Bently Nevada 31000-16-05-35-026-03-02 – Proximity Probe Housing Assembly | 3300 XL Series
In a high-speed rotating machinery environment — turbines, compressors, pumps — a failed or misaligned proximity probe housing can mean the difference between a controlled shutdown and a catastrophic failure. The housing assembly is not a passive component; it is the mechanical backbone that holds the eddy-current probe at the precise radial gap required for accurate shaft displacement measurement. Without a correctly specified housing, signal integrity collapses, and your condition monitoring system becomes blind.
The Bently Nevada 31000-16-05-35-026-03-02 is a factory-configured Proximity Probe Housing Assembly engineered for the 3300 XL Series monitoring platform — the global standard for machinery protection in oil & gas, power generation, and petrochemical industries. This part number encodes a specific combination of probe length, cable length, thread configuration, and connector type, making it a precision-matched replacement that preserves the calibration integrity of your installed 3300 system.
Complete Technical Specifications
- Part Number: 31000-16-05-35-026-03-02
- Manufacturer: Bently Nevada (Baker Hughes)
- Series: 3300 XL Proximity Transducer System
- Product Type: Proximity Probe Housing Assembly
- Probe Tip Diameter: 8 mm (standard eddy-current)
- Probe Body Thread: M10 × 1 (encoded in part number segment)
- Cable Length: Per part number configuration (extension cable integrated)
- Connector Type: Standard 3300 Series coaxial connector
- Operating Temperature: –35°C to +177°C (probe tip)
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Linear Range: 0.25 mm to 2.54 mm (10 to 100 mil)
- Supply Voltage: –24 VDC (via Proximitor® driver)
- Output: DC voltage proportional to gap distance
- Ingress Protection: Suitable for industrial splash and dust environments
- Weight: Approx. 1,200 g (complete assembly)
- Compliance: API 670 5th Edition compatible
Proven Application Environments
- Steam and gas turbine shaft radial vibration monitoring
- Centrifugal and axial compressor rotor displacement measurement
- Boiler feed pump and reactor coolant pump condition monitoring
- Gearbox and motor shaft eccentricity detection
- Offshore platform rotating equipment protection systems
- LNG liquefaction train machinery protection
- Refinery critical service pump and expander monitoring
Engineering Advantages
- API 670 Compliant: Meets the machinery protection standard mandated for critical rotating equipment in oil & gas facilities worldwide.
- Factory-Calibrated Assembly: Probe, extension cable, and driver are calibrated as a matched system — replacing only the housing assembly with the correct part number preserves system accuracy without field recalibration.
- Eddy-Current Non-Contact Sensing: Zero mechanical wear on the sensing element; suitable for continuous 24/7 operation in harsh environments.
- Wide Temperature Range: Operates reliably from cryogenic-adjacent conditions to high-temperature steam environments.
- Direct 3300 System Compatibility: Plug-and-play replacement for existing 3300 XL installations — no signal conditioning changes required.
- Stainless Steel Construction: Corrosion-resistant housing suitable for wet, humid, and chemically aggressive plant environments.
System Architecture & Signal Flow
The 3300 XL Proximity Transducer System operates as a three-component chain: Probe → Extension Cable → Proximitor® Driver. The housing assembly (31000-16-05-35-026-03-02) integrates the probe body and its mechanical mounting interface. The eddy-current field generated at the probe tip induces currents in the rotating shaft target, and the resulting impedance change is converted by the Proximitor® driver into a DC voltage output (typically –2 VDC at minimum gap to –18 VDC at maximum gap). This signal feeds directly into Bently Nevada 3500 or 3300 rack monitors for real-time vibration, position, and eccentricity measurement.
Compatible system components include:
- Bently Nevada 3300 XL Proximitor® Sensor (driver module)
- Bently Nevada 3500/40M Proximitor®/Seismic Monitor
- Bently Nevada 3500/42M Proximitor®/Seismic Monitor
- Standard 3300 XL extension cables (various lengths)
- Bently Nevada 3500 Rack System (full machinery protection)
Sourcing & Quality Verification
At Konmask.com, every Bently Nevada component undergoes a structured verification process before shipment:
- Part Number Cross-Check: Physical label, packaging, and internal documentation are verified against the ordered part number (31000-16-05-35-026-03-02).
- Visual & Mechanical Inspection: Probe tip, cable jacket, connector pins, and housing threads are inspected for damage, corrosion, or non-conformance.
- Traceability Documentation: Certificate of conformance and original manufacturer documentation provided upon request.
- Secure Packaging: Anti-static, foam-lined packaging with moisture-barrier sealing for international freight.
Procurement Process
- Submit Inquiry: Contact us via the form on this page or email [email protected] with your required quantity and delivery timeline.
- Receive Quotation: Our technical team will confirm availability, lead time, and pricing within 24 business hours.
- Order Confirmation: Approve the proforma invoice and confirm shipping details.
- Shipment & Tracking: Parts are dispatched with full tracking via DHL, FedEx, or UPS Express. Export documentation (commercial invoice, packing list, COO) included.
- After-Sales Support: Our engineers are available for installation guidance and compatibility verification post-delivery.
Technical FAQ
Q: Is 31000-16-05-35-026-03-02 a direct replacement for other 31000-series part numbers?
A: Not necessarily. Each 31000-series part number encodes specific physical parameters (probe length, cable length, thread, connector). Always verify the full part number before ordering to ensure dimensional and electrical compatibility with your installed system.
Q: Can this housing assembly be used with non-Bently Nevada drivers?
A: The 3300 XL probe is optimized for use with Bently Nevada Proximitor® drivers. Use with third-party drivers may result in sensitivity deviation and is not recommended for API 670 critical service applications.
Q: What is the target material requirement for accurate measurement?
A: The standard 3300 XL probe is calibrated for AISI 4140 steel targets. For other target materials (stainless steel, titanium, Inconel), a material correction factor must be applied per Bently Nevada calibration procedures.
Q: Do you supply the complete 3300 XL transducer system (probe + extension + driver)?
A: Yes. Konmask.com stocks individual components and complete matched sets. Contact us with your system configuration for a complete BOM quotation.
Q: What is the typical lead time for this part?
A: In-stock items ship within 3–5 business days. For items requiring sourcing, lead time is typically 2–4 weeks. Contact us for current availability.
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