Turbine & Compressor Vibration Monitoring Solution – Bently Nevada 330908-00-90-05-02-CN | 3300 NSv Series
Where This Product Is Used
The Bently Nevada 330908-00-90-05-02-CN is a 9 mm eddy-current proximity probe from the 3300 NSv series, engineered for continuous, non-contact shaft vibration and position measurement in rotating machinery. Typical deployment environments include:
- Steam & Gas Turbines – radial shaft vibration monitoring per API 670
- Centrifugal & Axial Compressors – real-time rotor displacement in petrochemical and LNG plants
- Pumps & Fans – bearing journal orbit analysis in power generation facilities
- Gearboxes – gear mesh frequency and shaft eccentricity detection
- Marine Propulsion Systems – shaft alignment verification on diesel and gas-turbine vessels
- Paper & Steel Mills – roll and spindle runout measurement in continuous-process lines
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330908-00-90-05-02-CN |
| Series | 3300 NSv (Non-Standard Voltage) |
| Probe Tip Diameter | 9 mm (0.354 in) |
| Cable Length | 5 m (16.4 ft) |
| Connector | CN (Chinese standard, MIL-spec compatible) |
| Sensing Technology | Eddy-current (non-contact) |
| Linear Range | 0.25 – 2.25 mm (10 – 90 mil) |
| Scale Factor | 7.87 V/mm (200 mV/mil) nominal |
| Frequency Response | DC – 10 kHz (–3 dB) |
| Operating Temperature | –35 °C to +177 °C (probe body) |
| Supply Voltage | –24 VDC (via 3300 XL driver) |
| Output | –2 to –18 VDC (into 10 kΩ load) |
| Target Material | AISI 4140 steel (standard); other alloys with recalibration |
| Housing Material | 316 stainless steel |
| Weight | ~60 g |
| Approvals | CE, ATEX Zone 1 (with barrier), CSA |
Why Engineers Specify This Model
- NSv (Non-Standard Voltage) output – wider dynamic range reduces clipping risk on high-vibration machinery
- 9 mm tip – optimal sensitivity-to-gap ratio for shafts 25–150 mm in diameter
- 5 m integral cable – eliminates an extension cable junction, reducing signal noise in high-EMI environments
- CN connector – direct compatibility with domestically sourced junction boxes and Chinese-standard terminal blocks
- 316 SS housing – resists H₂S, steam, and process fluid ingress in refinery and offshore environments
- Drop-in replacement for legacy 330900 series probes with no reconfiguration of the 3300 XL monitor required
Complete System Bill of Materials
For a fully functional 3300 NSv measurement channel, the following components are required:
- Probe: 330908-00-90-05-02-CN (this item)
- Extension Cable: 330130-080-00-00 (8 m) or 330130-045-00-00 (4.5 m) – if total cable run > 5 m
- Driver / Oscillator: 330180-91-00 (3300 XL 8 mm driver, NSv output)
- Monitor: 3300/16-XX-XX-XX-XX (3300 XL 16-channel monitor rack)
- Barrier (hazardous areas): MTL 787S+ or equivalent Zener barrier
- Mounting Hardware: 02-262788-01 probe holder, 330185-01 lock nut
Compliance & Industry Standards
- API 670 – Machinery Protection Systems (5th Edition)
- ISO 10816 / ISO 20816 – Mechanical vibration measurement on non-rotating parts
- IEC 60079-0 / IEC 60079-11 – Equipment for explosive atmospheres (with approved barrier)
- CE Marking – EMC Directive 2014/30/EU
- CSA C22.2 No. 157 – Intrinsically safe and non-incendive equipment
- GB/T 13283 – Chinese national standard for industrial sensors
Quality Assurance & Sourcing
Every unit offered by Konmask.com undergoes the following verification process before dispatch:
- Visual inspection against Bently Nevada OEM packaging and label standards
- Continuity and insulation resistance check on probe cable and connector
- Scale factor verification using calibrated gap-setting fixture (target: 7.87 ± 0.39 V/mm)
- Traceability documentation: batch number, date code, and country of manufacture recorded
- Sourced from authorized distributors and verified surplus channels; no counterfeit-risk grey-market supply
How to Source This Part
- Add to cart and complete checkout – stock ships within 1–3 business days from our Xiamen warehouse.
- Request a quote for volume orders (>5 units) or project BOM packages – email support@konmask.com.
- Urgent requirement? Call or WhatsApp +0086 198 5928 8691 for same-day availability confirmation.
- Cross-reference needed? Provide your existing part number or monitor model and our engineers will confirm compatibility.
Application-Specific FAQ
Q: Can this probe be used with a 3500 series monitor?
A: No. The 330908 series is calibrated for the 3300 XL driver/monitor system. For 3500 series monitors, specify the 330730 or 330780 probe family.
Q: What is the maximum shaft speed this probe can monitor?
A: The 10 kHz frequency response supports shaft speeds up to 600,000 RPM for 1× vibration measurement, well beyond the range of most industrial turbomachinery.
Q: Is recalibration required when targeting non-steel shafts (e.g., Inconel, titanium)?
A: Yes. Eddy-current sensitivity varies with target material conductivity and permeability. Bently Nevada provides material correction factors; contact us for application-specific calibration support.
Q: Can the 5 m cable be extended?
A: Yes, using a Bently Nevada 330130-series extension cable. Total probe + extension cable length must match the driver’s calibrated range (typically 5 m or 9 m total).
Q: Is this part suitable for ATEX Zone 1 hazardous areas?
A: Yes, when used with an approved Zener barrier or galvanic isolator. The probe itself is passive; the intrinsic safety rating applies to the complete loop including driver and barrier.
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Contact: support@konmask.com | +0086 19859288691
