Rotating Machinery Vibration Monitoring Solution – Bently Nevada 330905-00-25-50-02-00 | 3300 XL NSv
The Bently Nevada 330905-00-25-50-02-00 is a complete 3300 XL NSv Non-Standard Voltage Proximity Transducer System engineered for continuous, real-time shaft vibration and position measurement on critical rotating machinery. When a turbine trips unexpectedly or a compressor bearing begins to fail, it is this transducer system — mounted millimetres from the shaft — that delivers the first warning. Konmask.com supplies genuine and verified units to keep your condition-monitoring infrastructure reliable and audit-ready.
Where This Product Is Used
The 330905-00-25-50-02-00 is specified by rotating-equipment engineers across heavy industry wherever API 670 machinery protection is mandatory:
- Steam & Gas Turbines – radial shaft vibration and thrust position monitoring on HP/LP turbine stages; early detection of rotor imbalance, misalignment, and oil-whirl instability
- Centrifugal & Axial Compressors – continuous proximity measurement at journal bearings in pipeline compression stations, LNG trains, and petrochemical crackers
- Pumps & Fans (Critical Service) – boiler feed pumps, cooling-water pumps, and induced-draft fans in power generation where unplanned downtime is unacceptable
- Gearboxes & Expanders – shaft orbit and eccentricity ratio monitoring in high-speed gear trains and turboexpanders in air-separation and refinery service
- Marine Propulsion Systems – shaft-line vibration surveillance on diesel-electric and steam-driven vessels requiring continuous classification-society compliance
- Test Cells & R&D Rigs – OEM acceptance testing of rotating equipment where traceable, high-bandwidth displacement data is required
Technical Specifications
- Part Number: 330905-00-25-50-02-00
- Series: 3300 XL NSv (Non-Standard Voltage)
- System Type: Eddy-current proximity transducer system (probe + extension cable + proximitor)
- Probe Tip Diameter: 25 mm (1 in)
- Cable Length: 5.0 m (standard; see part-number matrix for alternatives)
- Output Voltage: Non-Standard Voltage (NSv) – nominally –18 V DC at mid-range; verify with system monitor input card
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Linear Range: 0.25 mm – 2.54 mm (10 – 100 mil) on AISI 4140 steel target
- Frequency Response: 0 – 10 000 Hz (–3 dB)
- Operating Temperature (Probe): –35 °C to +177 °C
- Operating Temperature (Proximitor): –35 °C to +85 °C
- Supply Voltage: –24 V DC (±1 V)
- Connector: 2-pin MIL-C-5015 (probe); integral cable (extension)
- Approvals: CE, FM, CSA, ATEX (Ex ia IIC T6), IECEx
- Compliance: API 670 5th Edition, ISO 10816, ISO 7919
Why Engineers Specify This Model
- API 670 Certified – meets the machinery protection standard mandated by EPC contractors and end-users in oil & gas, power, and petrochemical sectors
- NSv Output Compatibility – the non-standard voltage output integrates directly with Bently Nevada 3300 series monitor cards without signal conditioning, eliminating wiring errors
- 25 mm Probe for Larger Shafts – the larger tip diameter provides a wider linear range and greater immunity to surface finish variation on large-diameter rotors (>150 mm)
- Intrinsically Safe (Ex ia) – ATEX/IECEx certified for Zone 0/1 hazardous areas; no additional barriers required when paired with approved Bently Nevada monitors
- Matched System Calibration – probe, extension cable, and proximitor are factory-calibrated as a matched set, ensuring the published sensitivity curve is maintained in the field
- Long-Term Availability – active product in the Bently Nevada 3300 XL portfolio; spare-parts support confirmed through Baker Hughes service network
Complete System Bill of Materials
A fully functional 3300 XL NSv installation typically includes the following components (contact Konmask for bundle pricing):
- 330905-00-25-50-02-00 – Proximity Transducer System (this item: probe + 5 m extension + proximitor)
- 330180-X1-05 – 3300 XL 8-mm Proximitor (if ordering probe and proximitor separately)
- 330130-045-00-CN – Extension cable, 4.5 m, armoured (alternative cable length)
- 3300/16 – Dual Voting Logic Monitor (rack-mount monitor card, 16-channel)
- 3300/20-01-01-00 – Keyphasor Module (for phase reference and 1× vector analysis)
- 3500/42M – Proximitor/Seismic Monitor (alternative monitor for 3500 rack systems)
- Mounting hardware: armoured conduit fittings, probe holder, lock nut (site-specific; consult Konmask application team)
Compliance & Industry Standards
- API 670 – Machinery Protection Systems (5th Edition, 2014)
- ISO 10816-3 – Mechanical vibration: evaluation of machine vibration by measurements on non-rotating parts
- ISO 7919-3 – Mechanical vibration: evaluation of machine vibration by measurements on rotating shafts
- IEC 60079-11 – Explosive atmospheres: intrinsic safety (Ex ia)
- ATEX Directive 2014/34/EU – Equipment for explosive atmospheres (Zone 0, 1, 2)
- IECEx Scheme – International certification for hazardous-area equipment
- CE Marking – EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
Quality Assurance & Sourcing
- Units sourced from Baker Hughes / Bently Nevada authorized distribution channels or verified surplus with full traceability
- Pre-shipment inspection: visual integrity, label and date-code verification, continuity and insulation resistance check
- Anti-static, moisture-barrier packaging with desiccant and shock-indicator label
- Calibration certificate and factory test report available on request
- 12-month warranty against manufacturing defects from date of shipment
- Batch and serial-number records retained for 5 years to support your QMS audit trail
How to Source This Part
- Confirm your existing monitor rack model (3300, 3500, or System 1) and available monitor card input type
- Verify shaft material (AISI 4140 or equivalent) and required linear range for your bearing clearance
- Check hazardous-area classification (Zone 0/1/2) and confirm ATEX/IECEx barrier requirements
- Add 330905-00-25-50-02-00 to cart or contact us for volume pricing and lead-time confirmation
- Request a certificate of conformity, calibration record, or MSDS if required for your site acceptance procedure
📧 support@konmask.com | 📞 +0086 19859288691
Application-Specific FAQ
Q: Can this transducer system be used on non-ferrous shafts (e.g., titanium or Inconel)?
A: The standard calibration is for AISI 4140 steel. Non-ferrous or exotic alloy targets require a custom calibration curve. Contact our technical team with your shaft material specification.
Q: Is the 330905-00-25-50-02-00 compatible with the Bently Nevada 3500 rack?
A: Yes, when paired with a 3500/42M Proximitor/Seismic Monitor card configured for NSv input. Verify the monitor card firmware version supports 3300 XL NSv transducers.
Q: What is the maximum probe-to-shaft gap for installation?
A: The recommended initial gap is 1.27 mm (50 mil), placing the shaft at mid-range of the linear zone. Adjust per the Bently Nevada installation manual (GEK-91582).
Q: Can I replace only the probe without replacing the full system?
A: The probe, extension cable, and proximitor are calibrated as a matched set. Replacing individual components will shift the sensitivity curve and invalidate API 670 compliance. Always replace as a complete system.
Q: What is the lead time for 330905-00-25-50-02-00?
A: In-stock units ship within 1–3 business days. For large-quantity orders or expedited requirements, contact us directly for current availability.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
