Bently Nevada 330101-10-27-05-02-00 – Eddy Current Proximity Probe | 3300 XL 8mm Platform
Engineering Background
The Bently Nevada 3300 XL Series represents the industry benchmark for non-contact shaft vibration and position measurement in rotating machinery. Developed by Baker Hughes (Bently Nevada), the 3300 XL system is deployed globally in turbines, compressors, pumps, and motors where continuous, high-accuracy displacement monitoring is mission-critical. The 8mm probe diameter is the most widely specified form factor in the series, offering an optimal balance between sensitivity, gap range, and mechanical footprint.
Product Positioning
Part number 330101-10-27-05-02-00 is a standard 8mm eddy current proximity probe with a 10mm cable length extension, 27-inch (686mm) armored cable, 5mm linear measurement range, and -24 VDC bias output. It is designed for direct integration with Bently Nevada 3300 XL proximitor/seismometer monitors and is fully interchangeable within the 3300 XL ecosystem. Procurement engineers specify this part for OEM replacement, system expansion, and spare-parts inventory in API 670-compliant machinery protection systems.
Complete Technical Specifications
| Part Number | 330101-10-27-05-02-00 |
| Series / Platform | Bently Nevada 3300 XL |
| Probe Diameter | 8 mm |
| Sensing Technology | Eddy Current (Non-contact) |
| Cable Length | 27 inches (686 mm) armored integral cable |
| Extension Cable | 10 mm (code: -10) |
| Linear Range | 5 mm (0.2 inch) — code: -05 |
| Bias Voltage Output | -24 VDC nominal (code: -02) |
| Scale Factor | 200 mV/mil (7.87 V/mm) typical |
| Frequency Response | DC to 10,000 Hz (–3 dB) |
| Operating Temperature | -35°C to +177°C (probe tip) |
| Target Material | Steel, stainless steel, iron-based alloys |
| Connector Type | Standard BN coaxial connector (code: -00) |
| Housing Material | 316 Stainless Steel |
| IP Rating | IP67 (probe body) |
| Compliance | API 670, CE |
| Compatible Monitor | Bently Nevada 3300 XL Proximitor / 3500 Series |
| Weight | Approx. 40 g |
| Country of Origin | United States |
Proven Application Environments
- Steam & Gas Turbines — shaft radial vibration and axial position monitoring per API 670
- Centrifugal Compressors — rotor dynamic displacement in high-pressure process gas service
- Pumps & Fans — bearing journal orbit measurement and imbalance detection
- Electric Motors (>500 kW) — continuous shaft proximity monitoring in critical drive trains
- Gearboxes — gear mesh frequency and shaft runout analysis
- Expanders / Turboexpanders — cryogenic and high-speed rotor position feedback
Engineering Advantages
- Non-contact measurement — zero mechanical wear, no lubrication required, unlimited service life under normal conditions
- Wide frequency bandwidth — DC to 10 kHz captures sub-synchronous, synchronous, and high-frequency rotor events
- High temperature tolerance — probe tip rated to 177°C for hot-section turbine and compressor installations
- 316 SS housing — corrosion-resistant in H₂S, steam, and process chemical environments
- Direct 3300 XL system compatibility — plug-and-play replacement; no recalibration of monitor required when replacing like-for-like
- API 670 compliant — meets machinery protection standard for critical rotating equipment
System Architecture & Signal Flow
The 330101-10-27-05-02-00 probe operates as the sensing element in a three-component eddy current measurement chain:
- Probe (330101-10-27-05-02-00) — generates a high-frequency electromagnetic field at the tip; eddy currents induced in the target shaft modulate the field as a function of gap distance.
- Extension Cable (330130 series) — transmits the modulated RF signal from probe to proximitor with controlled impedance; total system cable length must match proximitor calibration.
- Proximitor / Seismometer (3300 XL) — demodulates the RF signal and outputs a DC voltage proportional to gap (scale factor: 200 mV/mil). Output feeds directly to Bently Nevada 3500 or 3300 monitor cards for alarm, trip, and trending.
Note: Total probe + extension cable length must be verified against the proximitor’s calibrated range. Mixing cable lengths from different calibration sets will introduce measurement error.
Sourcing & Quality Verification
- All units sourced through verified industrial automation supply channels with full traceability
- Each probe inspected for physical integrity: connector condition, cable armor, probe tip, and part number label verification
- Functional verification available on request (gap vs. output voltage sweep test report)
- Packaging: original OEM packaging where available; otherwise anti-static protective packaging with part number labeling
- Certificate of conformance (CoC) available upon request for regulated industries
Procurement Process
- Lead Time: In-stock units ship within 1–3 business days; contact us for volume order scheduling
- MOQ: 1 piece (no minimum order quantity)
- Payment: T/T, PayPal, credit card, and trade finance options available for qualified buyers
- Export: Ships worldwide; export documentation (commercial invoice, packing list, COO) provided
- Returns: 30-day return window for unused, uninstalled units in original condition
- RFQ: For bulk orders (>5 units) or system-level procurement, submit RFQ to [email protected]
Technical FAQ
Q: Is the 330101-10-27-05-02-00 compatible with the Bently Nevada 3500 monitor system?
A: Yes. The 3300 XL probe series is fully compatible with 3500 series monitor cards when used with the correct proximitor. Verify the proximitor part number matches the probe/cable system calibration.
Q: Can this probe be used with non-Bently Nevada monitors?
A: The probe outputs a standard -24V bias eddy current signal. It can interface with third-party monitors that accept this signal standard, but system calibration must be independently verified. Bently Nevada does not certify third-party compatibility.
Q: What is the maximum shaft speed this probe can monitor?
A: The 10 kHz frequency response supports shaft speeds up to approximately 600,000 RPM for 1× vibration detection. Practical limits are determined by the monitor card’s input bandwidth.
Q: How do I verify the probe is functioning correctly on-site?
A: Use a Bently Nevada TK-3 or equivalent proximitor tester. With the probe connected to its proximitor and powered at -24 VDC, the output should read approximately -10.4 VDC at the nominal 1.0 mm gap (200 mV/mil scale factor). Deviation >5% indicates probe or cable fault.
Q: What is the difference between part numbers 330101-10-27-05-02-00 and 330101-10-27-10-02-00?
A: The fifth segment (-05 vs. -10) denotes the linear measurement range: -05 = 5 mm range; -10 = 10 mm range. Select based on your proximitor calibration and required gap measurement window.
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