21000-16-05-00-080-04-02 | Bently Nevada | Proximity Probe Housing Assemblies

Bently Nevada 21000-16-05-00-080-04-02 Proximity Probe Housing Assembly

The Bently Nevada 21000-16-05-00-080-04-02, also cataloged as the 21000 Series Proximity Probe Housing Assembly, serves as a mechanical enclosure for 3300 XL 8 mm proximity probes, providing secure installation and environmental protection in turbine supervisory instrumentation systems.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 21000 series housing supports eddy-current probe scaling for accurate displacement monitoring. Recommended gap voltage validation at −10 VDC ensures calibration integrity during installation. Cross-talk suppression across adjacent probes is maintained by the housing’s mechanical isolation, while rotor dynamics monitoring benefits from the extended penetration depth (8.0 in) for deeper shaft access.

Frequently Asked Questions (FAQ)

Q: What probe type is supported in this housing assembly? A: It is designed for the 3300 XL 8 mm proximity probe.

Q: Can the housing be used in hazardous environments? A: Yes. It is CSA Type 4 rated, with explosion-proof options available for hazardous industrial applications.

Q: Does the assembly allow probe maintenance without machine disassembly? A: Yes. External access to the probe and extension cable enables gap adjustments or replacements without removing the monitored machine components.

Field Installation Guidelines

• Ensure proper thread engagement of the 3/4-14 NPT mounting thread (minimum 5 turns recommended).
• Route probe cables separately from high-voltage conductors to minimize EMI.
• Ground shielding at the monitoring rack end only to prevent ground loops.
• Verify probe penetration depth (8.0 in) matches machine design requirements.
• Inspect fittings and plugs for tight sealing to prevent ingress of contaminants.