Cost-Effective Vibration Monitoring with Robust Protection
Industrial rotating machinery demands reliable vibration monitoring to prevent unplanned downtime and costly repairs. The Bently Nevada 21000-34-00-20-065-03-02 proximity probe housing assembly provides a rugged, explosion-proof enclosure for the 3300 XL 8 mm probe, ensuring accurate shaft displacement measurements in hazardous areas. By combining a certified housing with precise probe positioning, this assembly reduces installation errors and extends sensor life, delivering measurable operational ROI.
Technical Specifications Breakdown
Key parameters for the 21000-34-00-20-065-03-02 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Model | 21000 Proximity Probe Housing Assemblies |
| Probe Option | 34 = 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals |
| Probe Cable Length | 00 = Probe cable not required |
| Standoff Adapter | 20 = 2 in |
| Probe Penetration | 065 = 6.5 in |
| Mounting Thread Option | -02 = 3/4-14 NPT |
| Material | 21000 Aluminum body with 304 stainless steel sleeve |
| Probe Cable Length | 1.0 m |
| Maximum (C) + (D) with visible probe (P/N and S/N) | 17.0 in (43.18 cm) |
| Maximum (C) + (D) Dimension | 32.9 in (83.5 cm) |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
Industry Applications and Cost Impact
The 2-inch standoff adapter and 6.5-inch probe penetration allow optimal gap setting for accurate proximity measurements, reducing false alarms and maintenance costs. The CSA Type 4 and API 670 compliance ensures reliable operation in harsh environments, minimizing replacement frequency and total cost of ownership.
Installation and Setup Guidance
Mount the housing using the 3/4-14 NPT thread option. Ensure the standoff adapter length (2 in) matches the required clearance for the target shaft. The kit includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches. Verify that the probe cable length (1.0 m) is sufficient for the conduit run. Follow API 670 guidelines for external mounting to avoid mechanical interference.
Maintenance and Reliability
Periodically inspect the housing for corrosion or damage, especially in corrosive atmospheres. The aluminum body with 304 stainless steel sleeve provides durability, but routine checks of O-rings and seal integrity ensure continued explosion-proof performance. No disassembly of the probe is required for visual inspection. Replacing worn grommets during cable changes maintains the environmental seal and extends service life.
Compatibility and Integration
The assembly is designed for use with the 3300 XL 8 mm proximity probe and is fully compatible with Bently Nevada monitoring systems. The selectable hazardous area approvals allow integration into intrinsically safe circuits. Ensure the probe connector protector is correctly oriented to avoid cable strain. The assembly meets CSA Type 4 enclosure requirements, simplifying compliance with site safety standards.
Selection Guide and Purchasing Advice
When ordering the 21000-34-00-20-065-03-02, verify that the mounting thread option (-02) matches your conduit fitting. AutoDCSTech stocks this assembly as new and original in factory packaging with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering. For assistance with custom configurations or alternative probe options, contact our engineering team.
Availability & Condition at AutoDCSTech
| Part Number | 21000-34-00-20-065-03-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
