Bently Nevada 21000-34-10-00-085-04-02 Proximity Probe Housing Assembly

Technical Specifications Breakdown

Key parameters for the 21000-34-10-00-085-04-02 are listed below for quick reference:

Application Versatility in Rotating Machinery

The 8.5-inch probe penetration allows installation through thicker machine casings, while the 1.0 m cable provides flexibility for routing to junction boxes. The 3/4-14 NPT fitting simplifies conduit connections, ensuring a secure and sealed installation.

Installation and Setup Guidance

When installing the 21000-34-10-00-085-04-02, ensure the mounting surface is clean and flat to maintain proper sealing. The 3/4-14 NPT thread requires appropriate thread sealant to prevent leaks in hazardous areas. The probe cable should be routed away from high-voltage lines to avoid electromagnetic interference. After installation, verify the probe gap using an oscilloscope or proximity probe calibrator to ensure the transducer is within its linear range.

Maintenance and Reliability

Periodic inspection of the housing assembly is recommended to check for signs of corrosion, loose fittings, or damage to the probe cable. The O-rings should be replaced if any leakage is observed. In environments with high vibration, verify that the mounting threads remain tight. The 304 stainless steel sleeve provides long-term durability, but the aluminum body should be inspected for pitting in corrosive atmospheres.

Robust Protection for Critical Vibration Monitoring

When monitoring rotating machinery in harsh industrial environments, the housing assembly is as critical as the probe itself. The Bently Nevada 21000-34-10-00-085-04-02 proximity probe housing assembly provides a rugged, explosion-proof enclosure designed to protect the 3300 XL 8 mm probe while ensuring reliable, accurate measurements. This assembly is engineered to meet API 670 standards, making it a trusted choice for compressor, turbine, and pump protection systems.

Engineered for Hazardous Environments

The 21000 housing is rated explosion-proof by CSA when ordered with appropriate options, and both the 21000 aluminum and 24701 stainless steel housings are certified as CSA Type 4 enclosures. This makes the assembly suitable for use in classified areas where flammable gases or vapors may be present. The aluminum body with 304 stainless steel sleeve offers corrosion resistance while maintaining a lightweight profile.

Compatibility and Integration

This assembly is designed for use with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitors such as the 3500 series. The CSA Type 4 rating ensures compatibility with standard hazardous area installation practices. The assembly fully complies with API 670 standards for externally mounted proximity probe housings, ensuring seamless integration into existing protection systems.

Selection Guide and Purchasing Advice

When selecting a housing assembly, consider the probe penetration length (8.5 in for this model) and the mounting thread (3/4-14 NPT). For applications requiring a standoff adapter, this model includes no standoff adapter. Ensure the fitting option (one 3/4-14 NPT plug) meets your conduit requirements. AutoDCSTech offers this unit as new and original in factory packing with a 12-month warranty. Please verify current lifecycle status and availability with AutoDCSTech before ordering.