Bently Nevada 330905-00-21-10-02-CN 3300 NSv Proximity Probe | Replacement, Equivalent & Selection Guide
The Bently Nevada 330905-00-21-10-02-CN is a high-performance eddy-current proximity probe from the industry-standard 3300 NSv Series, engineered for continuous non-contact vibration and position measurement in rotating machinery. Designed for demanding industrial environments, this probe delivers exceptional signal stability and long service life in turbines, compressors, pumps, and motors.
At Konmask.com, we specialize in sourcing genuine, tested, and certified Bently Nevada components for procurement engineers who require exact-spec replacements with full traceability.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330905-00-21-10-02-CN |
| Series | 3300 NSv (Non-Standard Voltage) |
| Probe Type | Eddy-Current Proximity Probe |
| Probe Length | 21 cm |
| Cable Length | 10 m (extension cable) |
| Connector Type | CN (Chinese Standard Connector) |
| Tip Diameter | 8 mm |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Linear Range | 0.25 – 2.25 mm (10 – 90 mil) |
| Supply Voltage | -24 VDC (nominal) |
| Operating Temperature | -35°C to +120°C |
| Target Material | AISI 4140 Steel (standard) |
| Agency Approvals | CE, RoHS |
| Weight | ~40 g |
Compatible Replacement & Equivalent Models
The following models are functionally compatible or direct replacements for the 330905-00-21-10-02-CN. Always verify connector type, cable length, and sensitivity before substitution:
| Part Number | Key Difference | Compatibility |
|---|---|---|
| 330905-00-21-10-02-05 | Standard MIL connector vs CN | Electrically identical; connector adapter required |
| 330905-00-21-05-02-CN | 5 m cable vs 10 m | Direct replacement if cable length is acceptable |
| 330905-00-21-10-01-CN | Different connector variant | Verify connector pinout before installation |
| 330930-00-21-10-02-CN | 3300 XL 8mm probe (successor) | Compatible with 3300 drivers; preferred upgrade path |
| 330780-50-00 | 3300 5mm probe | Not interchangeable; different tip diameter and driver |
| Epro PR6423/010-040 | Third-party equivalent | Functional equivalent; verify driver compatibility |
Why Choose the Original Model
- Exact OEM Specification: Guaranteed compatibility with Bently Nevada 3300 series drivers and monitors without recalibration.
- CN Connector: Factory-terminated Chinese-standard connector eliminates field wiring errors common with adapter solutions.
- Validated Sensitivity: Factory-calibrated at 7.87 V/mm — critical for accurate vibration amplitude readings in API 670-compliant systems.
- Thermal Stability: Maintains linearity across -35°C to +120°C, suitable for hot-section turbine bearing housings.
- Full Traceability: Each unit supplied by Konmask.com includes documentation supporting quality audits and plant maintenance records.
Typical Applications
- Steam and gas turbine shaft radial vibration monitoring
- Centrifugal compressor rotor position measurement
- Boiler feed pump bearing vibration surveillance
- Gearbox and motor shaft displacement monitoring
- API 670 machinery protection systems
- Petrochemical, power generation, and LNG plant rotating equipment
System Compatibility
The 330905-00-21-10-02-CN probe is designed to operate within the complete Bently Nevada 3300 NSv System:
- Driver/Oscillator: 330180 Series (3300 NSv Proximitor)
- Monitor: 3300/16 Dual Vibration Monitor, 3300/20 Radial Vibration Monitor
- System: System 1 Condition Monitoring Software
- Extension Cable: 330130 Series (must match total system cable length)
- Note: Total probe + extension cable length must match Proximitor calibration. Do not mix NSv and standard 3300 components without recalibration.
Selection Guide
Use the following decision matrix to confirm the correct part number for your application:
| Requirement | Specification to Match | This Model |
|---|---|---|
| Probe tip diameter | 8 mm | ✔ 8 mm |
| Probe body length | 21 cm | ✔ 21 cm |
| Extension cable length | 10 m | ✔ 10 m |
| Connector standard | CN (Chinese) | ✔ CN |
| Driver series | 3300 NSv Proximitor | ✔ Compatible |
| Sensitivity | 7.87 V/mm | ✔ Factory calibrated |
| Target material | Steel (AISI 4140) | ✔ Standard target |
If any parameter does not match your installation, contact our engineering team before ordering.
Quality Assurance & Sourcing
- Genuine Parts Only: Konmask.com sources exclusively from authorized distributors and verified surplus channels — no counterfeit risk.
- Pre-shipment Inspection: Each probe is visually inspected and electrically verified before dispatch.
- Documentation Package: Certificate of conformance, test report, and packing list provided on request.
- Shelf Life: Stored in ESD-safe, climate-controlled warehouse to preserve calibration integrity.
- Lead Time: In-stock units ship within 2 business days; sourced units typically 7–15 business days.
How to Order
- Confirm part number 330905-00-21-10-02-CN matches your existing installation tag or engineering BOM.
- Verify driver model and total cable length with your instrumentation engineer.
- Submit your RFQ via support@konmask.com or add to cart directly.
- Provide your shipping address, required quantity, and any documentation requirements.
- Receive proforma invoice within 24 hours; payment via T/T, PayPal, or credit card.
Replacement & Compatibility FAQ
Q: Can I replace 330905-00-21-10-02-CN with 330905-00-21-10-02-05?
A: Yes, electrically identical. However, the -05 uses a standard MIL connector. A CN-to-MIL adapter is required, or field re-termination by a qualified technician.
Q: Is the 330930 series a drop-in replacement?
A: The 330930 (3300 XL 8mm) is the recommended upgrade path and is compatible with 3300 NSv drivers. Sensitivity and linear range are identical. Confirm with your Bently Nevada system documentation.
Q: Can I use a third-party probe like Epro PR6423 with my 3300 NSv Proximitor?
A: Functionally possible, but requires driver recalibration and may void system certification. We recommend OEM parts for API 670-certified installations.
Q: What happens if the cable length does not match?
A: The 3300 NSv Proximitor is calibrated for a specific total cable length (probe + extension). Mismatched length shifts the linear range and introduces measurement error. Always match total length to the Proximitor calibration label.
Q: Do you provide calibration certificates?
A: Yes. Factory calibration documentation is available for all new units. Contact us for specific documentation requirements.
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