Bently Nevada 330905-00-25-05-01-05 NSv Proximity Probe | Eddy Current Vibration Sensor | NSv Series Platform
Engineering Background
The Bently Nevada NSv (Non-contacting vibration) Proximity Probe system is the industry benchmark for rotating machinery health monitoring. Engineered for continuous, real-time shaft vibration and position measurement, the NSv series leverages eddy current technology to deliver micron-level resolution without physical contact — eliminating wear and enabling permanent installation in the most demanding industrial environments.
Product Positioning
The 330905-00-25-05-01-05 is a factory-configured NSv proximity probe assembly designed for integration with Bently Nevada 3500 Series and System 1 condition monitoring platforms. It is the preferred choice for procurement engineers specifying turbine, compressor, pump, and motor shaft monitoring systems where API 670 compliance is mandatory.
Complete Technical Specifications
| Part Number / SKU | 330905-00-25-05-01-05 |
| Brand / Manufacturer | Bently Nevada (Baker Hughes) |
| Series / Platform | NSv Proximity Probe System |
| Sensing Technology | Eddy Current (Non-contacting) |
| Probe Cable Length | 25 mm (integral cable) |
| Extension Cable Length | 5 m |
| Output Signal | -18 VDC nominal (with matched driver) |
| Frequency Response | DC to 10,000 Hz |
| Linear Range | Approx. 0.25 mm – 2.54 mm (target material dependent) |
| Target Material | AISI 4140 steel (standard); other alloys available |
| Operating Temperature | -35°C to +177°C (probe tip) |
| Ingress Protection | IP67 (probe body) |
| Connector Type | Standard BN coaxial connector |
| Weight | 1,470 g (complete assembly) |
| Compliance / Standards | API 670, CE, RoHS |
| Compatible Systems | Bently Nevada 3500 Series, System 1, 1900/65A |
| Country of Origin | USA |
Proven Application Environments
- Steam & Gas Turbines — Shaft radial vibration, axial position, and differential expansion monitoring
- Centrifugal Compressors — Real-time rotor orbit and eccentricity measurement
- Pumps & Motors — Continuous bearing clearance and shaft runout surveillance
- Gearboxes — Gear mesh frequency and lateral vibration detection
- Petrochemical & Refinery Plants — API 670-compliant machinery protection systems
- Power Generation — Combined cycle and nuclear auxiliary machinery monitoring
Engineering Advantages
- Non-contacting measurement — Zero mechanical wear; suitable for permanent installation on high-speed rotating shafts
- High-frequency bandwidth — DC to 10 kHz response captures sub-synchronous, synchronous, and super-synchronous vibration components
- Factory-matched assembly — Probe, extension cable, and driver are calibrated as a matched set for guaranteed sensitivity accuracy (±1%)
- Extreme environment rated — Operates reliably in high-temperature, high-pressure, and chemically aggressive atmospheres
- API 670 compliant — Meets the international standard for machinery protection systems in oil & gas and petrochemical industries
- Plug-and-play compatibility — Direct replacement for legacy 3300 XL series probes in existing Bently Nevada installations
System Architecture & Signal Flow
The NSv proximity probe system operates as a three-component matched set:
- Probe (330905-00-25-05-01-05) — Generates a high-frequency electromagnetic field at the probe tip. Eddy currents induced in the rotating target shaft modulate the field, producing a voltage output proportional to the gap distance.
- Extension Cable (5 m) — Low-loss coaxial cable transmits the modulated signal from the probe to the driver/oscillator with minimal attenuation.
- Driver / Oscillator (ordered separately) — Demodulates the signal and outputs a calibrated DC voltage (typically -18 VDC at mid-range gap) to the monitoring rack (e.g., Bently Nevada 3500/40M or 3500/42M modules).
Signal output is then processed by the 3500 Series rack for alarm, trip, and data acquisition functions within System 1 software.
Sourcing & Quality Verification
- All units sourced through authorized industrial distribution channels with full traceability documentation
- Each assembly inspected for physical integrity, connector condition, and cable continuity prior to dispatch
- Original manufacturer packaging and labeling preserved where available
- Certificate of Conformance (CoC) and test reports available upon request
- Serialized units traceable to Bently Nevada factory records
Procurement Process
- Confirm part number — Verify 330905-00-25-05-01-05 against your BOM or existing installation drawing
- Specify matched driver — Confirm driver/oscillator model (e.g., 330180 or 330130 series) for system compatibility
- Request quotation — Contact [email protected] for volume pricing, lead time, and documentation package
- Place order — Standard lead time: 3–7 business days for in-stock units; expedited shipping available
- Receive & verify — Inspect against packing list; CoC and calibration data included in shipment
Technical FAQ
Q: Is the 330905-00-25-05-01-05 a direct replacement for the 3300 XL 8mm probe?
A: Yes, the NSv series is designed as a backward-compatible upgrade for 3300 XL installations. Verify mounting thread and gap range with your installation drawing before replacement.
Q: What driver is required for this probe?
A: This probe requires a matched Bently Nevada NSv driver/oscillator. Common compatible drivers include the 330180-X1-05 and 330130-040-01-00. Contact us to confirm the correct driver for your system.
Q: Can this probe be used with non-Bently Nevada monitoring systems?
A: The probe outputs a standard eddy current signal; however, sensitivity calibration is optimized for Bently Nevada drivers. Use with third-party systems requires re-calibration and is not recommended for API 670 applications.
Q: What is the warranty on this unit?
A: Konmask provides a 90-day functional warranty on all industrial automation components. OEM warranty terms apply where original factory seal is intact.
Q: Do you provide expedited shipping for shutdown/turnaround situations?
A: Yes. Contact [email protected] or call +0086 19859288691 for emergency procurement support.
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Contact: [email protected] | +0086 19859288691
