21000-28-05-00-052-03-02 Bently Nevada Proximity Probe Housing Assembly

Product OverviewThe 21000-28-05-00-052-03-02 is a premier industrial-grade protection solution for proximity sensors. As a core component of the Bently Nevada 21000 Series, this assembly provides an explosion-proof environment for sensitive transducers. It is meticulously engineered to meet the API 670 Standard, ensuring consistent performance in high-stakes machinery monitoring. The combination of an aluminum body and 304 Stainless Steel sleeve delivers superior durability against mechanical stress and environmental factors.Configuration Breakdown21000 — Proximity Probe Housing Assembly └── 28: Probe Option └── 3300 XL 8 mm probe (Integrated connector / Hazardous area rated) └── 05: Probe Cable Length └── 0.5 meter (20 inches) internal lead └── 00: Standoff Adapter └── No standoff adapter configured └── 052: Probe Penetration └── 5.2 inches effective sleeve depth └── 03: Fitting Option └── Includes 3/4-14 NPT plug, reducer, and multi-size cable seals └── 02: Mounting Thread └── 3/4-14 NPT standard mounting interfaceTechnical Data & PerformanceManufacturer: Bently NevadaHousing Material: High-grade Aluminum with 304 SS SleeveHazardous Certification: Explosion-proof (CSA Class I Div 1 & 2)Enclosure Rating: Type 4 / IP66 EquivalentStandard Compliance: Fully compliant with API 670 for external housingsWeight: Approximately 1.1 kg (2.4 lb)Diagnostic Capability: Supports online probe gap adjustment via removable domeOiltech Controls Limited’s InsightOur technical team identifies the 21000-28-05-00-052-03-02 as a critical asset for “Live-Maintenance” strategies. Because the 21000 Series is externally mounted, engineers can replace or calibrate probes without a full machinery shutdown. The specific 5.2-inch penetration depth is optimized for medium-to-large bearing housings. We recommend verifying the Total Electrical Length (TEL) of your system when pairing this 0.5m probe with extension cables to maintain calibration accuracy.Typical ApplicationsSteam Turbines: Monitoring axial thrust and radial vibration in power plants.Centrifugal Compressors: Protecting probes in high-speed oil and gas applications.Critical Gearboxes: Shaft position monitoring in industrial drive trains.Harsh Environments: Ideal for Hazardous Zones requiring CSA-certified explosion-proof protection.Shipping & WarrantyCondition: 100% New & Original in Factory Packing.Warranty: Full 12-Month Quality Guarantee.Express Logistics: Global door-to-door delivery via FedEx, UPS, or DHL.Expert FAQ & Procurement GuideQ: How do I select the correct penetration length for the 21000-28-05-00-052-03-02? A: Measure from the outer mounting surface of the machine to the target shaft. The 5.2″ sleeve must allow the probe tip to reach the gap range without mechanical interference.Q: Can the 21000 series be used in offshore saltwater environments? A: While the 21000 aluminum body is durable, for high-salinity offshore use, we suggest the 24701 stainless steel series. This aluminum model is best for standard refinery and power plant onshore sites.Q: Does this model include the proximity probe itself? A: Yes. The 21000-28-05-00-052-03-02 includes a 3300 XL 8mm reverse-mount probe. It is a complete mechanical and electrical assembly.Q: What is the benefit of the “00” Standoff Adapter option? A: Choosing “00” (no standoff) minimizes the profile of the housing. This is preferred when space around the bearing pedestal is limited and the sleeve length matches the casing thickness perfectly.Q: Is the dome cover replaceable if lost? A: Yes, the dome cover is a standard threaded part. However, maintaining the O-ring seal is vital to preserve the Type 4 enclosure rating and explosion-proof integrity.Contact Information Inquiries: [email protected], 86 158 8020 0923Copyright © 2026 Oiltech Controls Limited. All rights reserved. Original Source: https://www.oiltechcontrols.com/ All rights reserved.