Model: 24701-28-05-30-057-04-02
Product Overview
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Datasheet Preview
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Commercial Path
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Technical Dossier
The Bently Nevada 24701 Series Proximity Probe Housing Assemblies represent a foundational component within the 3300 and 7200 Series continuous machinery monitoring ecosystems. Deployed across global heavy industry — including petrochemical refineries, nuclear power stations, offshore platforms, and rotating equipment facilities — the 24701 housing assemblies provide the mechanical interface between the eddy-current proximity probe tip and the monitored machine surface. Their primary function is to maintain precise probe-to-target gap geometry under sustained vibration, thermal cycling, and process fluid exposure. Installations span turbine trains, compressor strings, pump sets, and motor-driven equipment where API 670 compliance is mandatory. The 24701 series is engineered to accept standard 5mm and 8mm probe bodies, with housing configurations covering straight, right-angle, and extended-reach geometries to accommodate restricted access machine casings common in chemical plants and power generation facilities.
The 24701 housing series was introduced as a companion component to Bently Nevada's early eddy-current probe systems, predating the formalized 3300 Series platform. Early-generation housings were machined from 316 stainless steel with NPT-threaded bodies designed for direct pipe-mount installation. As the 3300 XL and 3500 monitoring platforms matured through the 1990s and 2000s, the 24701 series was progressively updated to accommodate higher-temperature probe cables, improved EMI shielding requirements, and metric thread variants for European and Asian plant standards. The introduction of the 7200 Series extended-range probes required corresponding housing geometry updates, resulting in the current multi-suffix part numbering convention where each positional suffix encodes probe body diameter, thread type, housing length, cable exit orientation, and material specification. Legacy 24701 assemblies remain mechanically compatible with current Bently Nevada drivers and monitors, making them a long-term spares requirement for plants that have not undergone full system modernization. The transition from NPT to metric threading and from single-cable to armored-cable configurations represents the primary compatibility consideration when cross-referencing obsolete part numbers to current equivalents.
The following SKUs represent verified, commonly stocked configurations within the Bently Nevada 24701 Proximity Probe Housing Assembly series, organized by housing geometry and probe compatibility:
Straight-Body Housing Assemblies (Standard 5mm Probe)
Straight-Body Housing Assemblies (Standard 8mm Probe)
Right-Angle Housing Assemblies
Metric Thread Variants (European/Asian Plant Standard)
Each 24701 housing assembly processed through DriveKNMS undergoes a structured inspection protocol before dispatch. Dimensional verification confirms probe bore diameter, thread pitch and depth, housing length, and cable exit geometry against OEM engineering drawings. Material certification is reviewed for 316 stainless steel compliance, with hardness testing applied to housings sourced from non-OEM channels. Cable continuity and insulation resistance testing is performed on all assemblies with integrated cable sections. Thread gauge inspection covers both the housing body thread and the locknut interface to confirm correct probe seating depth. Assemblies are pressure-tested where housing design includes sealed cable gland entries. All units are individually tagged with inspection records and shipped with full traceability documentation compatible with API 670 maintenance records requirements.
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