Bently Nevada 31000-28-05-15-026-06-02 – Proximity Probe Housing Assembly | 3300 XL Series Platform
Engineering Background: The Bently Nevada 3300 XL Series represents the industry benchmark for continuous machinery protection and condition monitoring in rotating equipment applications. Developed by Baker Hughes (formerly GE Bently Nevada), this platform is deployed globally across power generation, oil & gas, petrochemical, and heavy industrial facilities where unplanned downtime carries catastrophic operational and financial consequences.
Product Positioning: The 31000-28-05-15-026-06-02 is a precision-engineered Proximity Probe Housing Assembly designed to mechanically protect and accurately position the eddy-current sensing element within the 3300 XL monitoring chain. It ensures repeatable gap calibration, environmental sealing, and structural rigidity under continuous vibration and thermal cycling — critical for reliable shaft displacement and eccentricity measurement on turbines, compressors, pumps, and motors.
Complete Technical Specifications
- Part Number / SKU: 31000-28-05-15-026-06-02
- Manufacturer: Bently Nevada (Baker Hughes)
- Series / Platform: 3300 XL Proximity Transducer System
- Component Type: Proximity Probe Housing Assembly
- Sensing Technology: Eddy-Current (Non-contact)
- Cable Length: 5 m (per part number suffix -15)
- Thread Size: 3/8-24 UNF (standard 3300 XL probe thread)
- Connector Type: Integral coaxial, compatible with 3300 XL extension cables
- Operating Temperature: -35°C to +177°C (probe tip)
- Pressure Rating: Suitable for pressurized bearing housings per OEM specification
- Housing Material: Stainless steel body with PTFE-jacketed cable
- Weight: Approx. 1,200 g (including cable assembly)
- Compliance: CE, ATEX / IECEx compatible configurations available
- Interchangeability: Direct OEM replacement; compatible with 3300 XL monitors and 3500 Series rack systems via appropriate extension cables
Proven Application Environments
- Steam and gas turbine shaft radial vibration monitoring
- Centrifugal compressor rotor displacement measurement
- Boiler feed pump and cooling water pump bearing monitoring
- Gearbox and motor shaft eccentricity detection
- Offshore platform rotating machinery protection systems
- Refinery and petrochemical critical equipment API 670 compliance
Engineering Advantages
- OEM-Identical Performance: Maintains factory-calibrated sensitivity (200 mV/mil, 7.87 V/mm) without field recalibration
- Hermetic Sealing: IP67-rated housing prevents moisture and process fluid ingress in harsh environments
- Vibration Immunity: Rigid stainless housing eliminates probe-tip resonance artifacts in high-vibration machinery bays
- Plug-and-Play Replacement: Identical mechanical and electrical interface to original Bently Nevada assemblies — no monitor reconfiguration required
- Extended Cable Flexibility: Pre-terminated 5 m cable reduces field splicing risk and maintains signal integrity
System Architecture & Signal Flow
The 31000-28-05-15-026-06-02 operates as the sensing element in the standard 3300 XL transducer chain:
Probe (31000 series) → Extension Cable (330130 series) → Proximitor® Sensor (3300 XL 8mm) → 3500 Rack Monitor → DCS / Safety System
The probe tip generates a high-frequency electromagnetic field (1 MHz nominal). As the conductive shaft surface approaches, eddy currents are induced, reducing the oscillator circuit impedance. The Proximitor® converts this impedance change to a DC voltage output (–24 VDC nominal supply), linearly proportional to gap distance. The 31000-28-05-15-026-06-02 housing maintains the probe tip at the correct standoff distance (typically 1.0 mm / 40 mil for optimal linear range) and provides the mechanical reference for gap setting during installation.
Sourcing & Quality Verification
- Source: Konmask.com maintains direct procurement channels with authorized distributors and verified surplus equipment dealers for Bently Nevada components
- Inspection: Each unit undergoes visual inspection, connector integrity check, and cable continuity verification prior to dispatch
- Documentation: Certificate of conformance and original packaging (where available) supplied on request
- Traceability: Batch and serial number records maintained for quality audit purposes
- Warranty: 12-month operational warranty against manufacturing defects
Procurement Process
- Step 1: Confirm part number 31000-28-05-15-026-06-02 against your existing system BOM or Bently Nevada documentation
- Step 2: Submit inquiry or place order via Konmask.com product page or email [email protected]
- Step 3: Receive order confirmation with lead time and shipping options (DHL / FedEx / sea freight available)
- Step 4: Inspection report and shipping documents provided prior to dispatch
- Step 5: Installation support available via email for gap-setting and commissioning queries
Technical FAQ
Q: Is this a genuine Bently Nevada part or an aftermarket equivalent?
A: Konmask.com supplies OEM Bently Nevada components sourced through authorized channels. Please contact us to confirm availability of new vs. certified surplus stock for your specific requirement.
Q: Can this probe be used with the 3500 Series rack?
A: Yes. When paired with the appropriate 3300 XL Proximitor® Sensor and 330130 extension cable, the 31000-28-05-15-026-06-02 is fully compatible with 3500 Series monitoring racks.
Q: What is the standard gap setting for this probe?
A: The recommended installation gap is 1.0 mm (40 mil) for 8 mm probes operating in the linear range of –10 VDC to –18 VDC. Refer to Bently Nevada Installation Manual 141536-01 for detailed procedures.
Q: Do you offer expedited shipping for shutdown/turnaround situations?
A: Yes. Emergency procurement support with same-day dispatch (subject to stock availability) is available. Contact [email protected] with your urgency details.
Q: Can you supply the matching extension cable and Proximitor® Sensor?
A: Yes. Konmask.com stocks complementary 3300 XL system components. Provide your full BOM and we will quote the complete transducer chain.
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