Description

The Bently Nevada 21000-16-05-00-084-04-02, also cataloged as the 21000 Aluminum probe housing assembly, operates as a dedicated hardware component for mechanical environmental enclosure within turbine supervisory instrument systems.

Suffix Breakdown & Model Matrix

Hardware Specifications

Rotor Dynamics and Gap Voltage Validation

The 21000-16-05-00-084-04-02 mechanical assembly secures eddy-current transducers in alignment with rotating shafts to facilitate accurate vibration monitoring and rotor dynamics evaluation. Proper mechanical coupling maintains stable eddy-current probe scaling coefficients by preventing mechanical displacement of the sensing tip relative to the observed target shaft. During commissioning, gap voltage validation targets must achieve -10 VDC under static machine operating conditions. The robust physical housing construction minimizes cross-talk suppression issues by providing a continuous electromagnetic shield path around the internal coaxial connectors and probe cables.

Frequently Asked Questions

Q: Does this housing assembly include internal terminal blocks for signal wiring termination?

A: No. The interior serves as a mechanical enclosure and wiring cavity to house probe-to-extension cable connections without active electrical circuitry.

Q: What torque limit applies when threading the conduit fittings into the housing ports?

A: Pipe threads must be engaged to standard industrial NPT depth specifications using thread sealant, taking care to avoid over-tightening that could crack the aluminum casting.

Q: How does the housing impact gap voltage measurements during setup?

A: The housing provides a grounded metallic barrier that shields internal transducer connections from external electromagnetic interference, stabilizing the -10 VDC static gap voltage baseline.

Field Installation Guidelines

Mount the housing rigidly to a flat machine surface or designated mounting bracket to prevent transmission of high-frequency machine frame vibration to the internal probe. Route all field wiring through sealed conduit entries pointing downward to prevent moisture ingress into the enclosure cavity. Ensure the internal O-ring seal is correctly seated within the cover groove prior to final thread engagement. Maintain proper thread engagement depth on NPT fittings to preserve environmental sealing integrity.