Vibration Monitoring Solution – Bently Nevada 330903-00-15-05-02-00 | 3300 NSv Series
Where This Product Is Used
The Bently Nevada 330903-00-15-05-02-00 is a 3300 NSv series eddy-current proximity probe engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion in rotating machinery. Typical deployment environments include:
- Steam & Gas Turbines – real-time shaft orbit and vibration trending to prevent catastrophic failure
- Centrifugal & Axial Compressors – API 670-compliant radial vibration monitoring at bearing housings
- Boiler Feed Pumps & Large Pumping Stations – early detection of rotor imbalance and misalignment
- Gearboxes & Expanders – high-frequency response for gear-mesh and blade-pass frequency capture
- Marine Propulsion Systems – corrosion-resistant installation in high-humidity machinery spaces
- Power Generation (Nuclear, Fossil, Hydro) – safety-critical vibration interlock loops
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330903-00-15-05-02-00 |
| Series | 3300 NSv (Non-Standard Voltage) |
| Probe Type | Eddy-Current Proximity Probe |
| Cable Length | 5 m (integral cable) |
| Tip Diameter | 8 mm (standard) |
| Measurement Range | 0 – 2 mm (0 – 80 mil) |
| Sensitivity | 7.87 V/mm (200 mV/mil) nominal |
| Frequency Response | DC – 10 kHz (–3 dB) |
| Operating Temperature | –35 °C to +177 °C (–31 °F to +351 °F) |
| Supply Voltage | –24 VDC (via Proximitor® driver) |
| Output Voltage | –2 VDC to –18 VDC (linear range) |
| Target Material | AISI 4140 steel (standard); other alloys with calibration |
| Connector | Integral coaxial, armored cable |
| Weight | ~40 g |
| Ingress Protection | IP67 (probe body) |
Why Engineers Specify This Model
- NSv Output Compatibility – Non-Standard Voltage output integrates directly with legacy 3300 Proximitor® drivers and modern 3500 rack I/O without signal conditioning
- Armored Integral Cable – factory-terminated, shielded coaxial cable eliminates field-splice signal degradation common with extension-cable assemblies
- Wide Temperature Envelope – rated to 177 °C, suitable for hot-section turbine bearing pedestals without derating
- Proven Linearity – ±0.5% full-scale linearity ensures accurate orbit plots and Keyphasor® synchronization
- Drop-in Replacement – identical form factor to 330900 / 330901 series; no re-calibration of existing Proximitor® required when target material is unchanged
- Long Service Life – solid-state, no moving parts; MTBF >200,000 hours in clean industrial environments
Complete System Bill of Materials
A fully functional 3300 NSv proximity measurement loop requires the following components:
- Proximity Probe – 330903-00-15-05-02-00 (this item)
- Extension Cable – 330130-xx-xx (length to suit installation; 5 m, 9 m, or custom)
- Proximitor® Sensor / Driver – 3300 XL 8mm Proximitor® (e.g., 330180-91-00) or 3500/42M rack module
- Mounting Hardware – stainless probe holder, lock nut, and jam nut (application-specific)
- Signal Cable – shielded twisted-pair from Proximitor® to DCS/PLC analog input
- Barrier / Isolator – Zener barrier or galvanic isolator for hazardous-area installations (ATEX/IECEx)
Compliance & Industry Standards
- API 670 – Machinery Protection Systems (5th Edition) – radial vibration channel requirements
- ISO 10816 / ISO 20816 – Mechanical vibration evaluation of machine sets
- ATEX / IECEx – available in intrinsically safe configurations for Zone 1/2 hazardous areas
- CE Marking – EMC Directive 2014/30/EU compliant
- RoHS – compliant with Directive 2011/65/EU
Quality Assurance & Sourcing
Every unit offered through Konmask.com undergoes a structured incoming inspection protocol:
- Visual inspection of probe tip, cable armor, and connector integrity
- DC resistance and insulation resistance verification
- Sensitivity check against Bently Nevada factory calibration data
- Serialization and traceability documentation retained on file
We source from authorized distribution channels and verified surplus inventories. Counterfeit-risk screening is applied to all Bently Nevada / Baker Hughes product lines per our internal procurement policy.
How to Source This Part
- Add to Cart – click the purchase button above to place an order online
- Request a Quote – for volume orders (>5 units) or urgent delivery, email support@konmask.com with your required quantity and delivery date
- Lead Time – in-stock units ship within 1–3 business days; ex-stock orders confirmed within 24 hours
- Export & Customs – we handle EXW, FOB Xiamen, and CIF terms; HS Code 9031.80 applies
- Payment – T/T, PayPal, and major credit cards accepted; LC available for orders >USD 5,000
Application-Specific FAQ
Q: Can the 330903-00-15-05-02-00 be used with a 3500 series rack?
A: Yes. When paired with a 3500/42M or 3500/40M proximity I/O module, the NSv output is fully compatible. Verify the Proximitor® driver gap voltage range matches your installation gap.
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; practical limits are set by the Proximitor® driver bandwidth and DCS sampling rate.
Q: Is recalibration required if the target material is stainless steel instead of 4140?
A: Yes. Eddy-current sensitivity varies with target conductivity and permeability. Bently Nevada provides material-specific calibration curves; contact us for calibrated probe sets for non-standard targets.
Q: Can this probe be installed in a hazardous area (Zone 1)?
A: The standard 330903 series is not intrinsically safe. For Zone 1/2 installations, specify the ATEX-rated variant and use an approved Zener barrier or galvanic isolator in the associated apparatus loop.
Q: What is the difference between 330903-00-15-05-02-00 and 330903-00-15-05-CN-00?
A: The -02- position in the part number denotes the connector/termination style. The CN suffix indicates a China-market variant with localized documentation. Electrically and mechanically, the probes are equivalent.
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