24701-28-10-00-110-03-02 Bently Nevada 24701 Probe Housing Assembly

24701-28-10-00-110-03-02 | Bently Nevada Proximity Probe Housing Assembly

The Bently Nevada 24701-28-10-00-110-03-02 is a proximity probe housing assembly configured for a 3300 XL 8 mm reverse-mount probe. It provides a protected mounting arrangement with a dome cover, probe sleeve, sealing elements, and conduit-entry fittings.

This configuration uses a 1.0 m probe cable, no standoff adapter, an 11 in probe penetration, and a 3/4-14 NPT mounting thread. Its housing body uses 303 stainless steel, while the probe sleeve uses 304 stainless steel.

Configuration Tree | Decode the Complete Part Number

• 24701 — Proximity Probe Housing Assemblies
  • 28 — 3300 XL 8 mm reverse-mount probe, with an approval option
    • 10 — Probe cable length: 1.0 m (39 in)
    • 00 — No standoff adapter
    • 110 — Probe penetration: 11 in
    • 03 — Fittings package:
      • One 3/4-14 NPT plug
      • One 3/4-14 to 1/2-14 NPT reducer
      • One cable seal grip with grommets for cable diameters of 1/8–3/16 in, 1/4–5/16 in, and 5/16–3/8 in
    • 02 — Mounting thread: 3/4-14 NPT

Configuration caution: The probe option is described as having an approval option, but the supplied part details do not identify the exact certification. Confirm the probe’s approval marking and suitability for the installation area before ordering.

Engineering Data | Assembly and Mechanical Details

Dimension note: The supplied source pairs 17.0 in with “43.18 mm” and 29.2 in with “74.2 mm.” Those metric values are incorrect as written; the correct conversions are 43.18 cm and approximately 74.2 cm. Confirm the drawing’s C and D reference points before using these dimensions for clearance or fabrication.

Assembly Architecture | Components and Their Roles

• Dome cover: Screws into the housing body to enclose the assembly.
• Threaded conduit ports: Provide entry points for conduit and associated installation hardware.
• Probe sleeve: Supports the selected probe penetration arrangement.
• O-rings and thread seal: Provide sealing at the designated interfaces. Verify seal condition and installation requirements during maintenance.
• Reverse-mount proximity probe: Supplies the non-contact sensing element within the housing assembly.
• Conduit fittings: The specified package includes a plug, reducer, and cable seal grip with multiple grommet sizes.
• Standoff adapter: Not included in this part-number configuration.

Installation Review | Checks Before Mounting

1. Verify the mounting interface. Confirm the equipment connection accepts 3/4-14 NPT and that the available thread engagement meets the installation drawing.
2. Check probe reach. Compare the 11 in penetration and the housing’s C + D dimensions with the machine geometry, target position, and required probe gap.
3. Confirm cable routing. The included probe cable is 1.0 m. Check that it reaches the intended connection point without excessive tension, tight bends, or contact with hot or moving components.
4. Match the cable seal grip. Select the grommet that fits the actual cable outside diameter. Do not assume one grommet fits every cable size listed.
5. Inspect sealing interfaces. Check O-rings, thread seal, dome cover, and fittings for damage or contamination before installation.
6. Verify area approval. Confirm the probe’s exact approval and the installation requirements for the site. The housing assembly’s option description alone does not establish a complete certified system.
7. Commission the measurement channel. Verify probe, extension cable, Proximitor Sensor, monitor channel, and target geometry as a complete system. Use the applicable Bently Nevada documentation for gap setting and channel checks.

Equipment Fit and Typical Applications

• Steam and industrial turbines: Housing and mounting support for proximity probes used to monitor shaft position or vibration, where the mechanical installation suits the assembly’s dimensions and temperature limits.
• Compressors and large rotating machinery: Probe mounting at designated measurement points, subject to the machine’s mounting design and sensor-system requirements.
• Machinery protection installations: Enclosed probe arrangements connected to compatible Bently Nevada proximity monitoring channels.
• Maintenance retrofits: Replacement of an existing housing assembly when thread, penetration, cable length, fittings, and probe approval match the installed design.

Application boundary: This assembly provides mechanical housing and probe integration. It does not independently provide vibration analysis, alarm logic, or machinery shutdown functions. Those functions depend on the connected probe measurement chain and monitoring system.

Model Selection | Compare the Specified Assembly with the Alternative

The alternative below shares the 24701 housing family and the 3300 XL 8 mm probe option. Its cable-length, adapter, and penetration codes differ. Confirm the manufacturer’s option-code definitions and dimensional drawing before treating it as a drop-in replacement.

Selection recommendation: Use the specified 24701-28-10-00-110-03-02 when the installation requires a 1.0 m probe cable, no standoff adapter, and 11 in penetration. The linked alternative may suit a different reach or mounting arrangement, but its -05, -20, and -040 options must be verified against the approved drawing. Do not substitute based only on the shared family and probe-option codes.

Global PLC Spare HUB Review | Practical Diagnostics

Global PLC Spare HUB’s Insight: Before removing a housing, document its mounting orientation, penetration, cable route, fitting arrangement, and probe identification. During replacement, compare the complete suffix string and physical dimensions. After installation, validate the proximity channel using the site’s commissioning procedure rather than relying on a mechanical fit alone.

Supply Terms | Warranty and Shipping

• Condition: New & Original in Factory Packing
• Factory warranty: 12 months
• Shipping carriers: FedEx, UPS, and DHL
• Quotation support: Provide the complete part number and installation details to help verify configuration.
• Dispatch timing: Confirm current stock and dispatch schedule when requesting a quotation.

Frequently Asked Questions

Q1. Does this assembly include the proximity probe, or is it only an enclosure?

A. The supplied description states that the housing assembly includes a reverse-mount proximity probe. Confirm the exact probe option and approval marking on the delivered configuration.

Q2. How do I determine whether the 11 in penetration is correct for my machine?

A. Compare the penetration and C + D dimensions with the machine drawing, target location, and required probe position. If the installation uses a different datum or adapter, have the dimensions reviewed before purchase.

Q3. Can I reuse the existing conduit fittings when replacing the housing?

A. Reuse only if the fittings match the new assembly’s ports, cable diameter, sealing method, and site requirements. Inspect threads, grommets, and sealing surfaces for wear or damage.

Q4. What should I do if the housing fits but the probe cable is too short?

A. Stop before routing the cable under tension. Verify the actual cable-length option and connection layout, then select a documented compatible configuration. Avoid improvised extensions unless the measurement-system design explicitly permits them.

Q5. Which details are most important when choosing between the two listed 24701 assemblies?

A. Prioritize probe penetration, adapter arrangement, cable length, mounting thread, and required approvals. Confirm these against the machine drawing and connected monitoring system; the shared 24701 and probe-option codes alone are not enough.

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