Product Overview
When your rotating machinery demands reliable vibration monitoring, the Bently Nevada 21000-28-10-00-065-03-02 Proximity Probe Housing Assembly delivers the robust protection you need. Designed as part of the 21000 series, this housing assembly securely encloses a 3300 XL 8 mm probe, ensuring accurate measurement in demanding industrial environments. The model 21000-28-10-00-065-03-02 is built with an aluminum body and a 304 stainless steel sleeve, providing durability and corrosion resistance. This assembly is certified as a CSA Type 4 enclosure and is fully compliant with the American Petroleum Institute's (API) 670 Standard for externally mounted proximity probe housings, making it a trusted choice for critical applications.
Technical Specifications
-
Probe with Connector: 3300 XL 8 mm probe, selectable hazardous area approvals
-
Probe Cable Length: 1.0 m (39 in)
-
Standoff Adapter Length: None (Option C = 00)
-
Probe Penetration (Option D): 6.5 in (065)
-
Fittings Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets for cable sizes 1/8 to 3/16 in, 1/4 to 5/16 in, and 5/16 to 3/8 in
-
Mounting Thread: 3/4-14 NPT (Option F = -02)
-
Material: Aluminum body with 304 stainless steel sleeve
-
Weight: 1.1 kg (2.4 lb) typical, without fittings
For the 1.0 m probe cable length, the maximum (C) + (D) dimension with visible probe (P/N and S/N) is 17.0 in (43.18 cm), and the absolute maximum (C) + (D) dimension is 32.9 in (83.5 cm). The probe penetration adjustment range is 13 mm (± 0.5 in).
Key Features & Benefits
-
Explosion-Proof Rating: Certified by CSA as explosion proof for hazardous areas, ensuring safe operation in explosive atmospheres.
-
Intrinsically Safe Compatibility: Works with hazardous area approved proximity probes for intrinsically safe applications.
-
API 670 Compliance: Fully compliant with API 670 for externally mounted proximity probe housings, meeting industry standards.
-
Versatile Fittings: Includes multiple NPT fittings and cable seal grips to accommodate various conduit and cable sizes.
-
Durable Construction: Aluminum body with 304 stainless steel sleeve offers long-lasting performance in harsh environments.
Industry Applications
The Bently Nevada 21000-28-10-00-065-03-02 is ideal for vibration monitoring in rotating machinery such as turbines, compressors, pumps, and motors. In oil and gas refineries, the explosion-proof design ensures safe operation in hazardous areas. In power generation plants, the housing assembly provides reliable shaft vibration and position measurements, helping to prevent unplanned downtime. The API 670 compliance makes it suitable for critical machinery protection systems across various process industries.
Installation & Setup Guidance
When installing the 21000-28-10-00-065-03-02, ensure the mounting thread (3/4-14 NPT) is properly engaged to provide a secure seal. If the probe penetration length (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. For penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be necessary to reduce side view or rear view effects. Adjust the probe penetration within the 13 mm (± 0.5 in) range to achieve optimal gap settings. Use the provided fittings and cable seal grips to maintain the enclosure rating.
Maintenance & Reliability
Regular inspection of the housing assembly is recommended to ensure the O-rings remain intact and the dome cover is tight. Check the cable seal grips periodically for wear and ensure the grommets are in good condition to maintain a watertight seal. The stainless steel sleeve resists corrosion, but in highly corrosive environments, periodic cleaning is advised. By maintaining the assembly properly, you extend its service life and reduce the risk of unexpected failures, contributing to lower total cost of ownership.
Selection Guide & Purchasing Advice
Before ordering, verify the probe cable length, fittings option, and mounting thread configuration to match your application. The 21000-28-10-00-065-03-02 comes with a 12-month factory warranty and is supplied in new, original factory packing. For competitive pricing and reliable delivery, consider PLC Source PRO as your sourcing partner for this genuine Bently Nevada housing assembly.