Bently Nevada 330171-00-20-05-02-00 – 8mm Eddy Current Proximity Probe | 3300 XL Series Platform
Engineering Background
The Bently Nevada 3300 XL proximity probe system is the global benchmark for continuous, non-contact shaft vibration and position measurement in rotating machinery. Developed by Baker Hughes (Bently Nevada), the 3300 XL platform has been deployed across tens of thousands of turbomachinery installations worldwide — from steam turbines and gas compressors to centrifugal pumps and gearboxes. The 330171 series represents the standard 8mm probe configuration, engineered for demanding industrial environments where measurement accuracy and long-term reliability are non-negotiable.
Product Positioning
The 330171-00-20-05-02-00 is a factory-configured, 8mm eddy current proximity probe designed for direct integration into Bently Nevada 3300 XL monitoring systems. It delivers precise radial vibration, axial position, and differential expansion measurements on rotating shafts — providing the critical data that plant engineers rely on for predictive maintenance, machinery protection, and API 670 compliance. This probe is the preferred choice for procurement engineers sourcing OEM-equivalent replacement parts for existing 3300 XL installations.
Complete Technical Specifications
- Part Number: 330171-00-20-05-02-00
- Manufacturer: Bently Nevada (Baker Hughes)
- Series / Platform: 3300 XL Proximity Transducer System
- Probe Type: Eddy Current (Non-Contact) Proximity Probe
- Probe Diameter: 8 mm
- Cable Length: 5.0 m (integral cable, per part number configuration)
- Connector Type: Standard BNC / per system configuration
- Measurement Range: 0.25 mm – 2.25 mm (linear range, typical for 8mm probe)
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Frequency Response: DC to 10,000 Hz
- Operating Temperature: -35°C to +177°C (probe body)
- Supply Voltage: -24 VDC (via Proximitor® driver)
- Output Signal: DC voltage proportional to gap distance
- Target Material: AISI 4140 steel or equivalent (per Bently Nevada calibration standard)
- Ingress Protection: Suitable for oil mist, high-humidity, and washdown environments
- Compliance: API 670 (Machinery Protection Systems), CE
- Weight: Approx. 1,100 g (probe + cable assembly)
- Country of Origin: USA
Proven Application Environments
- Steam turbines and gas turbines (power generation)
- Centrifugal and axial compressors (oil & gas, petrochemical)
- Centrifugal pumps and boiler feed pumps
- Gearboxes and expanders
- Fans, blowers, and rotating equipment in process industries
- API 670-compliant machinery protection systems
- Retrofit and replacement in existing 3300 XL installations
Engineering Advantages
- Non-contact measurement: Zero mechanical wear, no influence on shaft dynamics
- Wide frequency response (DC–10 kHz): Captures both slow-roll runout and high-frequency vibration events
- Factory-calibrated: Matched to Bently Nevada Proximitor® drivers for system-level accuracy
- Robust construction: Stainless steel housing, hermetically sealed tip, resistant to oil, steam, and chemical exposure
- Direct OEM replacement: Drop-in compatibility with existing 3300 XL wiring, conduit, and Proximitor® drivers — no recalibration of the monitoring system required
- API 670 compliance: Meets international standards for machinery protection in critical rotating equipment
System Architecture & Signal Flow
The 330171-00-20-05-02-00 operates as part of the Bently Nevada 3300 XL three-component transducer system:
- Proximity Probe (330171 series): Generates an eddy current field at the probe tip; gap changes modulate the oscillator circuit.
- Extension Cable (330130 series): Transmits the high-frequency signal from probe to Proximitor® driver with minimal signal loss.
- Proximitor® Driver (3300 XL series): Demodulates the signal and outputs a calibrated DC voltage (–24 VDC supply, output range typically –2 VDC to –18 VDC) to the monitoring system.
The output signal is directly compatible with Bently Nevada 3500 series rack monitors, System 1® software, and third-party DCS/PLC inputs configured for 4–20 mA or voltage inputs via signal conditioners.
Sourcing & Quality Verification
- All units sourced through verified industrial automation supply channels
- Each probe inspected for physical integrity, connector condition, and cable continuity prior to shipment
- Original manufacturer labeling and part number markings preserved
- Traceability documentation available upon request for critical plant applications
- Konmask.com specializes in industrial automation components — PLC modules, DCS parts, and instrumentation — for B2B procurement engineers globally
Procurement Process
- Confirm part number 330171-00-20-05-02-00 against your existing system documentation or Bently Nevada wiring diagram
- Verify cable length and connector configuration match your installation requirements
- Add to cart or contact [email protected] for volume pricing, lead time, and export documentation
- Receive factory-labeled unit with packing list; install per Bently Nevada installation manual TDI-8476
Technical FAQ
Q: Is this probe compatible with the Bently Nevada 3500 monitoring rack?
A: Yes. When paired with the correct 3300 XL Proximitor® driver and extension cable, the output signal is fully compatible with 3500 series monitor inputs.
Q: Can this probe be used with non-Bently Nevada drivers?
A: The probe is optimized for use with Bently Nevada Proximitor® drivers. Use with third-party drivers requires independent calibration verification and is not recommended for API 670-critical applications.
Q: What shaft materials are compatible?
A: The probe is factory-calibrated for AISI 4140 steel. Other ferromagnetic or conductive target materials (e.g., 17-4 PH stainless, Inconel) will require recalibration per Bently Nevada application note.
Q: Is a calibration certificate available?
A: Traceability and inspection documentation can be provided upon request. Contact [email protected] with your order details.
Q: What is the lead time?
A: In-stock units typically ship within 1–3 business days. Contact us for current availability and expedited shipping options.
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