Turbomachinery Vibration Monitoring Solution – Bently Nevada 330906-02-12-05-02-00 | NSv Series
Where This Product Is Used
The Bently Nevada 330906-02-12-05-02-00 NSv Reverse Mount Proximity Probe is engineered for continuous, non-contact shaft vibration and position measurement in rotating machinery. Typical deployment environments include:
- Steam and gas turbines in power generation plants
- Centrifugal compressors in oil & gas upstream and midstream facilities
- Boiler feed pumps and large industrial pumps
- Gearboxes and expanders in petrochemical processing
- Marine propulsion shafting systems
- Critical rotating equipment requiring API 670 compliance
The reverse-mount configuration is specifically selected when standard front-mount installation is geometrically constrained by bearing housings, seals, or structural members — a common challenge in retrofit and upgrade projects on legacy turbomachinery.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 330906-02-12-05-02-00 |
| Series | NSv (Non-contacting Vibration) |
| Mount Type | Reverse Mount |
| Probe Length | 12 in (305 mm) — encoded in part number position 3 |
| Cable Length | 5 m extension (encoded in part number position 4) |
| Output | -18 V DC nominal (eddy-current, requires Bently Nevada driver/proximitor) |
| Sensitivity | 200 mV/mil (7.87 V/mm) |
| Linear Range | Approx. 80 mil (2 mm) — target material dependent |
| Frequency Response | DC to 10,000 Hz |
| Temperature Range | -35°C to +177°C (probe tip) |
| Connector | Integral coaxial, reverse-exit |
| Approvals | CE, ATEX, IECEx (consult datasheet for zone ratings) |
| Compatible Systems | 3300, 3500, System 1 Machinery Management |
Why Engineers Specify This Model
- Reverse-exit cable routing eliminates interference with adjacent bearing housings and allows clean cable management in tight machine envelopes.
- NSv series linearity delivers consistent output across a wide range of shaft materials (4140 steel, 17-4 PH, Inconel) without recalibration.
- Drop-in compatibility with existing Bently Nevada 3300 and 3500 series monitor racks — no firmware changes required.
- API 670 4th/5th Edition compliance satisfies machinery protection requirements for critical equipment in refinery and power plant applications.
- Proven MTBF in continuous 24/7 operation environments with minimal maintenance intervals.
Complete System Bill of Materials
For a fully functional eddy-current measurement loop, the following components are required alongside the 330906-02-12-05-02-00 probe:
- Extension Cable: Bently Nevada 330130 series (matched to probe cable length)
- Proximitor / Driver: Bently Nevada 3300 XL 8mm or 3300 RAM (rack-mount)
- Monitor Rack: Bently Nevada 3500/40M or 3500/42M Proximitor Monitor
- Power Supply: -24 VDC regulated (Bently Nevada 3500/15 or equivalent)
- Mounting Hardware: Reverse-mount probe holder (customer-supplied per machine drawing)
Contact Konmask.com for complete loop pricing and availability.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (4th & 5th Edition)
- IEC 61511 — Functional Safety for Process Industry
- ATEX Directive 2014/34/EU (zone classification per datasheet)
- IECEx Scheme — International Explosive Atmospheres
- CE Marking — EU market conformity
- ISO 10816 / ISO 20816 — Mechanical vibration evaluation
Quality Assurance & Sourcing
Konmask.com sources the Bently Nevada 330906-02-12-05-02-00 through verified industrial automation supply channels. Every unit is:
- Inspected for physical integrity and connector condition prior to dispatch
- Shipped with original manufacturer documentation where available
- Traceable to batch/lot records for quality audit purposes
- Packaged in anti-static, moisture-resistant materials for safe international transit
We do not supply counterfeit, refurbished-as-new, or unverified grey-market parts. If you require a Certificate of Conformance (CoC) or material traceability documentation, please contact us before ordering.
How to Source This Part
- Add to cart directly on this page for standard lead times.
- Request a quote for volume orders (>3 units) or project-based procurement — email support@konmask.com.
- Urgent requirement? Call or WhatsApp +0086 19859288691 for expedited sourcing and same-day quotation.
- Cross-reference needed? Provide your existing part number or machine OEM drawing number and our team will confirm compatibility.
Application-Specific FAQ
Q: Can the 330906-02-12-05-02-00 be used with a 3500 series monitor without a proximitor?
A: No. The probe requires a Bently Nevada proximitor/driver (e.g., 3300 RAM or 3300 XL) to condition the eddy-current signal before it enters the 3500 monitor rack.
Q: What shaft materials are compatible?
A: The NSv probe is calibrated for AISI 4140 steel. For non-standard materials (Inconel, titanium, duplex stainless), a material correction factor or field calibration is required per API 670 Annex D.
Q: Is the reverse-mount version interchangeable with the standard front-mount 330905 series?
A: Electrically yes — the output signal and sensitivity are identical. Mechanically, the cable exit direction is reversed, so the mounting bracket and cable routing must be adapted accordingly.
Q: What is the typical lead time?
A: In-stock units ship within 1–3 business days. Out-of-stock items are sourced within 7–21 business days depending on supply chain availability. Contact us for real-time stock status.
Q: Do you provide installation support?
A: Konmask.com provides pre-sales technical consultation and installation documentation. On-site commissioning services can be arranged through our partner network.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
