Bently Nevada 31000-28-10-00-175-02-02 Probe Housing
A 17.5-inch long approved 8 mm probe housing with two conduit fittings and a 1 m probe lead.
Key Information
31000-28-10-00-175-02-02 is the E02 fitting execution of a 31000 housing with a multiple-approval 3300 XL 8 mm probe. It uses a 1.0 m lead, no standoff, 17.5-inch penetration, two 3/4-14 NPT fittings with one plug and a 3/4-14 NPT mounting thread.
The additional inch of penetration distinguishes it from the 16.5-inch variants and changes the internal reach and support geometry. The sleeve remains within the published dimensional allowance for a 1 m probe but requires a support near the probe because it exceeds 12 inches.
Functions
- Carries an 8 mm probe to a deep measurement point through a protected sleeve.
- Provides dual conduit entries for the field installation.
- Allows gap adjustment from outside the machine casing.
- Maintains an approved probe option within an environmental housing.
- Keeps the probe label outside the sleeve within the catalog visibility limit for this cable length.
Specifications
| Manufacturer | Bently Nevada, a Baker Hughes business |
|---|---|
| Model | 31000-28-10-00-175-02-02 |
| Probe Option 28 | 3300 XL 8 mm probe, multiple approvals |
| Probe Cable Length | 1.0 m |
| Standoff Adapter | None |
| Probe Penetration | 17.5 in |
| Fitting Option 02 | Two 3/4-14 NPT fittings and one plug |
| Mounting Thread | 3/4-14 NPT |
| Long-Sleeve Requirement | Additional support near the probe |
| 1 m Cable Dimensional Limit | 30.0 in maximum C + D; 19.0 in with label visible |
| Adjustment Range | ±0.5 in at the penetration sleeve |
| Housing Environmental Rating | NEMA Type 4X / IP66 |
| Housing Impact Qualification | Certified impact testing documented for the housing family |
Installation
- Compare the 17.5-inch reach with the machine cross-section and maximum rotor movement.
- Design the sleeve support before machining or outage work and keep it near the probe.
- Route the two conduits without transferring bending load to the housing.
- Preserve label visibility and cable service loop outside the sleeve.
- Check cold gap, slow-roll response and alarm action after final tightening.
Lifecycle
- Mark the 17.5-inch dimension in the equipment bill of materials so it is not collapsed into the 16.5-inch alternative.
- Inspect support, sleeve and conduit loads after thermal cycles or major outages.
- Review prolonged steam or hot-water exposure because it can reduce PPS housing strength.
- Control approved-loop changes through the site management-of-change process.
FAQ
Can 31000-28-10-00-175-02-02 replace a 16.5-inch housing without modification?
Not automatically. The extra reach changes probe position, support location and available adjustment, so the machine drawing and target clearance must be rechecked.
Where should the support for 31000-28-10-00-175-02-02 be located?
Place a rigid support near the probe while preserving adjustment and avoiding side-view metal; the exact position must follow the machine geometry.
What cable-routing risk is increased on 31000-28-10-00-175-02-02?
Long insertion plus two conduits can transfer mechanical load into the housing, so provide independent conduit support and a serviceable probe-lead loop.
How is label visibility useful when installing 31000-28-10-00-175-02-02?
Keeping the part and serial label accessible improves channel verification and maintenance without withdrawing the long probe assembly.
Which commissioning evidence should be retained for 31000-28-10-00-175-02-02?
Keep the support drawing, final insertion, static gap, slow-roll waveform, conduit-seal inspection and protection-channel test results.
