Bently Nevada 330905-00-03-10-02-05/CN – Eddy-Current Proximity Probe | 3300 NSv Platform
Engineering Background
The Bently Nevada 3300 NSv (Non-contacting Vibration) system is the industry benchmark for continuous shaft vibration monitoring in rotating machinery. Developed by Baker Hughes (Bently Nevada), the 3300 NSv series is engineered to meet the stringent requirements of API 670 machinery protection standards, making it the preferred choice for turbines, compressors, pumps, and motors in critical process industries.
Product Positioning
The 330905-00-03-10-02-05/CN is an 8 mm eddy-current proximity probe designed for radial shaft vibration, axial position, and differential expansion measurement. It operates as the primary sensing element within the 3300 NSv signal conditioning chain, paired with extension cables and proximitor sensors to deliver calibrated, low-noise output signals to plant DCS and machinery protection systems.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 330905-00-03-10-02-05/CN |
| Series / Platform | Bently Nevada 3300 NSv |
| Probe Tip Diameter | 8 mm |
| Sensing Technology | Eddy-Current (Non-contacting) |
| Cable Length | 3 m (integral cable) |
| Linear Range | 0.25 mm – 2.25 mm (nominal) |
| Scale Factor | 7.87 V/mm (200 mV/mil) |
| Frequency Response | DC – 10,000 Hz (–3 dB) |
| Operating Temperature | –35 °C to +177 °C |
| Supply Voltage | –24 VDC (via proximitor) |
| Output Signal | –2 VDC to –18 VDC (nominal) |
| Target Material | AISI 4140 steel (standard) |
| Connector Type | Coaxial, armored integral cable |
| Ingress Protection | IP67 |
| Compliance | API 670, CE |
| Country of Origin | China (CN variant) |
| Weight | Approx. 40 g |
Proven Application Environments
- Steam & Gas Turbines – Radial shaft vibration monitoring per API 670
- Centrifugal Compressors – Axial position and differential expansion measurement
- Boiler Feed Pumps – Continuous bearing journal orbit analysis
- Electric Motors (>500 kW) – Non-contacting rotor eccentricity detection
- Gearboxes & Expanders – High-speed shaft runout measurement
- Petrochemical & LNG Plants – SIL-rated machinery protection loops
Engineering Advantages
- API 670 Compliant – Drop-in replacement for existing 3300 NSv installations without recalibration
- Wide Temperature Range – Rated to 177 °C for hot-section turbine bearing pedestals
- High Frequency Response – DC to 10 kHz bandwidth captures sub-synchronous and high-order harmonics
- Armored Integral Cable – Stainless steel armor resists mechanical damage in harsh plant environments
- Plug-and-Play Compatibility – Fully interchangeable with Bently Nevada 3300 XL 8 mm proximitor/extension cable assemblies
- Low Noise Floor – <25 mV pk-pk electrical runout for precision orbit plots
System Architecture & Signal Flow
The 330905-00-03-10-02-05/CN operates within a three-component signal chain:
- Proximity Probe (330905-00-03-10-02-05/CN) – Generates eddy-current field at shaft surface; converts gap distance to raw voltage.
- Extension Cable (330130 series) – Transmits signal from probe tip to proximitor; maintains system impedance.
- Proximitor Sensor (330180 / 330780 series) – Conditions raw signal to calibrated –24 VDC output; interfaces with Bently Nevada 3500 rack or third-party DCS.
Output feeds directly into Bently Nevada 3500/40M or 3500/42M monitor cards, or any API 670-compliant machinery protection system accepting –2 V to –18 V DC signals.
Sourcing & Quality Verification
- All units sourced through verified industrial supply channels with full traceability documentation
- Pre-shipment inspection includes: visual examination, connector integrity check, and impedance verification
- Original manufacturer labeling and part markings preserved and authenticated
- Certificate of Conformance (CoC) available upon request
- Packaging: anti-static foam insert, moisture-barrier bag, outer carton with part number label
Procurement Process
- Submit Inquiry – Email support@konmask.com with quantity, delivery location, and required lead time
- Receive Quotation – Formal quotation with unit price, freight terms (EXW/FOB/CIF), and estimated delivery within 24 hours
- Order Confirmation – Purchase order accepted; proforma invoice issued
- Quality Inspection – Pre-shipment inspection report provided before dispatch
- Shipment & Tracking – DHL / FedEx / sea freight with full tracking; export documentation included
- After-Sales Support – 12-month warranty; technical support via email or WhatsApp
Technical FAQ
Q: Is the 330905-00-03-10-02-05/CN compatible with the Bently Nevada 3500 monitoring rack?
A: Yes. It is fully compatible with 3500/40M and 3500/42M monitor cards when paired with the appropriate 330180 or 330780 proximitor sensor.
Q: What is the difference between the /CN and standard variants?
A: The /CN suffix denotes the China-manufactured variant. Electrically and mechanically, it meets the same 3300 NSv performance specifications and is a direct replacement for the standard part.
Q: Can this probe be used on non-steel target materials?
A: The standard calibration is for AISI 4140 steel. For other target materials (e.g., titanium, Inconel), a material correction factor must be applied. Contact our engineering team for recalibration guidance.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit. Volume pricing is available for orders of 5 units or more.
Q: Do you provide export documentation for customs clearance?
A: Yes. Commercial invoice, packing list, Certificate of Origin, and HS code declaration (HS 9031.80) are provided with every shipment.
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