• -04: Machine casing thread size and engagement specifications.

• -02: Enclosure material choice and environmental protective coating configuration.

Technical Data Grid

Eddy-Current Probe Scaling and Rotor Dynamics Stability

The structural assembly of the Bently Nevada 21000-16-05-00-074-04-02 housing isolates the transducer from external mechanical stress profiles that degrade eddy-current probe scaling accuracy. By establishing a rigid, non-resonant coaxial interface relative to the observed shaft target, it eliminates casing vibrations that induce measuring anomalies in high-velocity rotor dynamics profiles. This positioning stiffness ensures repeatable gap voltage validation (-10 VDC targets) during static installation routines. Additionally, the solid metallic sleeve provides a continuous grounding and shielding path, contributing to complete cross-talk suppression between adjacent sensor circuits routed within shared structural conduit banks.

Shipment Box Contents

• 1 x Bently Nevada 21000 main external housing cylinder

• 1 x Internal linear adjustable positioning sleeve

• 1 x High-pressure packing gland elastomeric sealing ring set

• 2 x Heavy industrial hex locknuts

Field Installation Guidelines

1. Verify that the thread profile on the machine casing interface matches the outer casing thread option (-04 suffix) prior to mechanical mounting.

2. Ensure a minimum engagement of 5 full threads into the machine casing wall to secure the process pressure boundary.

3. Feed the unshielded proximity probe tip and cable through the internal sleeve bore carefully, ensuring no torsion or abrasive contact occurs along the internal walls.

4. Adjust the depth of the internal sleeve until the transducer output matches the designated gap voltage validation (-10 VDC targets) using a standard multimeter.

5. Torque the primary hex locknuts against the housing body to secure the calibrated position against high-frequency structural vibration.

Logistics Packaging Protocols

Delivery time: 2-7 days when payment finish, routed internationally using express air carriers including DHL, FEDEX, and UPS. Components are dispatched in qualified anti-static industrial packaging using custom-molded shock-absorbing foam profiles to secure thread paths, internal seals, and critical mechanical dimensions from transit degradation.

Mechanical Integrity FAQ

Q: Does the material composition of the housing interfere with the eddy-current probe scaling parameters?

A: No, the structural components at the operational tip are composed of non-magnetic metals, ensuring that the sensor's calibrated voltage-to-distance slope is unaffected by the enclosure.

Q: How is the fluid boundary sustained when adjusting the probe depth while the machine is running?

A: The housing incorporates a high-pressure dynamic packing gland around the internal sleeve, which prevents lubrication oil or process gas leakage during manual adjustments.

Q: Is external grounding wiring required to enable the cross-talk suppression features of this housing?

A: No, cross-talk suppression is achieved via the direct, metal-to-metal thread contact with the machine frame, providing a direct reference ground for the sensor shield loop.