Bently Nevada 330903-00-08-10-01-CN Proximity Probe – 3300 NSv Eddy Current Series
When a critical rotating machine loses its shaft vibration monitoring signal, the consequences are immediate and severe: undetected rotor imbalance, bearing wear, or shaft misalignment can escalate within minutes into catastrophic equipment failure, unplanned downtime, and six-figure repair costs. The proximity probe is the first line of defense — and when it fails, the entire condition monitoring chain breaks down. There is no substitute for a correctly specified, OEM-grade replacement.
The Bently Nevada 330903-00-08-10-01-CN is an 8 mm eddy current proximity probe within the industry-standard 3300 NSv (Non-Standard Voltage) Series. This series is engineered for high-resolution, non-contact measurement of shaft radial vibration, axial position, and differential expansion in turbomachinery and rotating equipment worldwide. The 330903 family represents Bently Nevada’s commitment to backward compatibility and long-term asset protection, making it one of the most widely deployed probe models across power generation, oil & gas, and petrochemical industries globally.
Technical Specifications
- Part Number: 330903-00-08-10-01-CN
- Series: 3300 NSv (Non-Standard Voltage) Proximity Probe System
- Probe Tip Diameter: 8 mm
- Cable Length: 1.0 m (integral cable)
- Extension Cable Length: 1.0 m
- Measurement Type: Eddy current, non-contact
- Output Signal: Voltage (NSv standard)
- Linear Range: 0.25 mm – 2.26 mm (10 mil – 90 mil)
- Sensitivity: 7.87 V/mm (200 mV/mil) nominal
- Frequency Response: DC to 10,000 Hz
- Operating Temperature: –35°C to +177°C (–31°F to +350°F)
- Target Material: AISI 4140 steel (standard); other materials require calibration factor
- Thread: M10 × 1.0
- Connector: Integral coaxial, CN-type
- Approvals: CE, ATEX / IECEx compatible (verify with system documentation)
- Weight: Approx. 40 g
Note: All specifications are based on published Bently Nevada documentation. Konmask.com does not modify or fabricate technical data.
Key Features & Benefits
- Non-contact measurement: Zero mechanical wear on the probe tip; suitable for continuous 24/7 operation in harsh environments.
- Wide frequency response (DC–10 kHz): Captures both slow-roll runout and high-frequency vibration events in a single channel.
- High-temperature tolerance: Rated to +177°C, enabling direct installation in hot zones near turbine casings and compressor housings.
- NSv output compatibility: Designed to interface directly with 3300 series monitors and Bently Nevada System 1 software without signal conditioning adapters.
- Integral CN connector: Reduces field wiring errors and ensures consistent impedance matching across the probe–cable–driver chain.
- OEM part number traceability: Full Bently Nevada lineage; compatible with existing spare parts registers and maintenance management systems (CMMS/EAM).
Industry & Equipment Applications
- Power Generation: Steam turbines, gas turbines, hydro generators — radial shaft vibration and axial position monitoring.
- Oil & Gas: Centrifugal compressors, pipeline pumps, LNG expanders — API 670 compliant monitoring loops.
- Petrochemical & Refining: Reactor feed pumps, cracked gas compressors, ethylene plant rotating equipment.
- Marine & Offshore: Propulsion turbines, auxiliary machinery on FPSOs and drilling platforms.
- Pulp & Paper / Steel: High-speed rolls, ID fans, induced draft fans with continuous vibration surveillance.
- General Industrial: Any rotating machine requiring API 670 or ISO 10816 compliant vibration monitoring.
System Integration & Compatible Parts
The 330903-00-08-10-01-CN operates as part of a three-component measurement chain. Ensure all three elements are correctly matched for accurate calibration:
- Proximitor / Driver: 3300 XL 8mm Proximitor Sensor (e.g., 330180-91-00) or equivalent 3300 NSv driver module.
- Extension Cable: 330130 series armored extension cable (length must match system calibration — total cable = probe integral + extension).
- Monitor: Bently Nevada 3300 series rack monitors (3300/16, 3300/20, 3300/25) or System 1 Evolution platform.
- Mounting Hardware: M10 × 1.0 probe holder; verify bracket reach against linear range for correct gap voltage at mid-scale (–10 VDC nominal for NSv).
Contact Konmask.com if you need assistance selecting the complete probe–cable–driver assembly for your specific machine train.
Our Quality Assurance Process
- Source verification: All Bently Nevada parts are sourced from authorized distribution channels or directly from surplus OEM inventory with documented chain of custody.
- Visual & dimensional inspection: Probe tip, thread, connector, and cable jacket inspected against OEM drawings before dispatch.
- Functional screening: Where test equipment is available, probes are bench-tested for output voltage linearity within the specified linear range.
- Packaging: Anti-static, foam-lined packaging with individual part labeling; original OEM packaging preserved where available.
- Documentation: Certificate of conformance and packing list provided with every shipment; calibration certificates available on request.
How to Order
- Submit your RFQ via the “Get a Quote” button on this page, or email [email protected].
- Include your required quantity, delivery timeline, and destination country for accurate freight and lead-time quotation.
- Our engineering team will confirm part compatibility and issue a proforma invoice within 1 business day.
- Payment via T/T (bank transfer), PayPal, or trade finance terms for qualified accounts.
- Export documentation (commercial invoice, packing list, CO) prepared for all international shipments.
Why Choose Konmask.com?
- Specialized in industrial automation and condition monitoring components since establishment.
- Global shipping to 60+ countries with DHL, FedEx, and freight forwarder options.
- Engineering support team fluent in Bently Nevada system architecture and API 670 requirements.
- Competitive lead times — many 3300 series parts available from stock for same-week dispatch.
- Trusted by maintenance engineers, EPC contractors, and MRO procurement teams worldwide.
Frequently Asked Questions
Q: Is the 330903-00-08-10-01-CN a direct replacement for the 330903-00-08-10-01-00?
A: The “-CN” suffix denotes a CN-type coaxial connector variant. Electrically and mechanically it is equivalent to the standard version when used with a matching CN-connector extension cable. Verify your existing cable connector type before ordering.
Q: Can this probe be used with a non-Bently Nevada monitor?
A: The 3300 NSv probe is designed for use with Bently Nevada Proximitor drivers. Use with third-party monitors requires verification of input impedance and power supply compatibility. Contact our engineering team for guidance.
Q: What is the correct gap voltage for initial setup?
A: For 3300 NSv 8mm probes, the nominal mid-range gap is approximately 1.27 mm (50 mil), corresponding to approximately –10 VDC output from the Proximitor. Refer to Bently Nevada installation manual 141536-01 for full commissioning procedure.
Q: Do you provide calibration certificates?
A: Calibration certificates from the OEM or third-party calibration labs are available on request. Please specify this requirement at the time of inquiry.
Q: What is the typical lead time?
A: Stock items ship within 3–5 business days. Non-stock items typically require 2–4 weeks. Contact us for current availability.
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