Technical Specifications Breakdown
Key parameters for the 24701-28-10-00-110-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 24701 - Proximity Probe Housing Assemblies |
| Probe Option | 28 = 3300 XL 8mm, with approval option |
| Probe Cable Length | 10 = 39 in (1.0 m) |
| Probe Penetration | 110 - 11 in |
| Mounting Thread | 02 - 3/4-14 NPT |
| Body Material | 303 stainless steel |
| Sleeve Material | 304 stainless steel |
| Weight (typical, without fittings) | 1.8 kg (4.1 lb) |
Industry Applications and Operational ROI
Steam Turbine Shaft Monitoring
In power generation, steam turbine bearing clearance must be monitored continuously. The 11-inch probe penetration of this housing assembly allows the probe to reach the target shaft surface through thick bearing housings. The 303 stainless steel body resists corrosion from steam and moisture, extending service life and reducing replacement frequency.
Centrifugal Compressor Protection
Oil and gas facilities rely on centrifugal compressors for critical processes. The 3/4-14 NPT mounting thread and included fittings (one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches) enable straightforward installation into existing conduit systems. This compatibility minimizes retrofitting costs and downtime.
Pump Vibration Monitoring
For large industrial pumps, the 3300 XL 8mm probe housed in this assembly delivers reliable displacement data. The 1.0 m probe cable length is suitable for close-coupled installations where the monitor is nearby. Using the correct housing assembly prevents probe damage from process fluids and mechanical impact.

Installation and Setup Guidance
Mount the housing assembly using the 3/4-14 NPT thread into a compatible port on the machine casing. Ensure the probe penetration of 11 inches aligns with the target shaft clearance. The maximum (C) + (D) dimension with visible probe (P/N and S/N) is 17.0 in (43.18 mm); the overall maximum (C) + (D) dimension is 29.2 in (74.2 mm). Verify that the probe tip does not contact the shaft during rotation. Use the supplied cable seal grip with the appropriate grommet for your cable diameter to maintain environmental sealing.
Maintenance and Reliability
Periodically inspect the dome cover and O-rings for signs of wear or contamination. The 304 stainless steel sleeve resists corrosion, but the assembly should be kept free of debris. No internal disassembly is required for routine checks. If the probe or cable is damaged, replace the entire assembly to maintain calibration integrity.
Preventing Vibration Monitoring Failures with Robust Probe Housing
Unplanned machine downtime often starts with a single point of failure in the vibration monitoring chain. The Bently Nevada 24701-28-10-00-110-03-02 proximity probe housing assembly addresses this vulnerability directly by providing a rugged, sealed enclosure for the 3300 XL 8mm probe. This assembly ensures consistent, accurate shaft displacement measurements in harsh industrial environments, reducing the risk of false trips and unscheduled maintenance.

Compatibility and Integration
This housing assembly is designed for the 3300 XL 8mm proximity probe system. It integrates with Bently Nevada monitors and rack systems that accept 8mm probe inputs. The included fittings support standard NPT conduit connections, simplifying integration into existing wiring infrastructure.
Selection Guide and Purchasing Advice
When ordering the 24701-28-10-00-110-03-02, confirm that the probe penetration (11 inches) and cable length (1.0 m) match your machine geometry. If you need a different standoff adapter or mounting thread, consult AutoDCSTech for alternative suffix codes. AutoDCSTech stocks this assembly as new and original in factory packing, backed by a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 24701-28-10-00-110-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
