Turbomachinery Vibration Monitoring Solution – Bently Nevada 31000-28-10-00-087-03-02 | 3300 Series
Where This Product Is Used
The Bently Nevada 31000-28-10-00-087-03-02 Proximity Probe Housing Assembly is engineered for continuous, non-contact vibration and position measurement in rotating machinery environments. Typical deployment sites include:
- Steam & Gas Turbines — shaft radial vibration monitoring at bearing journals
- Centrifugal Compressors — rotor dynamic displacement measurement in petrochemical and LNG plants
- Pumps & Fans — axial position and eccentricity monitoring in power generation facilities
- Gearboxes — gear mesh frequency analysis and shaft orbit measurement
- Electric Motors (large frame) — air-gap monitoring and rotor runout detection
- Marine Propulsion Systems — shaft alignment verification and thrust position monitoring
This housing assembly provides the mechanical interface that positions the eddy-current probe tip at the precise radial gap from the target shaft, ensuring repeatable, calibrated measurements across the full operating temperature and pressure range of the machine.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | 31000-28-10-00-087-03-02 |
| Series | Bently Nevada 3300 XL / 3300 Series |
| Product Type | Proximity Probe Housing Assembly |
| Probe Thread Size | M10 × 1 (metric, standard) |
| Housing Material | 316 Stainless Steel (corrosion-resistant) |
| Cable Length | Per part number suffix (03 = 3 m extension) |
| Temperature Range | −40 °C to +177 °C (−40 °F to +350 °F) |
| Ingress Protection | IP67 (dust-tight, immersion-resistant) |
| Connector Type | Integral coaxial, armored cable |
| Sensitivity | 7.87 V/mm (200 mV/mil) nominal |
| Linear Range | 0.25 mm – 2.26 mm (10 – 89 mil) |
| Weight | ~1,200 g (assembly with cable) |
| Compatible Monitor | Bently Nevada 3300, 3500 Series Rack Systems |
Why Engineers Specify This Model
- Drop-in Replacement Compatibility — Direct OEM form-factor match for existing 3300 Series installations; no re-cabling or re-calibration of the monitor rack required.
- High-Temperature Stability — Stainless steel housing and armored cable maintain calibration integrity in hot-section turbine environments up to 177 °C.
- Corrosion Resistance — 316 SS construction withstands H₂S, chloride-laden atmospheres, and wash-down environments common in offshore and chemical plants.
- Factory-Calibrated Assembly — Each unit ships with a calibration certificate traceable to NIST standards, eliminating field calibration time during planned outages.
- Armored Cable Protection — Stainless steel braid armor resists mechanical damage in congested machinery spaces and high-vibration zones.
- Long Service Life — Non-contact eddy-current technology means zero mechanical wear; MTBF exceeds 100,000 hours in typical turbomachinery service.
Complete System Bill of Materials
For a complete Bently Nevada proximity probe measurement loop, the following components are typically required:
- Proximity Probe Housing Assembly — 31000-28-10-00-087-03-02 (this item)
- Extension Cable — Bently Nevada 330130 Series (length matched to installation gap)
- Proximitor® Sensor / Driver — Bently Nevada 3300 XL 8mm Proximitor (e.g., 330180-X1-05)
- Monitor Module — Bently Nevada 3500/40M Proximitor/Seismic Monitor or 3500/42M
- Rack & Power Supply — Bently Nevada 3500 Rack with 3500/15 Power Supply
- Keyphasor® Probe — Bently Nevada 330900 Series (for phase reference, if required)
Contact [email protected] for complete loop pricing and compatibility verification.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition): probe, extension cable, and driver system meets API 670 requirements for turbomachinery protection.
- IEC 61511 — Functional Safety (SIL-rated loops when integrated with certified 3500 Series monitors).
- ATEX / IECEx — Housing assembly suitable for use in Zone 1 & Zone 2 hazardous areas (verify driver certification for complete loop approval).
- ISO 10816 / ISO 20816 — Mechanical vibration measurement on non-rotating parts; system output compatible with ISO evaluation criteria.
- RoHS Compliant — Materials comply with EU Directive 2011/65/EU on restriction of hazardous substances.
Quality Assurance & Sourcing
Konmask.com sources Bently Nevada components through verified industrial distribution channels. Every unit undergoes the following before shipment:
- Visual and dimensional inspection against OEM drawings
- Continuity and insulation resistance test on cable assembly
- Verification of part number label against physical configuration
- Anti-static packaging with desiccant for long-term storage integrity
- Photographic documentation available upon request
All products are supplied with original manufacturer documentation where available. Warranty claims are processed in accordance with Bently Nevada / Baker Hughes standard terms.
How to Source This Part
- Add to Cart — Click “Add to Cart” above and proceed to checkout for standard stock orders.
- Request a Quote — For volume orders (>3 units), OEM project procurement, or EPC contractor pricing, email [email protected] with your project PO number.
- Expedite / Emergency Orders — Call or WhatsApp +0086 19859288691 for same-day shipping confirmation on critical plant outage situations.
- Cross-Reference Check — If you are unsure whether this part number matches your existing installation, send us your current probe assembly part number and we will confirm compatibility before you order.
Application-Specific FAQ
Q: Is the 31000-28-10-00-087-03-02 compatible with the Bently Nevada 3500 Series monitor rack?
A: Yes. The 3300 Series probe and extension cable system is fully compatible with 3500 Series Proximitor drivers and monitor modules when used with the correct driver (e.g., 330180 Series). Verify the driver gap voltage range matches your installation gap.
Q: What is the recommended installation gap for this probe?
A: The standard linear range is 0.25 mm to 2.26 mm (10–89 mil). The nominal installation gap is typically set at the midpoint of the linear range — approximately 1.0–1.27 mm (40–50 mil) — per API 670 guidelines.
Q: Can this housing assembly be used in a hydrogen-cooled generator application?
A: The stainless steel housing is compatible with hydrogen atmospheres. However, the complete loop (including driver and cabling) must be reviewed for ATEX/IECEx certification requirements specific to hydrogen Zone 0/1 environments. Contact us for application engineering support.
Q: Do you supply calibration certificates with this part?
A: Factory calibration documentation is included where available from the original manufacturer. If a site-specific calibration certificate is required, we can arrange third-party calibration services prior to shipment.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. For out-of-stock situations, typical lead time is 4–8 weeks from Bently Nevada / Baker Hughes. Contact us for current stock status before placing a time-critical order.
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Contact: [email protected] | +0086 19859288691
