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Engineered for heavy-duty industrial turbomachinery monitoring, the Bently Nevada 21000-28-10-00-095-04-02 is a robust proximity probe housing assembly designed to facilitate the external installation, adjustment, and removal of proximity probes. This housing serves as an environmental barrier and mechanical support, allowing plant operators to service probes while machinery is running or under process pressure. Built with an aluminum body and a durable 304 stainless steel sleeve, it provides superior resistance to mechanical wear and harsh atmospheric conditions, making it suitable for hazardous area deployments in global industrial facilities.
| Specification Parameter | Value / Rating |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-28-10-00-095-04-02 |
| Product Type | Proximity Probe Housing Assembly |
| Probe Option (-28) | 3300 XL 8 mm probe, multiple approvals |
| Probe Cable Length (-10) | 1.0 meter (39 inches) |
| Standoff Adapter (-00) | No standoff adapter installed |
| Probe Penetration (-095) | 9.5 inches (241.3 mm) |
| Fittings Option (-04) | One 3/4-14 NPT plug only |
| Mounting Thread (-02) | 3/4-14 NPT |
| Housing Material | Anodized Aluminum Body |
| Sleeve Material | 304 Stainless Steel |
| Country of Origin | United States |
| Shipping Weight (Calculated) | 2.0 kg (4.4 lbs) |
This specific model configuration has been officially succeeded by the 21000-16-10-00-095-04-02. The key difference lies in the probe approval selection (Option -16 vs Option -28). The mechanical form factor, 9.5-inch sleeve penetration depth, and thread size remain fully compatible, allowing direct drop-in field replacement without modifying machine casings.
When deploying the aluminum housing variant in high-temperature machinery locations, take note of differential thermal expansion between the 304 stainless steel sleeve and the aluminum enclosure. To prevent micro-galling or seizing over prolonged thermal cycles, ensure that the thread engagement area is free from particulate contamination and matches the specific NPT taper tolerance of the machine bracket.
Ensure the coaxial connection between the probe lead and the extension cable is correctly insulated inside the housing. Avoid tight bends when packing the excess 1.0-meter cable length into the junction head; maintaining a minimum cable bend radius of 25.4 mm (1 inch) is critical to prevent impedance changes that can introduce noise or distort the 3300 XL proximitor calibration curve.
De-energize all machinery and ensure internal casing pressures are fully vented before installing, adjusting, or extracting the probe housing. Failure to verify depressurization can result in high-velocity ejection of components, severe physical injury, and structural machine damage.
Clean the machine port internal threads and inspect the housing's 3/4-14 NPT mounting threads for defects.
Apply a thin layer of high-temperature anti-seize compound or PTFE thread sealant to the mounting threads.
Carefully insert the 304 stainless steel sleeve into the machine port, threading the housing by hand to prevent cross-threading before final torque is applied.
Secure the NPT plug into the unused conduit port using standard industry torque values to ensure environmental ingress protection.
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Returns & Warranty

Engineered for heavy-duty industrial turbomachinery monitoring, the Bently Nevada 21000-28-10-00-095-04-02 is a robust proximity probe housing assembly designed to facilitate the external installation, adjustment, and removal of proximity probes. This housing serves as an environmental barrier and mechanical support, allowing plant operators to service probes while machinery is running or under process pressure. Built with an aluminum body and a durable 304 stainless steel sleeve, it provides superior resistance to mechanical wear and harsh atmospheric conditions, making it suitable for hazardous area deployments in global industrial facilities.
| Specification Parameter | Value / Rating |
|---|---|
| Manufacturer | Bently Nevada |
| Model Number | 21000-28-10-00-095-04-02 |
| Product Type | Proximity Probe Housing Assembly |
| Probe Option (-28) | 3300 XL 8 mm probe, multiple approvals |
| Probe Cable Length (-10) | 1.0 meter (39 inches) |
| Standoff Adapter (-00) | No standoff adapter installed |
| Probe Penetration (-095) | 9.5 inches (241.3 mm) |
| Fittings Option (-04) | One 3/4-14 NPT plug only |
| Mounting Thread (-02) | 3/4-14 NPT |
| Housing Material | Anodized Aluminum Body |
| Sleeve Material | 304 Stainless Steel |
| Country of Origin | United States |
| Shipping Weight (Calculated) | 2.0 kg (4.4 lbs) |
This specific model configuration has been officially succeeded by the 21000-16-10-00-095-04-02. The key difference lies in the probe approval selection (Option -16 vs Option -28). The mechanical form factor, 9.5-inch sleeve penetration depth, and thread size remain fully compatible, allowing direct drop-in field replacement without modifying machine casings.
When deploying the aluminum housing variant in high-temperature machinery locations, take note of differential thermal expansion between the 304 stainless steel sleeve and the aluminum enclosure. To prevent micro-galling or seizing over prolonged thermal cycles, ensure that the thread engagement area is free from particulate contamination and matches the specific NPT taper tolerance of the machine bracket.
Ensure the coaxial connection between the probe lead and the extension cable is correctly insulated inside the housing. Avoid tight bends when packing the excess 1.0-meter cable length into the junction head; maintaining a minimum cable bend radius of 25.4 mm (1 inch) is critical to prevent impedance changes that can introduce noise or distort the 3300 XL proximitor calibration curve.
De-energize all machinery and ensure internal casing pressures are fully vented before installing, adjusting, or extracting the probe housing. Failure to verify depressurization can result in high-velocity ejection of components, severe physical injury, and structural machine damage.
Clean the machine port internal threads and inspect the housing's 3/4-14 NPT mounting threads for defects.
Apply a thin layer of high-temperature anti-seize compound or PTFE thread sealant to the mounting threads.
Carefully insert the 304 stainless steel sleeve into the machine port, threading the housing by hand to prevent cross-threading before final torque is applied.
Secure the NPT plug into the unused conduit port using standard industry torque values to ensure environmental ingress protection.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|