Turbine & Rotating Machinery Vibration Monitoring Solution — Bently Nevada 21000-28-10-00-094-04-02 | 3300 XL Series
Where This Product Is Used
The Bently Nevada 21000-28-10-00-094-04-02 Proximity Probe Housing Assembly is engineered for continuous, non-contact vibration and position measurement in high-reliability rotating machinery environments. Typical deployment sites include:
- Steam & Gas Turbines — shaft radial vibration and eccentricity monitoring at bearing journals
- Centrifugal Compressors — rotor dynamic displacement measurement in petrochemical and LNG plants
- Pumps & Fans — continuous shaft orbit and position tracking in power generation and water treatment
- Gearboxes — gear mesh frequency and radial load monitoring in heavy industry
- Expanders & Turbomachinery — API 670-compliant machinery protection systems in refineries and offshore platforms
Technical Specifications
| Part Number | 21000-28-10-00-094-04-02 |
| Brand | Bently Nevada (Baker Hughes) |
| Series | 3300 XL Proximity Transducer System |
| Product Type | Proximity Probe Housing Assembly |
| Probe Diameter | 8 mm (standard) |
| Cable Length | 1.0 m (extension cable compatible) |
| Thread | M10 × 1 (metric) |
| Housing Material | Stainless Steel |
| Temperature Range | −40 °C to +177 °C |
| Sensitivity | 7.87 V/mm (200 mV/mil) |
| Linear Range | 0.25 mm to 2.54 mm (10 to 100 mil) |
| Supply Voltage | −24 VDC (nominal) |
| Weight | 1,080 g (assembly) |
| Approvals | CE, ATEX, IECEx (consult datasheet for zone ratings) |
Why Engineers Specify This Model
- API 670 Compliance — meets the industry standard for machinery protection systems, accepted by EPC contractors and end-users globally
- Plug-and-Play with 3300 XL Monitors — direct compatibility with Bently Nevada 3300 XL series monitors eliminates calibration uncertainty
- Stainless Steel Housing — corrosion-resistant construction withstands aggressive process environments including H₂S, steam, and hydrocarbon atmospheres
- High-Temperature Stability — rated to +177 °C for hot-section turbine bearing applications without signal drift
- Non-Contact Measurement — zero mechanical wear, enabling continuous 24/7 operation without scheduled probe replacement
- Proven Field Reliability — Bently Nevada proximity systems are the de facto standard in turbomachinery protection worldwide
Complete System Bill of Materials
For a fully functional 3300 XL proximity measurement loop, the following components are typically required:
- Proximity Probe Housing Assembly — 21000-28-10-00-094-04-02 (this item)
- Extension Cable — 330130-xxx-xx-CN (length to suit installation)
- Proximitor / Signal Conditioner — 3300 XL 8 mm Proximitor (e.g., 330180-X1-05)
- Monitor Module — 3500/40M Proximitor / Seismic Monitor or equivalent 3300 XL rack card
- Mounting Hardware — locknut, jam nut, and bracket per API 670 Annex D
Contact Konmask.com for complete loop pricing and availability.
Compliance & Industry Standards
- API 670 — Machinery Protection Systems (5th Edition)
- IEC 61511 — Functional Safety for SIS applications
- ATEX Directive 2014/34/EU — Equipment for explosive atmospheres
- IECEx — International certification for hazardous area equipment
- CE Marking — European conformity
Quality Assurance & Sourcing
All Bently Nevada components supplied by Konmask.com are sourced through verified industrial distribution channels. Each unit undergoes incoming inspection including:
- Visual and dimensional verification against OEM drawings
- Sensitivity and linearity functional check (200 mV/mil ± 1%)
- Traceability documentation — lot number, date code, and certificate of conformance available on request
- Original manufacturer packaging preserved where possible
How to Source This Part
- In-Stock Orders: Add to cart and check out — ships within 2 business days from our warehouse
- Bulk / Project Quantities: Email support@konmask.com for volume pricing and lead-time confirmation
- Urgent Shutdown Requirements: Call +0086 198 5928 8691 for expedited sourcing support
- Cross-Reference / Replacement: Provide your existing part number and we will confirm compatibility before shipment
Application-Specific FAQ
Q: Is 21000-28-10-00-094-04-02 compatible with the Bently Nevada 3500 rack system?
A: The 3300 XL probe series is primarily designed for 3300 XL monitors. For 3500 rack compatibility, verify the Proximitor model and gap voltage requirements with your system integrator or contact us for a compatibility check.
Q: What is the recommended gap voltage for this probe?
A: The nominal gap is set to −10 VDC (approximately 1.27 mm / 50 mil) for standard steel targets per Bently Nevada installation guidelines.
Q: Can this housing assembly be used in a hazardous area (Zone 1 / Division 1)?
A: Yes, subject to ATEX/IECEx certification verification for the specific zone classification. Consult the product datasheet and your site safety authority before installation.
Q: Do you supply calibration certificates?
A: Certificate of conformance is available on request. NIST-traceable calibration reports can be arranged for an additional fee.
Q: What is the lead time if the item is out of stock?
A: Typical sourcing lead time is 2–4 weeks. Contact us early for shutdown planning to avoid delays.
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Contact: support@konmask.com | +0086 19859288691
