Bently Nevada 330905-00-17-10-02-05 – 8mm Eddy Current Proximity Probe | 3300 NSv Platform
Engineering Background
The Bently Nevada 3300 NSv (Non-contacting Vibration) series represents the industry benchmark for shaft vibration and position measurement in rotating machinery protection systems. Engineered to API 670 standards, these probes are the primary sensing element in continuous machinery protection systems deployed across power generation, oil & gas, petrochemical, and heavy industrial facilities worldwide.
Product Positioning
The 330905-00-17-10-02-05 is an 8mm eddy current proximity probe with a 17-inch (432mm) armored extension cable, designed for direct integration with Bently Nevada 3300 NSv signal conditioning systems. It delivers non-contact, continuous measurement of shaft radial vibration, axial position, and differential expansion — critical parameters for turbine, compressor, and pump protection.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 330905-00-17-10-02-05 |
| Series / Platform | Bently Nevada 3300 NSv |
| Probe Type | Eddy Current Proximity Probe (Non-contacting) |
| Probe Tip Diameter | 8 mm |
| Cable Length | 17 inches (432 mm) armored extension cable |
| Sensitivity | 7.87 mV/µm (200 mV/mil) nominal |
| Linear Range | 0.25 mm – 2.25 mm (10 – 90 mil) |
| Operating Temperature | -35°C to +177°C (-31°F to +350°F) |
| Frequency Response | DC to 10,000 Hz |
| Supply Voltage | -24 VDC (nominal, via driver/proximitor) |
| Output Voltage Range | -2 VDC to -18 VDC |
| Target Material | AISI 4140 steel (standard); other alloys with calibration |
| Connector Type | 10-32 coaxial (standard Bently Nevada) |
| Housing Material | 316 Stainless Steel |
| Ingress Protection | IP67 |
| Approvals / Standards | API 670, CE, ATEX (consult datasheet for zone ratings) |
| Compatible Driver | Bently Nevada 3300 XL 8mm Proximitor (330180 series) |
| Weight | Approx. 80 g |
| Country of Origin | United States |
Proven Application Environments
- Steam & Gas Turbines — Shaft radial vibration and thrust position monitoring per API 670
- Centrifugal Compressors — Continuous rotor dynamic measurement in high-pressure gas service
- Pumps & Fans — Bearing journal orbit analysis and imbalance detection
- Gearboxes — Gear mesh frequency and shaft eccentricity monitoring
- Hydro Turbines — Axial thrust and radial position in wet environments
- Motor-Generator Sets — Differential expansion and rotor position in power generation
Engineering Advantages
- Non-contact measurement — Zero mechanical wear; continuous operation without maintenance intervals
- DC response — Measures both static position (gap) and dynamic vibration in a single channel
- High-temperature rated — Qualified to +177°C for hot-section turbine bearing housings
- Armored cable — Stainless steel braid protects against abrasion, oil, and chemical exposure
- API 670 compliant — Drop-in replacement for existing 3300 NSv installations without recalibration
- Wide frequency bandwidth — DC to 10 kHz captures subsynchronous, synchronous, and high-frequency events
System Architecture & Signal Flow
The 330905-00-17-10-02-05 probe operates as part of a three-component eddy current measurement chain:
- Proximity Probe (330905-00-17-10-02-05) — Generates the electromagnetic field and senses target gap changes
- Extension Cable — Integrated 17-inch armored cable routes signal from probe to proximitor; total system cable length must match driver calibration
- Proximitor / Driver (330180 series) — Conditions the probe signal, provides -24 VDC excitation, and outputs a calibrated voltage proportional to gap distance
The conditioned output feeds directly into Bently Nevada 3500 or System 1 monitoring racks, or third-party DCS/PLC systems via 4–20 mA or voltage interfaces.
Sourcing & Quality Verification
- All units sourced through verified industrial automation supply channels with full traceability
- Pre-shipment inspection includes visual examination, connector integrity check, and dimensional verification
- Original manufacturer labeling and part number markings preserved and verified
- Packaging inspected for transit damage; units shipped in anti-static, padded enclosures
- Certificate of conformance available upon request for critical applications
Procurement Process
- Confirm compatibility — Verify your existing proximitor model (330180-xx) and total cable length requirement before ordering
- Request quote — Contact support@konmask.com for volume pricing, lead time, and availability confirmation
- Place order — Standard checkout or PO-based procurement available for registered B2B accounts
- Receive & inspect — Inspect upon delivery; report any discrepancies within 48 hours
- Installation support — Technical guidance available for gap setting, calibration verification, and system integration
Technical FAQ
Q: Is this probe compatible with the Bently Nevada 3500 monitoring system?
A: Yes. When paired with the correct 330180-series proximitor, the output is fully compatible with 3500-series monitor cards configured for 8mm probes.
Q: What is the correct gap voltage for initial setup?
A: The nominal gap for most applications is 1.0 mm (40 mil), corresponding to approximately -10.4 VDC output. Always refer to the specific machine OEM documentation for the required gap setting.
Q: Can this probe be used with non-steel targets?
A: The standard calibration is for AISI 4140 steel. Use with other alloys (e.g., Inconel, titanium) requires a material-specific calibration curve. Contact us for calibration support.
Q: What is the difference between the 330905 and 330900 series?
A: The 330905 series uses the NSv (Non-contacting Vibration) platform with enhanced EMI shielding and updated connector design. The 330900 series is the legacy XL 8mm platform. Both are electrically compatible with 330180-series proximitors.
Q: Do you offer expedited shipping for critical plant shutdowns?
A: Yes. Contact support@konmask.com or call +0086 19859288691 to discuss emergency fulfillment options.
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Contact: support@konmask.com | +0086 19859288691
