The 21000-28-10-00-244-04-02 is a Bently Nevada aluminum external-mount probe housing with a 3300 XL 8 mm probe using selectable hazardous-area approvals, 1.0 m cable, no standoff adapter, 24.4 in probe penetration, one 3/4-14 NPT plug, and 3/4-14 NPT mounting thread.
- Long-penetration external probe housing
- Aluminum body
- 304 stainless steel
- 3300 XL 8 mm with selectable approvals
Its long stainless-steel sleeve carries and positions the reverse-mount probe through a deep machine-casing path while the external aluminum housing protects the probe lead and provides conduit access for the matched proximity transducer system. For dependable measurement, follow the official system-matching, target, mounting, cabling, environmental, and approval instructions.
Important Notice: The 24.4 in penetration exceeds the 12 in unsupported limit, so additional sleeve support is required by the official datasheet.
Apter Power 21000-28-10-00-244-04-02 Original Product Manual
Important Notice: This Apter Power original manual summarizes manufacturer-published technical data for the exact ordering code. Verify the physical nameplate and current manufacturer installation documents before use.
Deep Machine-Casing PenetrationPlaces the probe 24.4 in into a casing or bearing-housing structure.
Large Turbine HousingsSupports externally mounted shaft measurements where the target is far from the outer casing wall.
Long Bearing-Housing RoutesUses a supported sleeve to route the probe through an inner bearing housing.
Fluid-Film-Bearing MachineryEnables non-contacting shaft vibration and position measurement through the included probe.
Conduit-Protected InstallationsProvides NPT interfaces for protected routing between the housing and transducer wiring.
API 670 External Probe MountingUses the 21000 housing family intended for externally mounted proximity probes.
Read and follow Bently Nevada 21000, 24701, and 164818 Proximity Probe Housing Assemblies Datasheet 141600 Rev. AC and the applicable installation instructions before use. Verify the complete ordering code from the physical nameplate and match every component to the published system configuration.
1Install sleeve support near the probe because the 24.4 in penetration exceeds the manufacturer 12 in unsupported-length limit.
2Use the 37948-01 support and oil seal or a manufacturer-approved support where the sleeve passes through an inner bearing housing.
3Confirm the 1.0 m probe lead remains longer than the sleeve and matches the selected extension cable and Proximitor Sensor.
4Do not infer explosion-proof housing certification from option 28 or the NPT plug; verify the exact housing nameplate and current documentation.
5Check penetration, adjustment range, target clearance, conduit sealing, and final probe gap before commissioning.
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