Bently 21000‑16‑05‑15‑072‑03‑02

Bently 21000‑16‑05‑15‑072‑03‑02

Product Brief Introduction: Full‑spec API‑670 external mounting housing assembly for reverse‑mount 3300 XL 8 mm proximity probes. This variant features long 7.2‑inch probe penetration, targeting thick‑wall bearing housings found on heavy‑duty turbomachinery. All‑metal explosion‑proof construction protects probe hardware in hazardous‑area plant environment. Assembly provides mechanical fixation, multi‑point sealing and conduit interface for probe cabling. Complete fitting hardware included for field assembly and commissioning.

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Description

Bently 21000‑16‑05‑15‑072‑03‑02

  • 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: 1.5‑inch stand‑off (code 15)
    • Probe penetration depth: 7.2‑inch penetration (code 072)
    • Fitting kit (code 03): NPT plug, reducer, multi‑size cable‑seal gland and grommet accessories
    • Mounting thread: 3/4‑14 NPT thread (code 02)
    • Certification & standard: CSA Type 4 enclosure rating, explosion‑proof, full API‑670 compliance
  • Functional Features: Long‑penetration sleeve accommodates extra‑thick bearing‑housing wall structure. Explosion‑proof all‑metal enclosure prevents mechanical damage and contamination reaching internal probe. Comprehensive O‑ring sealing system resists oil mist, dust and water vapour ingress. Probe penetration adjustable for precise static‑gap setting. Side conduit ports offer protected cable routing. Full installation accessories delivered as one complete set. Maintains stable probe‑shaft relative position under sustained equipment vibration.
  • Application Scenarios: Heavy‑duty steam turbines, large centrifugal compressors with thick cast bearing housings. Power‑plant and petrochemical‑site critical machinery monitoring projects complying with API‑670 within hazardous classified zones.
  • Performance Parameters: Stable probe‑target spatial relationship retained under continuous operational vibration. Sealing assembly maintains performance under prolonged exposure to hot oily plant atmosphere. Enclosure satisfies explosion‑proof specification for gas‑hazardous locations.
  • Material Composition: Aluminium alloy housing main‑body; long 304 stainless‑steel probe sleeve. Corrosion‑resistant elastomer O‑ring seals. Metal dome cover and standard NPT pipe fittings.
  • Structural Characteristics: Pre‑assembled unit made up of dome cover, main housing body, long probe sleeve, 1.5‑inch stand‑off adapter, sealing O‑ring set and conduit accessory kit. Threaded dome‑cover connection. Side threaded ports for field conduit installation.
  • Working Principle: Serves as mechanical protective fixture for reverse‑mount eddy‑current probe. Probe is fixed inside sleeve assembly. Entire housing unit mounts externally onto bearing housing surface. Assembly locks probe into stable position relative to rotating shaft target and delivers environmental sealing and mechanical shielding. Probe performs displacement and vibration measurement based on eddy‑current effect.
  • Installation Requirements: Apply suitable thread‑seal compound to mounting threads. Verify all O‑rings are correctly seated before securing dome cover. Adjust probe penetration depth to achieve static gap inside probe linear working interval. Attach field conduit to housing threaded port. Fully tighten dome‑cover threads to maintain explosion‑proof enclosure integrity.
  • Usage Notes: Take extra care during transportation and installation; long slender probe sleeve is vulnerable to impact‑induced bending. Never place equipment into service with defective or missing sealing rings. Periodically inspect dome‑cover tightness on high‑vibration machinery. No field modification or machining of housing assembly permitted. All maintenance work inside hazardous zones shall strictly observe local site safety regulations.

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