Description
Bently 21000‑16‑10‑20‑083‑03‑02
- Technical Specifications
- Compatible Probe: 3300 XL 8 mm reverse‑mount proximity probe
- Housing main‑body material: Aluminium alloy
- Sleeve material: 304 stainless steel
- Standoff Adapter: 2.0‑inch stand‑off (code 20)
- Probe Penetration Depth: 8.3‑inch penetration (code 083)
- Fitting Kit (code 03): NPT plug, reducer fitting, multi‑size cable‑seal gland and grommet accessories
- Mounting Thread: 3/4‑14 NPT thread (code 02)
- Enclosure Standard: CSA Type 4, explosion‑proof certification, fully compliant with API‑670
- Functional Features: Extended stand‑off adapter bypasses mechanical obstacles near mounting surface. Extra‑long penetration sleeve suits very thick‑wall bearing housings. Explosion‑proof all‑metal housing safeguards probe from mechanical damage and site contamination. Complete multi‑O‑ring sealing system blocks oil mist, dust and vapour penetration. Side conduit ports offer protected cable routing. Full installation accessories included upon delivery. Preserves probe‑target positional stability during long‑term machine operation with heavy vibration.
- Application Scenarios: Large steam turbine and heavy‑duty centrifugal compressor monitoring. Bearing‑housing external installation where surrounding structures create obstruction against standard‑standoff housings. Power‑generation and petrochemical‑plant hazardous‑area projects complying with API‑670 specification.
- Performance Parameters: Reliably maintains fixed probe‑to‑shaft offset under continuous machinery vibration. Sealing assembly resists harsh hot oily industrial atmosphere. Enclosure meets formal explosion‑proof requirements for classified hazardous locations.
- Material Composition: Aluminium alloy housing main‑body; long 304 stainless‑steel probe sleeve; corrosion‑resistant elastomer O‑ring sealing components; metal dome cover and NPT conduit fittings.
- Structural Characteristics: Pre‑assembled assembly containing dome cover, housing main‑body, extended‑length probe sleeve, 2‑inch stand‑off adapter, sealing O‑ring set and full conduit accessory kit. Dome cover attached via threaded connection. Side threaded ports for connecting field‑installed metal conduit.
- Working Principle: Acts as mechanical protective fixture for reverse‑mount eddy‑current proximity probe. Probe installs inside sleeve assembly; full housing unit mounts externally onto machine bearing housing. Assembly holds probe in fixed spatial relationship with rotating‑shaft target and provides mechanical shielding plus environmental sealing. Probe carries out displacement and vibration measurement by eddy‑current sensing principle.
- Installation Requirements: Apply proper thread‑seal compound on mounting threads. Ensure all O‑ring components are correctly fitted into grooves before closing dome cover. Adjust probe penetration depth to place static gap inside probe linear working range. Secure field conduit onto housing port. Tighten dome‑cover thread completely to retain explosion‑proof enclosure integrity.
- Usage Notes: Long probe sleeve is susceptible to bending damage; avoid impact during transport and installation. Never start machinery if sealing components are damaged or missing. Under high‑vibration environment perform periodic inspection for dome‑cover loosening. Any mechanical alteration of housing assembly is forbidden. Hazardous‑area maintenance work must strictly implement site safety operating procedures.
