Bently Nevada 330905-00-05-05-01-00 – Non-Contact Shaft Vibration Measurement | 3300 XL NSv Proximity Transducer System
Engineering Background
The Bently Nevada 3300 XL NSv (Non-Standard voltage) Proximity Transducer System is engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion in rotating machinery. Developed under Baker Hughes’ Bently Nevada machinery protection platform, the 3300 XL series has been the industry benchmark for turbomachinery condition monitoring for decades.
Product Positioning
Part number 330905-00-05-05-01-00 is a complete NSv proximity transducer system comprising a probe, extension cable, and Proximitor® sensor configured for 5 mm probe tip-to-target gap, 5-metre probe cable, and 5-metre extension cable. It is the preferred solution for procurement engineers specifying API 670-compliant vibration monitoring on gas turbines, steam turbines, compressors, and large pumps.
Complete Technical Specifications
| Part Number | 330905-00-05-05-01-00 |
| Series / Platform | Bently Nevada 3300 XL NSv |
| System Type | Eddy-Current Proximity Transducer System (Non-Contact) |
| Measurement Function | Radial shaft vibration, axial position, differential expansion |
| Probe Tip Diameter | 8 mm (standard 3300 XL probe) |
| Nominal Gap Voltage | NSv – Non-Standard voltage output (consult system documentation) |
| Probe Cable Length | 5 metres (integral) |
| Extension Cable Length | 5 metres |
| Proximitor® Supply Voltage | –24 VDC (nominal) |
| Output Signal | DC voltage proportional to gap; AC component = vibration signal |
| Frequency Response | DC to 10,000 Hz (–3 dB) |
| Operating Temperature | –35 °C to +85 °C (probe); –35 °C to +65 °C (Proximitor) |
| Target Material | AISI 4140 steel or equivalent (per Bently Nevada calibration) |
| Ingress Protection | IP66 (Proximitor enclosure) |
| Approvals / Standards | API 670, CE, ATEX / IECEx (zone-dependent; confirm with datasheet) |
| Connector Type | MIL-spec coaxial, gold-plated |
| Weight | Approx. 220 g (system) |
| Country of Origin | United States |
Proven Application Environments
- Gas turbines and steam turbines (power generation & oil/gas)
- Centrifugal and axial compressors
- Large boiler feed pumps and process pumps
- Gearboxes and expanders requiring API 670 compliance
- Petrochemical and refinery rotating equipment trains
- LNG plant machinery protection systems
Engineering Advantages
- Non-contact measurement – zero mechanical wear, continuous operation without maintenance intervals
- High-frequency response – captures sub-synchronous, synchronous, and super-synchronous vibration events up to 10 kHz
- API 670 compliant – drop-in replacement for existing 3300 XL installations; no re-calibration of monitoring system required when using matched system components
- NSv configuration – optimised output scaling for integration with Bently Nevada 3500 series monitors and System 1 software
- Rugged construction – stainless steel probe body, hermetically sealed Proximitor, suitable for harsh process environments
- Long cable system – 5 m + 5 m configuration allows Proximitor mounting in a safe area remote from the machine
System Architecture & Signal Flow
The 330905-00-05-05-01-00 system operates as a three-component eddy-current chain:
- Probe (330905) – generates a high-frequency electromagnetic field at the tip; gap changes modulate the field.
- Extension Cable (330130-xx-xx) – transmits the RF signal from probe to Proximitor with controlled impedance; 5 m length in this configuration.
- Proximitor® Sensor – demodulates the RF signal, outputs a DC gap voltage and superimposed AC vibration voltage to the monitoring system (e.g., Bently Nevada 3500/40M or 3500/42M).
The matched-system calibration ensures the scale factor (mV/mil or mV/µm) is within API 670 tolerance across the full operating temperature range.
Sourcing & Quality Verification
- Units sourced from authorised distributors and verified OEM surplus channels
- Each system inspected for physical integrity, connector condition, and cable continuity prior to dispatch
- Original Bently Nevada labelling and part-number markings preserved and verified
- Traceability documentation available upon request for critical installations
- Konmask.com maintains a quality-hold process: any unit failing inspection is quarantined and not listed
Procurement Process
- Confirm part number 330905-00-05-05-01-00 against your BOM or existing installation drawing
- Verify cable lengths (5 m probe + 5 m extension) suit your machine layout
- Contact Konmask for lead time, quantity availability, and export documentation if required
- Place order via the store or request a formal quotation at support@konmask.com
- Receive with packing list; inspect on arrival against the checklist provided
Technical FAQ
Q: Is this a complete system or individual components?
A: This listing is for the complete matched system: probe + extension cable + Proximitor sensor, all calibrated as a set under part number 330905-00-05-05-01-00.
Q: Which Bently Nevada monitors is this compatible with?
A: The 3300 XL NSv system is compatible with the Bently Nevada 3500 series monitors (3500/40M, 3500/42M, 3500/45, 3500/46M) and integrates with System 1 condition monitoring software.
Q: Can I use this with a non-Bently Nevada monitor?
A: Yes, provided the monitor accepts a –24 VDC-powered eddy-current input and the scale factor (mV/mil or mV/µm) is configured to match the NSv output. Consult your monitor manufacturer.
Q: What is the difference between standard 3300 XL and NSv?
A: NSv (Non-Standard voltage) refers to a modified output voltage range optimised for specific monitor input cards. Verify compatibility with your 3500 monitor I/O module before ordering.
Q: Do you provide calibration certificates?
A: Calibration certificates from the original manufacturer are provided where available. Contact us prior to ordering if this is a hard requirement.
Q: What is the lead time?
A: In-stock units ship within 1–3 business days. Contact us for current stock status.
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