Bently Nevada 31000-28-10-00-165-01-02 Probe Housing
A long through-case assembly with an approved 8 mm probe, 16.5-inch penetration and one conduit fitting.
Key Information
31000-28-10-00-165-01-02 is a Bently Nevada 31000 housing fitted with a 3300 XL 8 mm probe carrying the multiple-approval option. It uses a 1.0 m probe cable, no standoff adapter, 16.5-inch penetration, one 3/4-14 NPT fitting with two plugs and a 3/4-14 NPT mounting thread.
The 16.5-inch sleeve length exceeds the catalog threshold for an unsupported installation. A support near the probe is therefore required to prevent sleeve resonance, and the exact support geometry must be part of the machine installation design.
Functions
- Protects an approved 8 mm proximity probe at a through-case measurement point.
- Provides a single hardline-conduit entry while closing the unused ports with plugs.
- Allows external probe adjustment through the 31000 sleeve and retaining arrangement.
- Keeps the probe label accessible because the 1 m cable supports the documented visible-label range.
- Provides NEMA Type 4X / IP66 environmental protection when assembled and sealed correctly.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Model | 31000-28-10-00-165-01-02 |
| Probe Option 28 | 3300 XL 8 mm probe, multiple approvals |
| Probe Cable Length | 1.0 m (39 in) |
| Standoff Adapter | None |
| Probe Penetration | 16.5 in |
| Fitting Option 01 | One 3/4-14 NPT fitting and two plugs |
| Mounting Thread | 3/4-14 NPT |
| Required Long-Sleeve Control | Additional support near the probe because C + D exceeds 12 in |
| Visible Probe-Label Limit | Within the 19.0-in limit for a 1.0 m cable |
| Housing Material | Glass-fiber-reinforced PPS |
| Stainless Hardware | AISI 304 sleeve/chain and AISI 303 outer sleeve/screws |
| Environmental Rating | NEMA Type 4X / IP66 |
| Explosion-Proof Status | Housing is not explosion-proof |
Installation
- Engineer a rigid sleeve support close to the probe tip before fitting the long assembly.
- Confirm the full 16.5-inch path clears internal structures throughout machine operating movement.
- Bring hardline conduit through the single fitting and keep both unused ports correctly plugged.
- Check the approval certificate, barrier parameters and cable values for the complete loop.
- Verify gap stability at standstill and through slow roll before enabling alarms or trips.
Lifecycle
- Inspect the long sleeve and support for fretting, looseness or resonance marks during each outage.
- Keep plugs, fitting seals and grounding liner in the environmental inspection scope.
- Treat any change to penetration or support location as a mechanical and measurement change.
- Maintain approval records with the exact probe and associated apparatus rather than the housing prefix alone.
FAQ
Why does 31000-28-10-00-165-01-02 require a sleeve support?
Its combined standoff and penetration dimension is beyond the catalog threshold where an unsupported sleeve can resonate and corrupt the measurement or fatigue the assembly.
What support information is needed to quote 31000-28-10-00-165-01-02?
Send the internal machine drawing, support location, sleeve clearance, target position and expected casing vibration so the mechanical arrangement can be reviewed.
How does the E01 fitting package affect 31000-28-10-00-165-01-02 installation?
It provides one conduit entry and closes two ports; use it where a single hardline route is required and verify plug accessibility after mounting.
Is the approval option in 31000-28-10-00-165-01-02 enough for hazardous-area acceptance?
No. The probe certificate, associated barrier or isolator, field wiring and area drawing must all agree, and the housing itself is not explosion-proof.
What test detects a poor long-sleeve installation of 31000-28-10-00-165-01-02?
Review gap stability, slow-roll waveform and vibration response for support resonance or movement before comparing the channel with normal operating data.
