Bently Nevada 330907-05-30-10-02-CN – Reverse Mount Proximity Probe | 3300 NSv Series Platform
When a critical rotating machine loses its shaft position feedback, the consequences are immediate and severe: undetected rotor rubs, catastrophic bearing failures, and unplanned shutdowns that cost industrial facilities tens of thousands of dollars per hour. The proximity probe is not a peripheral sensor — it is the primary guardian of rotating machinery health, and its absence or failure leaves engineers blind to the most dangerous mechanical events in a plant.
The Bently Nevada 330907-05-30-10-02-CN is a reverse mount proximity probe engineered for the 3300 NSv (Non-contacting Vibration) measurement system — one of the most widely deployed machinery protection platforms in global heavy industry. This specific configuration features a 30 mm cable length extension, 10 mm probe tip diameter, and CN (China) regional compliance designation, making it the preferred choice for OEM-integrated and field-retrofit installations across power generation, petrochemical, and rotating equipment sectors.
Complete Technical Specifications
- Part Number / SKU: 330907-05-30-10-02-CN
- Brand: Bently Nevada (Baker Hughes)
- Series: 3300 NSv (Non-contacting Vibration)
- Probe Type: Reverse Mount Proximity Probe
- Probe Tip Diameter: 10 mm
- Cable Length: 30 mm (armored extension)
- Regional Designation: CN (China market compliance)
- Measurement Technology: Eddy-current, non-contacting
- Compatible Monitor: 3300 NSv Series Monitors
- Output Signal: DC voltage proportional to gap distance
- Mounting Style: Reverse mount (probe tip faces away from standard orientation)
- Weight: Approx. 20 g
- Operating Environment: Industrial — suitable for high-vibration, high-temperature machinery environments
Proven Application Environments
- Power Generation: Steam turbines, gas turbines, hydro generators — shaft radial vibration and axial position monitoring
- Petrochemical & Refining: Compressors, pumps, expanders — continuous machinery protection in hazardous areas
- Oil & Gas: Pipeline compressor stations, LNG facilities — API 670-compliant monitoring systems
- Pulp & Paper / Steel Mills: High-speed rotating equipment requiring reverse-mount probe geometry due to mechanical constraints
- Marine Propulsion: Ship propulsion shafts and auxiliary machinery monitoring
- General Industrial OEM: Any rotating machine where standard forward-mount geometry is mechanically inaccessible
Engineering Advantages
- Reverse Mount Geometry: Enables installation in confined bearing housings where standard probes cannot be routed — critical for retrofit and space-constrained OEM designs
- 3300 NSv System Compatibility: Plug-and-play replacement within existing Bently Nevada 3300 NSv monitor infrastructure — no recalibration of the monitor required when replacing like-for-like
- Eddy-Current Precision: Non-contacting measurement eliminates mechanical wear, providing continuous, maintenance-free shaft position data
- CN Regional Compliance: Designed and certified for China market regulatory requirements, reducing customs and compliance friction for domestic installations
- Armored Cable Construction: 30 mm armored extension cable resists mechanical damage in high-vibration environments, extending service life
- OEM-Grade Manufacturing: Produced to Bently Nevada’s exacting tolerances, ensuring consistent sensitivity and linearity across the measurement range
System Architecture & Signal Flow
The 330907-05-30-10-02-CN operates as part of a three-component eddy-current measurement chain within the 3300 NSv platform:
- Probe (330907-05-30-10-02-CN): Generates a high-frequency electromagnetic field at the probe tip. As the conductive shaft surface moves relative to the probe, eddy currents are induced, altering the probe’s impedance.
- Extension Cable: Transmits the impedance-modulated signal from the probe to the proximitor/oscillator driver. The 30 mm armored extension in this configuration bridges the gap between probe and driver in reverse-mount installations.
- Proximitor / Oscillator-Demodulator (sold separately): Converts the impedance change into a DC voltage output (typically -24 VDC system, with output ranging from approximately -2 VDC to -18 VDC depending on gap). This voltage is then read by the 3300 NSv monitor for vibration amplitude and shaft position calculations.
Compatible proximitor/driver units include the Bently Nevada 3300 XL 8mm and 3300 NSv series drivers. Always verify the complete system calibration data sheet when integrating this probe into an existing measurement chain.
Sourcing & Quality Verification
At Konmask.com, every Bently Nevada proximity probe undergoes a structured sourcing and verification process before shipment:
- Authorized Supply Chain: Units are sourced from verified distributors and OEM-authorized channels. We do not source from unverified secondary markets.
- Visual & Dimensional Inspection: Each probe is inspected for physical integrity — connector condition, cable armor, probe tip surface, and part number label accuracy.
- Documentation Package: Available upon request: original manufacturer documentation, calibration certificates, and country-of-origin declarations.
- Packaging Integrity: Products are shipped in anti-static, shock-resistant packaging appropriate for precision instrumentation.
- Traceability: Lot and serial number records maintained for full supply chain traceability.
Procurement Process
- Submit Inquiry: Contact us via the form on this page or email support@konmask.com with your required quantity and delivery timeline.
- Quotation: Our technical team will respond within 1 business day with pricing, lead time, and availability confirmation.
- Order Confirmation: Upon agreement, a formal proforma invoice is issued. Payment terms are discussed based on order volume and customer profile.
- Quality Check & Dispatch: Units are inspected, documented, and dispatched via DHL, FedEx, or freight forwarder as required.
- After-Sales Support: Our engineering team is available for installation guidance and system integration questions post-delivery.
Technical FAQ
Q: What is the difference between a standard proximity probe and a reverse mount probe?
A: A reverse mount probe has its active tip oriented in the opposite direction relative to the connector end, allowing installation in bearing housings where the cable must exit from the same side as the shaft — a common constraint in back-to-back compressor and turbine designs.
Q: Is the 330907-05-30-10-02-CN a direct replacement for other 3300 NSv probes?
A: It is compatible within the 3300 NSv measurement system, but the reverse mount geometry and 10 mm tip diameter are specific to this part number. Always verify mechanical fit and system calibration data before substituting probe configurations.
Q: Does the CN designation affect electrical performance?
A: No. The CN designation refers to regional compliance and market designation, not to electrical or measurement specifications. Performance parameters are identical to equivalent non-CN variants.
Q: Can this probe be used with non-Bently Nevada monitors?
A: The probe generates a standard eddy-current impedance signal. While it is optimized for the 3300 NSv system, it may be compatible with other eddy-current monitor systems that accept the same probe tip diameter and cable configuration. Consult your monitor manufacturer’s compatibility documentation.
Q: What is the typical lead time for this part?
A: Lead time varies by stock availability. Contact Konmask.com for a real-time availability check. We maintain stock of high-demand Bently Nevada 3300 NSv components for rapid dispatch.
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Contact: support@konmask.com | +0086 19859288691
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