Bently Nevada 21000-34-05-30-050-03-02 Proximity Probe Housing Assembly

Technical Specifications Breakdown

Key parameters for the 21000-34-05-30-050-03-02 are listed below for quick reference:

Industry Applications

Refinery and Petrochemical Plants

In explosive atmospheres, the housing's CSA explosion-proof rating (when ordered with appropriate options) provides intrinsic safety for 3300 XL probes. The 3/4-14 NPT mounting thread and included conduit fittings simplify installation in existing junction boxes.

Power Generation Turbines

For steam and gas turbines, the 5.0 in probe penetration and 3.0 in standoff adapter allow precise positioning relative to shaft targets. The 304 stainless steel sleeve resists corrosion in high-humidity environments.

Compressor Monitoring

In reciprocating and centrifugal compressors, the 0.5 m probe cable length reduces signal noise. The aluminum body with stainless steel sleeve withstands vibration without degrading measurement accuracy.

Installation and Setup Guidance

Mounting Preparation

Before installation, verify the mounting thread is 3/4-14 NPT. The assembly 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 1/8 to 3/16, 1/4 to 5/16, and 5/16 to 3/8 inches. Select the appropriate grommet for your cable diameter.

Probe Positioning

Adjust the standoff adapter to achieve the correct gap between the probe tip and the target surface. The 3.0 in standoff adapter provides a fixed reference; ensure the probe penetration of 5.0 in aligns with the shaft's radial position.

Conduit Connections

Use the provided fittings to create a sealed conduit run. For hazardous area installations, confirm the housing is ordered with the correct explosion-proof options (E:00, E:01, E:02, or E:04) to maintain CSA certification.

Maintenance and Reliability

Periodic Inspection

Inspect the dome cover and O-rings annually for signs of wear or corrosion. Replace any damaged seals to maintain the CSA Type 4 enclosure rating.

Environmental Considerations

The aluminum body with 304 stainless steel sleeve is suitable for indoor and outdoor use. Avoid exposure to strong acids or alkalis that may attack aluminum. The assembly is fully compliant with API 670 Standard for externally mounted proximity probe housings.

Robust Protection for Critical Vibration Monitoring

In rotating machinery, reliable vibration measurement depends on secure probe installation. The Bently Nevada 21000-34-05-30-050-03-02 Proximity Probe Housing Assembly addresses this need by providing a rugged, explosion-proof enclosure for the 3300 XL 8 mm probe. This assembly ensures consistent, accurate data collection in harsh industrial environments, reducing unplanned downtime and maintenance costs.

Selection Guide and Purchasing Advice

When ordering the 21000-34-05-30-050-03-02, verify the suffix codes match your application: probe option 34 for 3300 XL 8 mm probe with connector protector, cable length 05 for 0.5 m, standoff adapter 30 for 3.0 in, penetration 050 for 5.0 in, and mounting thread -02 for 3/4-14 NPT. AutoDCSTech stocks this assembly new and original in factory packing, backed by a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.