Bently Nevada Probe Housing 31000-00-00-00-082-03-02

Bently Nevada 31000 Proximity Probe Housing – Model 31000-00-00-00-082-03-02

Product Introduction

The Bently Nevada 31000-00-00-00-082-03-02 is a dedicated proximity probe housing assembly designed for reliable machine vibration monitoring. This housing accommodates a 3300 XL 8 mm probe and provides essential mechanical protection in demanding settings such as turbines, compressors, and pumps. Manufactured in the U.S.A., this model includes a 8.2-inch probe penetration and comes with a complete set of fittings for flexible cable management. Its robust thermoplastic construction, reinforced with conductive fibers, ensures both structural integrity and electrostatic dissipation in hazardous locations.

Technical Specifications

The 31000 Proximity Probe Housing delivers consistent performance through carefully engineered components. This model, 31000-00-00-00-082-03-02, specifies no probe or probe cable included, making it ideal for users who already possess compatible sensors.

Key electrical and mechanical parameters include:

• Probe Penetration: 082 = 8.2 inches (208 mm)

• Mounting Thread: 02 = 3/4-14 NPT

• Fittings Supplied: Two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, plus a cable seal grip with three interchangeable grommets for cable diameters of 1/8–3/16 in, 1/4–5/16 in, and 5/16–3/8 in.

Furthermore, the housing is designed to seal differential pressure between the probe tip and the main body. A Viton O-ring provides internal sealing, while a Neoprene O-ring seals the interface between the sleeve and housing. Although it is not pressure-rated for internal or external pressure, it has been certified to resist hose-directed water ingress per NEMA 4X and IP66 standards.

Materials and Mechanical Strength

Durability is a hallmark of the Bently Nevada 31000 series. The housing body uses glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic with conductive fibers, which offers excellent chemical resistance and dimensional stability.

Specifically, the material composition includes:

• Housing: Glass-reinforced PPS with conductive fibers

• Sleeve & Retaining Chain: AISI 304 stainless steel

• Outer Sleeve & Exterior Screws: AISI 303 stainless steel

• O-Ring Material: Neoprene®

Additionally, mechanical strength has been rigorously validated. The outer sleeve supports up to 912 N (205 lb) when mounted horizontally. Impact testing shows that the housing withstands two separate 4 Joule impacts at extreme temperatures of -39°C and 115°C, as certified by BASEEFA. CSA further verified that samples survive a 7 Joule impact at room temperature. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb) to ensure a secure installation.

Environmental Ratings and Operating Conditions

The 31000-00-00-00-082-03-02 excels in harsh environments. Its protection ratings are verified by multiple independent bodies:

• Type 4X (CSA certified) for corrosion resistance and water ingress protection

• IP66 (verified per SC115582-1 (e) 106) for dust-tight and powerful water jet resistance

• CENELEC EN50014 rating for electrostatic dissipation in hazardous areas

Moreover, the operating temperature range spans from -51°C to +105°C (-60°F to +221°F), making this housing suitable for both outdoor installations and high-temperature industrial processes. Its lightweight design, weighing just 1.2 kg (2.6 lb), simplifies handling and mounting without compromising ruggedness.

Installation Guidelines

Proper installation of the Bently Nevada 31000 housing ensures optimal probe performance and system reliability. Follow these steps for a successful setup:

1. Prepare the mounting surface – Ensure the 3/4-14 NPT threaded hole is clean and free of debris.

2. Install the probe – Insert your 3300 XL 8 mm probe through the housing, adjusting the 8.2-inch penetration as required.

3. Select the correct grommet – Choose the appropriate cable seal grommet that matches your probe cable diameter (options cover 1/8″ to 3/8″).

4. Tighten the retaining nut – Apply the recommended torque of 29.4 N·m (260 in·lb) to secure the assembly.

5. Connect fittings – Install the provided NPT plugs and reducer as needed for your piping configuration.

6. Verify sealing – Although not pressure-tested at shipment, visually inspect all O-rings and seals before commissioning.

For applications requiring pressure seal verification, please contact our custom design department for testing services.

Packaging List

Your shipment of the 31000-00-00-00-082-03-02 includes the following items:

• 1 x 31000 Proximity Probe Housing main body

• 1 x Outer sleeve (AISI 304 stainless steel)

• 1 x Retaining chain

• 1 x Cable seal grip with three grommet sizes (1/8–3/16″, 1/4–5/16″, 5/16–3/8″)

• 2 x NPT plugs

• 1 x 3/4-14 to 1/2-14 NPT SST reducer

• 1 x Installation instruction sheet

Note: Probe, probe cable, and standoff adapter are not included.

Frequently Asked Questions (FAQ)

1. Is the Bently Nevada 31000-00-00-00-082-03-02 compatible with other probe models?
This housing is specifically designed for the 3300 XL 8 mm probe. While other 8 mm proximity probes may physically fit, we recommend using the designated Bently Nevada probe to ensure proper sealing and performance.

2. Can this housing be used in outdoor or wet environments?
Yes. The 31000 Proximity Probe Housing carries both NEMA 4X and IP66 ratings, which certify protection against corrosion, dust, and high-pressure water jets from any direction.

3. What is the purpose of the 8.2-inch penetration option?
The 082 penetration option sets the probe tip insertion depth to 8.2 inches. This configuration optimizes the gap voltage and linear range for common machine casing thicknesses.

4. How do I select the correct cable grommet?
Measure your probe cable outer diameter. The housing includes three grommets covering 1/8–3/16 in, 1/4–5/16 in, and 5/16–3/8 in. Choose the one that provides a snug fit to maintain the IP66 seal.

5. Does the housing require special maintenance?
Routine visual inspection of the O-rings and cable seal is recommended during scheduled machine shutdowns. Replace any damaged seals promptly. No lubrication or recalibration is needed for the housing itself.