Bently Nevada 21000-28-05-00-040-04-02 Proximity Probe
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Key Product Information
Core fields for model confirmation and RFQ routing. Detailed product narrative remains below.
- Brand
- Bently Nevada
- Primary Part Number
- 21000-28-05-00-040-04-02
- Product Type
- Proximity Probe
- Series / Family
- 3500 Series
- Country of Origin
- US
- Catalog Category
- Sensors & Switches
- Operating Temp.
- −35°C to +177°C
- Warranty
- 12 months from date of shipment against manufacturing defects
- Compliance
- CE, RoHS; ATEX/IECEx variants available on request
Bently Nevada 21000-28-05-00-040-04-02 — Strategic Procurement of a Mission-Critical Rotating Machinery Sensor
For procurement managers and reliability engineers operating rotating equipment in power generation, petrochemical, or LNG facilities, the Bently Nevada 21000-28-05-00-040-04-02 is not simply a line item — it is a load-bearing element of your machinery protection architecture. This 28 mm eddy-current proximity probe housing assembly is purpose-built for continuous, non-contact shaft displacement and radial vibration measurement, and it integrates directly into Bently Nevada 3300 and 3500 series monitoring racks without configuration changes.
At siemensplc.com, we approach this part from a supply chain standpoint: the 21000 series is a mature, widely deployed platform with a global installed base spanning decades of turbomachinery installations. That installed base creates two realities simultaneously — steady secondary market availability for standard configurations, and acute scarcity for specific sub-variants when OEM lead times stretch into months. Our sourcing desk maintains active relationships with authorized distributors, certified surplus channels, and in-region stocking partners to ensure your procurement cycle does not become your plant’s single point of failure.
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Procurement Specifications
| Part Number | 21000-28-05-00-040-04-02 |
| Brand | Bently Nevada (Baker Hughes) |
| Series | 21000 Proximity Probe System |
| Probe Tip Diameter | 28 mm |
| Cable Length | 5 m |
| Sensing Technology | Eddy-current, non-contact |
| Scale Factor | 200 mV/mil (7.87 V/mm), factory-calibrated |
| Nominal Gap Voltage | −10 VDC at 1.5 mm gap; linear range −2 to −18 VDC |
| Operating Temperature | −35°C to +177°C |
| Ingress Protection | IP67 |
| Monitor Compatibility | Bently Nevada 3300 Series, 3500 Series, 3701 Series |
| Connector Type | Standard Bently Nevada coaxial |
| Compliance | CE, RoHS; ATEX/IECEx variants available on request |
| Weight | Approx. 1,400 g (complete assembly) |
| Country of Origin | United States |
| Typical Lead Time | In-stock units: 3–7 business days ex-Xiamen. Standard sourcing: 2–4 weeks. Extended or ATEX variants: 6–10 weeks. Expedited options available — contact us for confirmation. |
| Warranty | 12 months from date of shipment against manufacturing defects |
Total Cost of Ownership (TCO) Analysis
Procurement decisions for rotating machinery instrumentation are rarely evaluated on unit price alone. The true cost of a proximity probe assembly surfaces across three phases of its operational life: acquisition, integration, and failure response. Understanding each phase is how experienced procurement teams avoid the traps that inflate CAPEX and erode OPEX budgets.
Acquisition cost vs. sourcing risk: The 21000-28-05-00-040-04-02 is a high-specificity part. Its 28 mm tip diameter, 5 m cable, and -02 revision code narrow the field of compatible inventory considerably. Sourcing from a single-channel supplier — particularly one without regional stocking — exposes your procurement cycle to OEM backlog risk. A 12-week OEM lead time on a part that sits in a critical turbine protection loop is not a procurement inconvenience; it is a potential forced outage. siemensplc.com maintains multi-source access to reduce that exposure, and our pricing reflects volume-consolidated purchasing rather than spot-market premiums.
Integration cost: Unlike generic sensor substitutes, the OEM 21000-28-05-00-040-04-02 is factory-calibrated to the Bently Nevada scale factor standard. This eliminates field recalibration labor, avoids the risk of misconfigured Proximitor gain settings, and preserves the integrity of your API 670 machinery protection documentation. For facilities operating under insurance or regulatory audit requirements, the traceability value of an OEM-documented unit is not abstract — it directly reduces compliance overhead.
Failure and downtime cost: Eddy-current probes in continuous service on steam turbines or compressors are subject to thermal cycling, vibration fatigue, and chemical exposure. A probe failure that goes undetected — or triggers a false trip — carries costs that dwarf the component price. Our 12-month warranty covers manufacturing defects from the date of shipment, and our pre-shipment inspection protocol (visual, dimensional, and electrical continuity verification) reduces the probability of infant-mortality failures reaching your facility. For high-criticality installations, we recommend holding one spare unit on-site; we can structure a consignment or blanket-order arrangement to support that without tying up capital unnecessarily.
Across a 3-year operational horizon, the differential between a properly sourced OEM unit and a mismatched or uncertified substitute — when integration labor, recalibration, and one avoided unplanned outage are factored in — consistently favors the verified OEM path. siemensplc.com exists to make that path accessible at competitive pricing, without the lead-time penalties of going direct to the OEM.
Quality & Compliance Assurance
Every unit of the 21000-28-05-00-040-04-02 shipped from siemensplc.com passes through a documented inspection and verification process before it leaves our facility:
- 100% Genuine Product Commitment: We source exclusively from authorized distributors and verified surplus channels with full chain-of-custody documentation. No grey-market or unverified units are accepted into our inventory.
- Anti-Counterfeit Verification: Serial numbers are cross-referenced against OEM records. Holographic labels and packaging integrity are inspected on receipt.
- Xiamen Customs Compliance: All export shipments are declared through Xiamen Customs with accurate HS code classification, commercial invoices, and packing lists. We provide full export documentation sets including Certificate of Origin on request, supporting your import compliance requirements in any destination market.
- Multi-Currency Payment Support: We accept USD, EUR, HKD, CNY, and other major currencies. Wire transfer, PayPal, and trade finance arrangements are available for qualified buyers.
- Documentation Package: OEM datasheet, inspection report, packing list, and warranty certificate ship with every order. ATEX/IECEx certificates and ECCN classification letters available on request.
Strategic Sourcing from Xiamen
Xiamen is one of China’s five Special Economic Zones and a designated international logistics hub with direct sea freight connections to major ports across Southeast Asia, the Middle East, Europe, and the Americas. For industrial buyers sourcing automation and instrumentation components, this geography matters operationally:
- Air Freight: Xiamen Gaoqi International Airport offers direct cargo routes to Singapore, Dubai, Frankfurt, Los Angeles, and Tokyo, supporting 3–5 day door-to-door delivery for urgent orders.
- Sea Freight: Xiamen Port ranks among China’s top container ports by throughput, with weekly sailings to Rotterdam, Houston, and Sydney. Cost-effective for multi-unit or project-quantity orders.
- Bonded Warehouse Access: Our Xiamen facility operates with access to bonded logistics zones, enabling faster customs clearance and reduced dwell time for time-sensitive shipments.
- Regional Consolidation: For buyers sourcing multiple part numbers across brands — Bently Nevada, Siemens, ABB, Emerson — we offer consolidated shipment from a single origin point, reducing freight cost and customs complexity.
- Export Track Record: We have shipped industrial automation components to over 40 countries. Our logistics team is experienced in handling dual-use export classifications, dangerous goods documentation, and destination-country import requirements.
Contact Information
To request a quote, confirm availability, or discuss project-quantity pricing for the Bently Nevada 21000-28-05-00-040-04-02, reach our procurement team through any of the following channels:
- Email: [email protected]
- WhatsApp: +86 18359268345
- Web: siemensplc.com
© 2026 siemensplc.com. All rights reserved. All trademarks and brand names referenced herein are the property of their respective owners. siemensplc.com is an independent distributor and is not affiliated with Bently Nevada or Baker Hughes.
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Confirmation Process
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