Technical Specifications Breakdown
Key parameters for the 21000-34-00-20-018-04-02 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 = 2.0 in |
| Probe Penetration | 018 = 2.8 in |
| Fitting Option | 04 = One 3/4-14 NPT plug only |
| Mounting Thread Option | -02 = 3/4-14 NPT |
| Material | Aluminum body with 304 stainless steel sleeve |
| Weight | 1.1 kg (2.4 lb) typical, without fittings |
Practical Installation Guidance
From a maintenance perspective, the 21000-34-00-20-018-04-02 simplifies field installation. The 2.0-inch standoff adapter and 2.8-inch probe penetration provide flexibility for mounting on standard machinery casings. The 3/4-14 NPT mounting thread and included plug allow for straightforward conduit connections. Ensure the housing is properly grounded and that all O-rings are seated correctly to maintain the environmental seal.
Reliability and Maintenance Tips
Regular inspection of the housing assembly is recommended to verify seal integrity and mechanical condition. Check the dome cover and threaded ports for signs of corrosion or damage, especially in corrosive atmospheres. The aluminum body with stainless steel sleeve offers good resistance to typical industrial environments. No internal adjustments are needed, reducing maintenance downtime.
Robust Protection for Critical Vibration Monitoring
For maintenance engineers working with rotating machinery, the Bently Nevada 21000-34-00-20-018-04-02 proximity probe housing assembly offers a reliable solution for protecting sensitive vibration probes in harsh industrial environments. This assembly combines a durable aluminum body with a 304 stainless steel sleeve, ensuring long-term performance in demanding applications.

Designed for Hazardous Area Compliance
This housing assembly is certified as a CSA Type 4 enclosure and rated explosion-proof for hazardous areas when ordered with appropriate options. It fully complies with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. The 21000-34-00-20-018-04-02 is suitable for intrinsically safe applications when paired with hazardous area approved proximity probes.

Compatibility and Integration
This assembly is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. The connector protector ensures reliable signal transmission in harsh conditions.
Selection Guidance
When ordering the 21000-34-00-20-018-04-02, verify that the probe cable length and mounting thread options match your application requirements. AutoDCSTech stocks this assembly as new and original in factory packaging, backed by a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 21000-34-00-20-018-04-02 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
