Bently Nevada 31000-16-10-00-085-03-02 Proximity Probe Housing

Overview

The 31000-16-10-00-085-03-02 is a ruggedized explosion-proof proximity probe housing from Bently Nevada’s 31000 series. Constructed from corrosion-resistant aluminum, this housing is designed to protect 5mm and 8mm proximity probes (such as the 3300 XL series) in hazardous industrial environments. The 31000 series is the standard for applications requiring ATEX or CSA certifications, allowing for the external adjustment of the probe gap without exposing internal machine components to the atmosphere.

Detailed Specifications (Parsed Code)

The configuration for part number 31000-16-10-00-085-03-02 is as follows:

Operational Capabilities

The 31000-16-10-00-085-03-02 features a specialized dome and sleeve assembly that provides an IP66/NEMA 4X seal. The 8.5-inch total length provides sufficient reach for most bearing housing thicknesses, while the dual 3/4-14 NPT fittings (-03) allow for versatile conduit routing—ideal for “daisy-chaining” sensors or separating signal and power lines. The explosion-proof rating (-02) makes it mandatory for use in refinery, chemical processing, and offshore environments where combustible gases may be present.

Technical FAQ

What is the difference between the 21000 and 31000 series?

While both are aluminum housings, the 31000 series is specifically designed with updated North American and International (ATEX/IECEx) hazardous area certifications. The 31000 is often the direct functional replacement for older 21000 series installations in safety-critical zones.

Can I adjust the probe depth while the machine is running?

Yes. The primary benefit of the 31000-16-10-00-085-03-02 is the ability to loosen the external locknut and adjust the internal sleeve to set the proper voltage gap (typically -9.0 VDC) without stopping the turbine or compressor.