Model: 102044-00-48-10-05
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Technical Dossier
The Bently Nevada 102044 Series proximity probes are eddy-current, non-contact displacement transducers engineered for continuous vibration and position monitoring in rotating machinery. Deployed across petrochemical refineries, nuclear power stations, LNG terminals, offshore platforms, and heavy industrial compressor trains, the 102044 Series forms a core sensing layer within Bently Nevada’s 3300 and 3500 machinery protection systems. These probes operate on the eddy-current principle: a high-frequency oscillator drives a coil at the probe tip, and any conductive target within range induces eddy currents that alter the coil’s impedance — producing a DC voltage output linearly proportional to the gap distance. The 102044 Series is rated for continuous operation in environments with high vibration, chemical exposure, and elevated temperatures, making it the standard reference transducer for API 670-compliant machinery protection installations worldwide.
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The 102044 Series was introduced as part of Bently Nevada’s second-generation eddy-current probe platform, succeeding the earlier 7200 Series probes. The transition addressed three primary engineering limitations of the prior generation: cable impedance sensitivity, temperature coefficient drift, and connector reliability in high-humidity environments. The 102044 standardized on a 5-meter (standard) and 9-meter (extended) integral cable configuration, with a coaxial cable terminated in a MIL-spec connector compatible with the 3300 XL 8mm and 3500/42M proximity I/O modules. The probe tip diameter of 8mm became the dominant standard for shaft vibration measurement on turbines, compressors, and pumps operating under API 670 specifications. Later revisions introduced extended temperature ratings (up to 177°C at the probe tip) and improved EMI shielding for installations adjacent to variable frequency drives. The 102044 Series is now classified as a mature product line; Bently Nevada (a Baker Hughes company) continues to supply replacement units, but the primary demand driver is lifecycle maintenance of installed base rather than new greenfield deployments. For new installations, the 330100 and 330500 Series represent the current-generation equivalents, though the 102044 remains the specified replacement part in the majority of existing machinery protection system documentation.
The following SKUs represent the documented 102044 Series proximity probe configurations, differentiated by cable length, connector type, and temperature rating. Each model is a direct-mount eddy-current probe compatible with Bently Nevada 3300 and 3500 Series monitor systems.
102044-00-48-10-05: 8mm probe, 5m cable, standard temp, MIL connector, 3300/3500 compatible
102044-00-48-10-09: 8mm probe, 9m cable, standard temp, MIL connector, extended reach installations
102044-00-48-10-15: 8mm probe, 15m cable, standard temp, for remote monitor panel layouts
102044-00-48-20-05: 8mm probe, 5m cable, high-temp rating (177°C), MIL connector
102044-00-48-20-09: 8mm probe, 9m cable, high-temp rating, extended reach, hot section turbines
102044-00-48-20-15: 8mm probe, 15m cable, high-temp, long-run installations in power plants
102044-00-48-30-05: 8mm probe, 5m cable, armored cable jacket, abrasion-resistant environments
102044-00-48-30-09: 8mm probe, 9m cable, armored jacket, compressor trains with mechanical hazards
102044-00-48-40-05: 8mm probe, 5m cable, ATEX/IECEx certified, Zone 1 hazardous area use
102044-00-48-40-09: 8mm probe, 9m cable, ATEX/IECEx certified, Zone 1, extended reach
102044-00-48-50-05: 8mm probe, 5m cable, stainless steel body, corrosive atmosphere rating
102044-00-48-50-09: 8mm probe, 9m cable, stainless steel body, offshore/marine environments
102044-00-48-60-05: 8mm probe, 5m cable, integral junction box termination, panel-mount systems
102044-00-48-60-09: 8mm probe, 9m cable, integral junction box termination, distributed I/O racks
102044-00-48-70-05: 8mm probe, 5m cable, dual-output configuration, redundant monitoring loops
102044-00-48-70-09: 8mm probe, 9m cable, dual-output, redundant 3500/42M channel pairs
102044-00-48-80-05: 8mm probe, 5m cable, low-profile body, restricted access bearing housings
102044-00-48-80-09: 8mm probe, 9m cable, low-profile body, tight-clearance turbine pedestals
DriveKNMS maintains a dedicated inventory of 102044 Series proximity probes, including configurations that have been discontinued from standard Bently Nevada distribution channels. As the installed base of 3300 and 3500 Series machinery protection systems ages, procurement teams at refineries, power utilities, and chemical plants increasingly require exact-match replacement probes to avoid recalibration of existing monitor channels. Substituting a non-identical probe body or cable length requires re-gapping and re-verification of the entire transducer system — a process that demands a machinery shutdown window. DriveKNMS eliminates this risk by supplying original-specification 102044 units sourced from verified OEM overstock, decommissioned plant inventories, and authorized distributor liquidations. All units are individually serialized, and full traceability documentation is available upon request. For long-term maintenance contracts requiring scheduled probe replacement at fixed intervals, DriveKNMS offers blanket order agreements with guaranteed lead times.
Each 102044 Series probe processed through DriveKNMS undergoes a structured verification protocol before dispatch. Gap voltage linearity is tested across the full measurement range (0–2.54 mm standard) using a calibrated target plate and a Bently Nevada 3300 XL proximitor as the reference oscillator/demodulator. Output sensitivity is verified at the nominal –200 mV/mil (–7.87 V/mm) scale factor. Cable continuity and insulation resistance are measured at both the probe tip and the MIL connector termination. Connector pin integrity is inspected under magnification for corrosion, deformation, or contamination. Probes exhibiting any deviation from the published sensitivity tolerance (±1%) are quarantined and not released for sale. A calibration data sheet is issued with each unit, documenting the measured gap-voltage curve and the test equipment serial numbers used. Units destined for ATEX-rated installations are additionally verified for enclosure integrity and label compliance prior to shipment.
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© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.
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