Bently Nevada Housing Assembly 21000-28-05-00-096-03-02

Bently Nevada 21000-28-05-00-096-03-02 Proximity Probe Housing Assembly

The assembly functions as a heavy-duty, environmental shielding enclosure designed to house and protect a reverse-mount proximity probe in harsh industrial process conditions. By utilizing a ruggedized, explosion-proof layout, this mechanical module enables precise shaft vibration and axial position measurements on turbines, compressors, and large rotating machinery while sealing internal electrical links from ambient moisture and hazardous gas leakage.

Technical Specifications

Quick Installation Guide

• Mount the main aluminum housing block directly into the machine frame casing utilizing the designated 3/4-14 NPT connection threads (Standoff adapter is bypassed in this setup).
• Verify that the internal 304 stainless steel probe sleeve extends precisely 9.6 inches into the housing port to establish correct geometric alignment over the rotating shaft target.
• Carefully thread the reverse-mount 3300 XL 8mm probe through the extension tube, routing its 0.5-meter trailing coaxial wire smoothly into the dome junction area.
• Select the correct rubber wire grommet size (ranging from 1/8 to 3/8 inches) inside the 03 option cable seal grip to form a tight compression seal around your instrument wiring, apply the thread seal, and torque the dome cover down onto the 1.1 kg aluminum base unit.

Technical FAQs

Q1: What structural components are integrated inside the 21000 series assembly to shield field equipment?
A1: The complete 1.1 kg setup consists of a specialized dome cover that threads directly into the aluminum body shell, integrated ports for conduit wiring networks, an elongated 9.6-inch probe tracking sleeve, robust sealing O-rings, a reverse-mount proximity transducer probe, and active thread seals. This design maintains atmospheric integrity around the sensor core under extreme pressures.

Q2: Why is the part and serial number labeled as "Not Visible" under the dimensional configurations?
A2: Due to the deep 9.6-inch penetration depth and the specific physical orientation of a reverse-mount sensor structure, the internal probe's identification markings reside entirely inside the protective 304 stainless steel sleeve once assembled. These details cannot be visually verified without removing the main 1.1 kg aluminum housing shell from the machine port.

Q3: Which hazardous area and industrial certifications cover this proximity housing assembly?
A3: This explosion-proof system carries explicit global credentials, featuring CSA certification for Class I (Div 1 & 2, Groups C & D), Class II (Div 1 & 2, Groups E, F & G), and Class III locations. It is fully compliant with RoHS Directive 2011/65/EU and meets the technical design criteria set by the API 670 standard for externally mounted proximity probe enclosures.