Description
Bently Nevada 330905‑00‑12‑05‑02‑00 — 3300‑XL NSv Eddy‑Current Proximity Probe
Product Overview
The 330905‑00‑12‑05‑02‑00 belongs to Bently Nevada 3300‑XL NSv proximity probe family. NSv series features improved side‑view performance and works well for small‑diameter shaft targets and confined counter‑bore installation spaces where standard 3300‑XL 8 mm probes cannot fit. It is the non‑contact sensing element for NSv transducer system, paired exclusively with 330980‑series NSv proximitor sensor and 330930‑series NSv extension cables. It converts gap variation between probe tip and metallic rotating target into impedance signals for proximitor conditioning. Complies with API 670, widely used for compressors and rotating machinery with tight mechanical installation constraints.
330905-00-12-05-02-00
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | 330905‑00‑12‑05‑02‑00 |
| Series | 3300‑XL NSv Proximity Probe |
| Probe Tip Diameter | 8 mm (NSv small‑target optimized) |
| Probe Body Thread | M10 ×1 male full‑thread (00=full thread body) |
| Probe Body Length | 12 mm |
| Integral Pigtail Cable Length | 0.5 m |
| Connector Type | 02‑option ClickLoc miniature coaxial connector (non‑Microdot) |
| Scale Factor | 7.87 V/mm (200 mV/mil), calibrated for AISI‑4140 steel target |
| Linear Measurement Range | 1.5 mm (60 mils) (shorter than standard 8 mm XL probe) |
| Frequency Response | 0 Hz ~ 10 kHz |
| Operating Temperature Range | ‑52 °C ~ +177 °C |
| Certifications | CE, ATEX, IECEx, CSA intrinsic‑safety approvals |
| Housing Material | Stainless‑steel body, PPS probe tip insulator |
| Calibration Target | Factory calibrated on AISI‑4140 steel |
| Country of Origin | USA |
| Weight | ≈0.14 kg |
Main Features
- 3300‑XL NSv full‑thread probe, API‑670 compliant: Only interoperable with NSv proximitor & NSv extension cables; strictly separate from standard 3300‑XL 8 mm/11 mm hardware.
- M10×1 full‑thread 12 mm short body: Optimized for shallow counter‑bore and tight installation envelope.
- Enhanced side‑view & small‑target performance: Suitable for shaft diameter below 51 mm (2‑inch) and small flat axial‑target applications where standard 8 mm probes produce large reading error.
- 0.5 m short integral pigtail: Flexible for field routing, requires NSv extension cable to complete system length.
- 1.5 mm (60 mils) linear range: Reduced linear stroke compared to standard 8 mm 3300‑XL probe; set operating gap near mid‑range.
- Wide operating temperature:‑52 °C ~ +177 °C, fit for compressor and turbine casing environment.
- Stainless‑steel robust housing, PPS tip material: Anti‑vibration, oil‑mist and chemical resistant for heavy‑duty machinery compartments.
- ClickLoc miniature coaxial connector: Distinct from Microdot; mates only with 330930 NSv extension cables.
- Intrinsic‑safety approvals: Qualified for ATEX / IECEx hazardous zones when deployed within complete certified NSv proximity loop.
Typical Application Scenarios
- Centrifugal air‑compressors, process‑gas compressors, refrigeration compressors with tight counter‑bore constraints
- Rotating machinery with small‑diameter shafts (<51 mm) or small flat axial thrust targets
- Sites where side‑view / rear‑view mechanical obstruction prevents standard 3300‑XL probe installation
- Off‑shore platform rotating‑machinery condition‑monitoring
- Hazardous‑classified locations requiring ATEX / IECEx intrinsic‑safety certification
- Spare‑part replacement for existing 3300‑XL NSv proximity measurement channels
Related & Recommended Alternative Models
| Model | Description |
|---|---|
| 330905‑00‑16‑05‑02‑00 | NSv probe,16 mm full‑thread body,0.5 m pigtail,ClickLoc connector |
| 330905‑00‑22‑05‑02‑00 | NSv probe,22 mm full‑thread body,0.5 m pigtail,ClickLoc connector |
| 330930‑xx‑xx‑00 | 3300‑XL NSv series extension cable (ClickLoc interface) |
| 330980‑51‑05 | NSv proximitor,5 m total‑system length,DIN‑rail mount |
| 330980‑71‑05 | NSv proximitor,7 m total‑system length,DIN‑rail mount |
| 330980‑91‑05 | NSv proximitor,9 m total‑system length,DIN‑rail mount |
Compatible Components & Accessories
- NSv extension cables: 330930‑xx‑xx‑00 series. Total system length = probe 0.5 m + NSv extension cable = NSv proximitor rated length. Do NOT use 330130‑xx‑xx‑00 standard‑XL extension cables.
- Matched NSv proximitor: 330980‑51‑05 /71‑05 /91‑05 DIN‑rail NSv proximitor.
- Monitor hardware: Bently 3500/42M, 3300/12, 3300/15 monitor racks.
- Mounting parts: M10×1 lock‑nut for NSv probe installation.
- Calibration test fixture: NSv‑compatible static gap calibration rig for pre‑commission check.
- Torque wrench: For correct ClickLoc connector torque during assembly.
Installation and Configuration Guide
Warning: Installation must be performed by qualified instrumentation technicians. Always refer to original Bently Nevada 3300‑XL NSv official manual as primary reference document.
- Mechanical Probe Mounting
- Thread probe into M10×1 casing bore hole; fit lock‑nut for position locking after gap adjustment.
- Probe tip must keep perpendicular to metallic shaft target; tilt will degrade side‑view performance and linear accuracy.
- Guarantee mechanical clearance, avoid tip‑shaft collision under full shaft operating excursion.
- Note: NSv linear range is only 1.5 mm, so working gap setup window is narrower than standard 8 mm probes.
- System‑Length Verification
- Probe integral cable =0.5 m. Select NSv‑type extension cable (330930 series) so sum matches NSv proximitor rated total‑system length. Mismatch will alter scale factor.
- Torque ClickLoc connector to manufacturer‑specified torque; do not over‑tighten. Never connect / disconnect coaxial connectors under powered proximitor.
- Signal Routing Requirements
- Separate probe coaxial cable from high‑power AC cables, contactors and VFD cables to minimize EMI noise.
- Observe minimum cable bending radius; prevent sharp kinks damaging inner coaxial structure.
- Commissioning Gap Adjustment
- Loosen lock‑nut, adjust probe in/out to set mechanical gap to target shaft.
- Power on NSv proximitor, measure DC gap‑voltage with high‑impedance multimeter. Set working point near mid‑range (approx.‑10 VDC for AISI‑4140 steel).
- Tighten lock‑nut securely, re‑check gap‑voltage to confirm no position shift. Confirm operating point stays within NSv linear zone (‑2 VDC ~ ‑14 VDC for 1.5 mm linear range).
- Monitor Channel Setup
- Input gap‑voltage signal to monitor channel, set scale factor to 7.87 V/mm (200 mV/mil) for NSv probe.
- Configure alarm & trip thresholds strictly following rotating‑machine OEM documentation.
- Perform loop test, validate Not‑OK fault indication by simulating probe open‑circuit condition.
- Maintenance & Troubleshooting
- Inspect ClickLoc connector for dirt, corrosion and loose contact during machinery turnaround.
- Monitor gap‑voltage drift; readjust probe gap if deviation occurs.
- Not‑OK fault: check probe‑tip damage, cable breakage or connector failure. Probe is non‑repairable on‑site; replace full assembly.
- Hazardous‑Area Installation Notes
- For ATEX / IECEx hazardous‑location installation, strictly follow 3300‑XL NSv intrinsic‑safety requirements for cable specification, grounding and enclosure rating.
Supplementary Remark
330905‑00‑12‑05‑02‑00 is short‑body full‑thread 3300‑XL NSv proximity probe, equipped with 0.5 m pigtail and ClickLoc connector. It features small‑target & improved side‑view capability but shorter 1.5 mm linear range. Cannot interoperate with standard 3300‑XL 8 mm /11 mm proximitors or extension cables. Prior to installation, verify part number, M10×1 full‑thread, body length, pigtail length and ClickLoc connector versus project BOM and mechanical drawing.
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