Introduction: Bently Nevada 21000-28-10-00-030-04-02
The Bently Nevada 21000-28-10-00-030-04-02 is a precision-engineered proximity probe housing assembly designed for reliable vibration and position monitoring in critical rotating machinery. This industrial automation module is part of the trusted 21000 series, built to meet stringent API 670 standards and CSA Type 4 enclosure requirements for hazardous area applications. With a rugged aluminum body and 304 stainless steel sleeve, it ensures long-term durability in demanding environments.
This specific configuration includes a 3300 XL 8 mm probe with selectable hazardous area approvals, a 1.0 m (39 in) probe cable, and a 3/4-14 NPT mounting thread. The 21000-28-10-00-030-04-02 is supplied new in original factory packing with a 12-month warranty, making it a dependable choice for maintenance and upgrade projects.
Technical Specifications
| Parameter |
Specification |
| Model |
21000-28-10-00-030-04-02 |
| Probe Type |
3300 XL 8 mm probe, selectable hazardous area approvals |
| Probe Cable Length |
1.0 m (39 in) |
| Standoff Adapter Length |
None (00) |
| Probe Penetration (Option D) |
3 in (030) |
| Fittings |
One 3/4-14 NPT plug |
| Mounting Thread |
3/4-14 NPT |
| Material |
Aluminum body with 304 stainless steel sleeve |
| Weight |
1.1 kg (2.4 lb) typical, without fittings |
These specifications are directly from the manufacturer's data and ensure accurate integration with your monitoring system.
Key Features and Benefits
-
Explosion-proof rated for hazardous areas, certified to CSA standards.
-
CSA Type 4 enclosure – provides protection against water and dust ingress.
-
API 670 compliant – meets industry standard for externally mounted proximity probe housings.
-
Robust construction – aluminum body with stainless steel sleeve resists corrosion and mechanical stress.
-
Adjustable probe penetration – option D allows fine-tuning within a 13 mm (±0.5 in) range.
Industry Applications
The 21000-28-10-00-030-04-02 is widely used in turbomachinery, pumps, compressors, and other rotating equipment where continuous vibration and shaft position monitoring are critical. In petrochemical plants, the explosion-proof design ensures safe operation in classified areas. In power generation, it supports predictive maintenance programs, reducing unplanned downtime. This housing assembly is also ideal for retrofitting older systems with modern, reliable probes.
Installation and Mounting Guidance
Proper installation is essential for accurate measurements. When mounting the 21000-28-10-00-030-04-02, ensure the probe penetration depth (C plus D) does not exceed 300 mm (12 in) without adding 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 minimize side view effects. The adjustment range for option D is 13 mm (±0.5 in), allowing precise positioning. Always torque the 3/4-14 NPT mounting thread to the recommended value and verify the probe cable is routed without sharp bends.
Maintenance and Reliability
Routine inspection of the housing assembly ensures long-term reliability. Check the O-rings and thread seal for wear during every maintenance cycle. Verify that conduit fittings remain tight to maintain the explosion-proof integrity. The stainless steel sleeve resists corrosion, but periodic cleaning of the probe tip is recommended to prevent debris buildup. With proper care, the 21000-28-10-00-030-04-02 delivers consistent performance, minimizing the total cost of ownership.
Selection Guide and Purchasing Advice
When ordering this part, verify the suffix codes match your requirements: probe type (28), cable length (10), standoff adapter (00), penetration (030), fittings (04), and mounting thread (02). Confirm that your system is compatible with a 3/4-14 NPT mounting. For hazardous areas, ensure the selected probe approvals meet your site's classification. PLC Source PRO offers this Bently Nevada 21000-28-10-00-030-04-02 with factory warranty and original packaging, ensuring authenticity and peace of mind.