Bently Nevada 330901-00-15-70-02-05 – Eddy-Current Proximity Probe | 3300 NSv Platform
Engineering Background: The 3300 NSv Series represents Bently Nevada’s (Baker Hughes) next-generation non-contacting vibration measurement platform, engineered for continuous shaft displacement and vibration monitoring in rotating machinery. The 330901 probe series is the field-proven workhorse deployed across turbines, compressors, pumps, and motors in power generation, oil & gas, and petrochemical industries worldwide.
Product Positioning: The 330901-00-15-70-02-05 is a 5 mm tip diameter eddy-current proximity probe with a 2-metre (70-inch) integral cable, designed for direct integration with 3300 NSv proximitor/oscillator modules. It delivers sub-micron resolution shaft displacement data to plant DCS, BPCS, and safety instrumented systems (SIS) — making it the preferred choice for API 670-compliant machinery protection systems.
Complete Technical Specifications
| Part Number | 330901-00-15-70-02-05 |
| Series / Platform | Bently Nevada 3300 NSv |
| Sensing Technology | Eddy-Current (Non-contacting) |
| Probe Tip Diameter | 5 mm (0.197 in) |
| Integral Cable Length | 2 m (70 in) |
| Linear Range | 0.25 mm – 2.25 mm (10 mil – 90 mil) |
| Scale Factor | 7.87 V/mm (200 mV/mil) nominal |
| Frequency Response | DC to 10,000 Hz (–3 dB) |
| Operating Temperature | –35 °C to +177 °C (–31 °F to +350 °F) |
| Target Material | AISI 4140 steel (standard) |
| Connector Type | Integral coaxial, reverse-polarity protected |
| Housing Material | 316 Stainless Steel |
| Ingress Protection | IP67 (probe body) |
| Approvals | CE, ATEX, IECEx |
| Compatible Proximitor | 3300 XL NSv Proximitor (330180 series) |
| Weight | ~20 g (probe body only) |
| Country of Origin | USA |
Proven Application Environments
- Steam & Gas Turbines — radial shaft vibration and axial position monitoring per API 670
- Centrifugal Compressors — continuous rotor orbit and eccentricity measurement
- Boiler Feed Pumps & Cooling Water Pumps — bearing journal displacement trending
- Electric Motors (>500 kW) — shaft relative vibration in sleeve-bearing machines
- Gearboxes & Expanders — high-speed shaft monitoring in petrochemical trains
- Hydro Turbines — low-speed, large-diameter shaft displacement
Engineering Advantages
- NSv Architecture — eliminates driver-probe matching errors; plug-and-play replacement within the 3300 NSv ecosystem
- Extended Temperature Range — rated to +177 °C, suitable for hot-section turbine bearing pedestals
- High Frequency Response (DC–10 kHz) — captures sub-synchronous instabilities, oil whirl, and blade-pass frequencies
- 316 SS Housing — corrosion-resistant in H₂S-rich, wet gas, and offshore environments
- Integral Cable Design — eliminates field-assembled connector joints; reduces signal noise
- API 670 / ISO 10816 Compliant — accepted by major EPC contractors for machinery protection systems
System Architecture & Signal Flow
The 330901-00-15-70-02-05 operates as the sensing element in a three-component eddy-current measurement chain:
- Probe (330901-00-15-70-02-05) — generates a high-frequency electromagnetic field; detects target distance via impedance change
- Extension Cable — 3300 XL 11 mm series; transmits the raw oscillator signal with controlled impedance
- Proximitor / Oscillator (330180 series) — demodulates the signal; outputs DC voltage proportional to gap distance (–24 VDC supply, outputs –2 VDC to –18 VDC)
The DC output feeds directly into Bently Nevada 3500 Series rack monitors, third-party vibration monitors, or plant DCS analog input cards.
Sourcing & Quality Verification
- All units sourced from authorized distributors or verified OEM surplus channels
- Each probe undergoes incoming inspection: visual, dimensional, and electrical continuity checks
- Calibration traceability available upon request (NIST-traceable test equipment)
- Original manufacturer documentation and certificates of conformance (CoC) provided where available
- Shelf-life managed: units stored in ESD-safe, climate-controlled warehouse
Procurement Process
- Confirm compatibility — verify your proximitor model and extension cable length against the 3300 NSv system datasheet
- Request a quote — contact [email protected] for volume pricing, lead time, and CoC availability
- Place order — secure checkout via Konmask.com; wire transfer and PayPal accepted for B2B orders
- Shipping — DHL / FedEx Express worldwide; export documentation (HS code 9031.80) included
- After-sales support — 12-month warranty against manufacturing defects; technical support via email or WhatsApp
Technical FAQ
Q: Is the 330901-00-15-70-02-05 interchangeable with the 330901-00-15-05-02-05?
A: No. The cable length suffix (-70 vs. -05) changes the total system electrical length, which affects proximitor calibration. Always match the complete part number.
Q: Can this probe be used with a 3300 XL 8 mm proximitor?
A: No. The 330901 is an 11 mm probe series and requires a compatible 11 mm NSv proximitor (e.g., 330180). Using an 8 mm proximitor will result in incorrect scale factor and potential system fault.
Q: What is the recommended gap voltage at installation?
A: –10.0 VDC ± 0.5 VDC (approximately 1.0 mm / 40 mil gap) for standard AISI 4140 targets, per Bently Nevada installation guidelines.
Q: Do you provide ATEX/IECEx certificates?
A: Yes, upon request. Please specify the hazardous area classification (Zone 1/2, Gas Group, Temperature Class) when ordering.
Q: Can Konmask supply the complete 3300 NSv measurement chain?
A: Yes. Contact us with your system requirements and we will provide a matched, tested assembly.
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