Bently Nevada 21000-33-05-00-035-03-02 – Proximity Probe Housing Assembly | 3300 XL Series Platform
Engineering Background: The Bently Nevada 3300 XL Series represents the industry benchmark for continuous machinery protection in rotating equipment applications. Designed for high-reliability environments where unplanned downtime carries significant operational and safety consequences, the 3300 XL platform is deployed across power generation, oil & gas, petrochemical, and heavy industrial facilities worldwide.
Product Positioning: The 21000-33-05-00-035-03-02 is a precision-engineered Proximity Probe Housing Assembly purpose-built for the 3300 XL monitoring system. It provides the mechanical interface and environmental protection required for eddy-current proximity probes operating in harsh industrial conditions — ensuring signal integrity, alignment stability, and long-term measurement accuracy for radial vibration, axial position, and differential expansion monitoring.
Complete Technical Specifications
| Part Number | 21000-33-05-00-035-03-02 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Series / Platform | 3300 XL Proximity Transducer System |
| Product Type | Proximity Probe Housing Assembly |
| Probe Tip Diameter | 8 mm (standard 3300 XL compatible) |
| Thread Size | M10 × 1.0 (metric, standard) |
| Housing Material | 316 Stainless Steel |
| Cable Length | Per assembly configuration (see part suffix) |
| Operating Temperature | –40 °C to +177 °C (–40 °F to +350 °F) |
| IP Rating | IP67 (dust-tight, immersion-resistant) |
| Connector Type | BNC / integral per assembly spec |
| Approvals | CE, ATEX, FM (per system configuration) |
| Weight | 1,400 g (assembly) |
| Country of Origin | USA |
| HS Code | 9031.80 |
Proven Application Environments
- Steam & Gas Turbines — Radial shaft vibration and axial thrust position monitoring
- Centrifugal Compressors — High-speed rotor dynamics measurement in API 670-compliant systems
- Pumps & Fans — Continuous bearing health monitoring in critical service
- Gearboxes — Differential expansion and eccentricity measurement
- Power Generation — Turbine-generator sets in baseload and peaking plants
- Offshore Platforms — Marine-grade corrosion resistance for subsea-adjacent installations
Engineering Advantages
- OEM-Identical Geometry — Drop-in replacement with no field modification required; maintains original calibration gap and sensitivity
- 316 SS Construction — Superior corrosion resistance versus standard 304 SS in H₂S, chloride, and high-humidity environments
- Vibration-Resistant Assembly — Locknut and anti-rotation features prevent probe migration under continuous dynamic loading
- Broad Temperature Range — Qualified from cryogenic to high-temperature service without performance degradation
- API 670 Compliant — Meets machinery protection standard for critical and essential service rotating equipment
- Long MTBF — Passive mechanical assembly with no wear components; service life exceeds 10 years in typical installations
System Architecture & Signal Flow
The 21000-33-05-00-035-03-02 housing assembly integrates within the Bently Nevada 3300 XL transducer chain as follows:
Rotating Shaft → Probe Tip (eddy-current field) → Probe Housing Assembly [this part] → Extension Cable → Proximitor® Sensor → 3500 / 3300 Monitor Rack → DCS / Safety System
The housing maintains the critical air gap between probe tip and target surface, provides mechanical protection against process fluid ingress, and ensures coaxial cable routing integrity to preserve signal-to-noise ratio across the full measurement bandwidth (DC to 10 kHz typical).
Sourcing & Quality Verification
- All units sourced from authorized distribution channels or verified surplus with full traceability documentation
- Pre-shipment inspection includes dimensional verification, thread gauge check, and visual inspection per IPC-A-610 criteria
- Certificate of Conformance (CoC) available upon request
- Serialization and date code records maintained for full supply chain traceability
- Counterfeit-mitigation screening applied to all Baker Hughes / Bently Nevada branded components
Procurement Process
- Confirm Part Number — Verify 21000-33-05-00-035-03-02 against your BOM or existing installation tag
- Request Quote — Contact [email protected] for volume pricing, lead time, and availability confirmation
- Submit PO — Standard Net 30 terms available for qualified industrial accounts; T/T, L/C accepted
- Shipping — DHL Express / FedEx International Priority; EXW Xiamen or DAP destination available
- Documentation — Commercial Invoice, Packing List, CoC, and HS 9031.80 export classification provided
Technical FAQ
Q: Is this assembly compatible with the Bently Nevada 3500 monitoring system?
A: Yes. The 3300 XL proximity transducer system is fully compatible with the 3500 Series monitor racks when used with the appropriate Proximitor® sensor. Verify the extension cable length and connector type match your existing installation.
Q: What is the standard linear range for this probe configuration?
A: The 3300 XL 8 mm probe system provides a linear range of approximately 0.25 mm to 2.25 mm (10 to 90 mil) gap, with a nominal sensitivity of 7.87 V/mm (200 mV/mil).
Q: Can this housing be used in ATEX Zone 1 classified areas?
A: ATEX certification depends on the complete transducer assembly configuration. Contact our engineering team with your hazardous area classification for confirmation of applicable certificates.
Q: What is the lead time for this part?
A: In-stock units ship within 1–3 business days. For out-of-stock scenarios, typical lead time is 2–4 weeks. Contact us for real-time availability.
Q: Do you provide installation and commissioning support?
A: Konmask provides technical documentation, installation drawings, and remote engineering support. On-site commissioning services can be arranged through our partner network.
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