Turbine Vibration Monitoring Solution – Bently Nevada 330908-00-36-05-02-05-05 | 3300 NSv Series
Where This Product Is Used
The Bently Nevada 330908-00-36-05-02-05-05 is a high-precision eddy-current proximity probe engineered for continuous, non-contact vibration and position measurement in rotating machinery. Deployed across the most demanding industrial environments:
- Steam and Gas Turbines – Shaft radial vibration and axial position monitoring per API 670
- Centrifugal Compressors – Real-time rotor orbit tracking in petrochemical and LNG plants
- Pumps and Fans – Continuous bearing clearance monitoring in power generation and water treatment
- Gearboxes – Gear mesh frequency analysis and shaft eccentricity detection
- Marine Propulsion Systems – Shaft displacement monitoring in offshore and naval applications
- Paper and Steel Mills – Roll position and vibration measurement in high-temperature, high-humidity environments
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330908-00-36-05-02-05-05 |
| Series | 3300 NSv (Non-Standard Voltage) |
| Probe Type | Eddy-Current Proximity Probe |
| Cable Length | 0.9 m (36 in) integral cable |
| Tip Diameter | 5 mm |
| Thread Size | M5 x 0.5 |
| Nominal Gap Range | 0.25 to 2.25 mm (10 to 90 mil) |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Frequency Response | DC to 10,000 Hz (-3 dB) |
| Operating Temperature | -35 C to +177 C |
| Target Material | AISI 4140 steel (standard) |
| Housing Material | 316 Stainless Steel |
| Connector | Integral coaxial cable, TNC termination |
| Weight | Approx. 240 g |
| Approvals | CE, ATEX, IECEx |
Why Engineers Specify This Model
- NSv Architecture – Non-Standard Voltage output optimized for direct interface with Bently Nevada 3300 series monitors without additional signal conditioning
- 5 mm Tip for Tight Clearances – Ideal for small-bore bearing housings where standard 8 mm probes cannot be installed
- M5 Thread – Precise axial positioning with fine-pitch thread; compatible with standard Bently Nevada mounting hardware
- Integral 0.9 m Cable – Eliminates field-splice connectors, reducing signal noise and improving MTBF in high-vibration environments
- Wide Temperature Range – Qualified to -35 C / +177 C, suitable for cryogenic and high-temperature turbine applications
- Drop-in Replacement – Fully backward-compatible with existing 3300 series monitor racks; no recalibration required
Complete System Bill of Materials
A complete Bently Nevada 3300 NSv proximity measurement loop requires:
- Proximity Probe – 330908-00-36-05-02-05-05 (this item)
- Extension Cable – 330130-080-00-00 (8 m) or 330130-050-00-00 (5 m)
- Proximitor Sensor – 330180-X1-05 (3300 NSv Proximitor)
- Monitor Module – 3300/16 or 3300/20 series rack card
- Mounting Bracket – Bently Nevada standard probe holder (M5 thread)
- Barrier / Isolator – Required for ATEX Zone 1 installations
Contact Konmask for complete loop pricing and availability.
Compliance and Industry Standards
- API 670 – Machinery Protection Systems (5th Edition) compliant measurement chain
- ISO 10816 / ISO 20816 – Mechanical vibration evaluation standard
- IEC 61511 – Functional safety for SIS applications
- ATEX Directive 2014/34/EU – Suitable for use in explosive atmospheres
- IECEx – International certification for hazardous area equipment
- CE Marking – European conformity
Quality Assurance and Sourcing
Konmask sources Bently Nevada components exclusively through authorized distribution channels and vetted surplus networks. Every unit undergoes:
- Visual inspection for housing integrity, thread condition, and cable jacket
- Continuity and impedance verification against OEM specifications
- Traceability documentation (lot number, date code where available)
- Anti-static packaging with humidity indicator card
We do not sell counterfeit, re-labeled, or unverified parts. All products ship with a Konmask inspection certificate.
How to Source This Part
- Add to Cart – Click Buy it now for immediate checkout, or Add to cart to continue shopping
- Request a Quote – For quantities 5 units or more or project BOM pricing, email support@konmask.com
- Lead Time – In-stock units ship within 1 to 3 business days; ex-stock orders confirmed within 24 hours
- Export and Customs – We handle HS code documentation (HS 9031.80) and export compliance for international shipments
- Payment – T/T, PayPal, credit card, and trade-term (EXW/FOB Xiamen) options available
Application-Specific FAQ
Q: Can this probe be used with a non-Bently Nevada monitor?
A: The NSv output (-24 VDC supply, 200 mV/mil scale factor) is compatible with most third-party monitors that accept standard eddy-current probe inputs. Verify your monitor input impedance and supply voltage before installation.
Q: What is the maximum shaft speed this probe can measure?
A: The 10,000 Hz frequency response supports shaft speeds up to 600,000 RPM for once-per-revolution events, suitable for all industrial turbomachinery applications.
Q: Is this probe suitable for ATEX Zone 1 installations?
A: Yes, when used with an approved Bently Nevada Proximitor and appropriate zener barrier or galvanic isolator. Always verify the complete loop ATEX certificate before installation.
Q: What target material correction is needed for non-4140 steel shafts?
A: Bently Nevada provides target material correction factors for common alloys (Inconel, titanium, aluminum). Contact Konmask for the applicable correction table for your shaft material.
Q: Can I replace just the probe without replacing the extension cable and Proximitor?
A: Yes. The 330908-00-36-05-02-05-05 is a direct drop-in replacement within the 3300 NSv loop. No re-tuning or recalibration of the Proximitor is required provided the extension cable length remains unchanged.
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