21000-16-05-00-094-03-02 Bently Nevada 3300 XL Housing

Product Overview

The Bently Nevada 21000-16-05-00-094-03-02 is a specialized proximity probe housing assembly designed to facilitate the external mounting of proximity sensors on large industrial machinery. This rugged enclosure allows technicians to install or replace probes without disassembling the machine casing. We supply this assembly as 100% Brand New original hardware, featuring an aluminum body and a 304 stainless steel sleeve. It houses a high-precision 3300 XL 8 mm probe, providing critical vibration and position data for turbines, compressors, and pumps while protecting the sensor from harsh external environments.

Part Number Breakdown

• 21000: Proximity Probe Housing Assembly Model.

• -16: Probe Option (Includes 3300 XL 8 mm probe with connector).

• -05: Probe Cable Length (0.5 meter / 20 inches).

• -00: Standoff Adapter (No standoff adapter included).

• -094: Probe Penetration (9.4 inches / 238.8 mm).

• -03: Fitting Option (3/4-14 NPT plug, reducer, and multi-size cable seal grip).

• -02: Mounting Thread (3/4-14 NPT).

Technical Specifications

Engineering Advantages

• External Accessibility: The 21000 series housing allows for "through-the-case" probe installation. This enables maintenance teams to adjust or replace the internal proximity probe from the outside of the machine, significantly reducing downtime during outages.

• Explosion-Proof Integrity: When properly installed with the included 3/4-14 NPT fittings and cable seals, this housing assembly supports hazardous area requirements. It isolates the internal machine atmosphere from the external environment, protecting against gas leaks and pressure differentials.

• Corrosion-Resistant Hybrid Construction: The assembly combines a lightweight aluminum body with a heavy-duty 304 stainless steel sleeve. This ensures the portion of the housing exposed to internal machine oil and heat remains chemically inert and structurally sound over decades of service.

• Versatile Cable Management: The "-03" fitting option includes a cable seal grip with multiple grommets. This accommodates various field cable diameters (1/8 to 3/8 inches), ensuring a liquid-tight seal regardless of the specific interconnect cable used at the site.

• Optimized Probe Protection: The housing acts as a mechanical shield for the 3300 XL 8 mm probe, preventing damage from flying debris or physical impacts within the plant. It ensures the probe remains perfectly aligned with the target shaft for consistent 200 mV/mil sensitivity.

FAQs

• How do I adjust the probe gap within this housing?

  The 21000 assembly allows you to thread the probe in or out through the sleeve. Use a voltmeter to monitor the Proximitor® output and lock the probe in place once you achieve the desired DC gap voltage (typically -10V).

• Is the 9.4-inch penetration depth adjustable?

  The "094" suffix represents a fixed penetration depth for this specific model. If your machine casing thickness varies, you must ensure the 9.4-inch reach correctly positions the probe tip within the linear range of the shaft.

• Does this unit come with a Certificate of Origin (COO)?

  Yes. Upon request, we can provide a formal COO to verify that the unit is a genuine Bently Nevada product made in the U.S.A.

• What is the significance of the "No Standoff Adapter" (-00) option?

  The -00 option means the housing mounts directly to the machine surface using the 3/4-14 NPT thread. This is ideal for standard casing thicknesses where the 9.4-inch penetration provides sufficient reach without needing an external spacer.