31000-28-05-35-032-03-02 Bently Nevada 3300 XL Housing

31000-28-05-35-032-03-02 Bently Nevada 3300 XL Probe Housing

Product Introduction

The Bently Nevada 31000-28-05-35-032-03-02 is a fully-featured proximity probe housing assembly engineered for the 3300 XL 8 mm probe system. This housing offers exceptional installation flexibility with a 3.5-inch standoff adapter, a 3.2-inch probe penetration, and a complete set of fittings that includes NPT reducers and multiple cable seal grips.

Manufactured in the U.S.A., this 3300 XL probe housing comes with a 0.5-meter probe cable and carries multiple approvals for use in demanding industrial environments. The standoff adapter allows you to position the probe at an optimal distance from the machine casing, which is particularly useful in applications with limited mounting space or where thermal isolation is required.

Furthermore, this housing incorporates a glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic body with conductive fibers for electrostatic dissipation. The stainless steel components (AISI 304 and 303) provide excellent corrosion resistance, while the dual O-ring sealing system (Viton and Neoprene) ensures reliable environmental protection. Meanwhile, the comprehensive fitting kit simplifies installation by providing everything you need for conduit connections and cable sealing.

Technical Specifications

Housing & Materials

• Housing Material: Glass-reinforced PPS thermoplastic with conductive fibers.

• Sleeve Material: AISI 304 stainless steel.

• Outer Sleeve & Exterior Screws: AISI 303 stainless steel.

• O-Ring Materials: Viton® (internal probe seal) and Neoprene® (sleeve-to-housing seal).

• Retaining Chain Material: AISI 304 stainless steel.

Protection Ratings

• Type 4X certified by CSA (Canadian Standards Association).

• IP66 verified per SC115582-1 (e) 106.

• CENELEC EN50014 rated for electrostatic dissipation in hazardous areas.

• Hose-directed water sealing per NEMA 4X and IP66 standards.

Mechanical Specifications

• Probe Option: 3300 XL 8 mm probe with multiple approvals (Option 28).

• Cable Length: 0.5 meter (20 inches) (Option 05).

• Standoff Adapter: 3.5 inches (Option 35).

• Probe Penetration: 3.2 inches (Option 032).

• Mounting Thread: 3/4-14 NPT (Option 02).

• Recommended Torque (retaining nut): 29.4 N·m (260 in·lb).

Fittings Included (Option 03)

• Two plugs

• One 3/4-14 NPT fitting

• One 3/4-14 to 1/2-14 NPT stainless steel reducer

• One cable seal grip with grommets for:

  • 1/8 to 3/16 inches cable diameter

  • 1/4 to 5/16 inches cable diameter

  • 5/16 to 3/8 inches cable diameter

Temperature & Impact Ratings

• Operating Temperature: –51°C to +105°C (–60°F to +221°F).

• Impact Strength: BASEEFA certified for two separate 4 Joule impacts at –39°C and 115°C; CSA verified for 7 Joule impact at ambient temperature.

• Housing Strength: Supports 912 N (205 lb) placed 38 mm from the unsupported end.

Weight

• Housing Weight: 1.2 kg (2.6 lb) typical.

• Shipping Weight: Approximately 2.0 kg with packaging and fittings.

Installation Guidelines

For successful installation of the Bently Nevada 31000-28-05-35-032-03-02, follow these recommendations:

1. Standoff Adapter Installation: First, install the 3.5-inch standoff adapter (Option 35) into the machine casing. Ensure the 3/4-14 NPT threads are clean and apply an appropriate thread sealant. Tighten the adapter to the recommended torque.

2. Housing Mounting: Attach the housing to the standoff adapter, then insert the 3300 XL 8 mm probe through the assembly until the 3.2-inch penetration is achieved. The standoff provides additional clearance for thermal expansion or insulation.

3. Fitting Selection: Choose the appropriate cable seal grip grommet that matches your field wiring diameter (1/8"–3/8" range). Install the 3/4-14 NPT fitting and reducer as required for your conduit system.

4. Torque Application: Tighten the retaining nut to 29.4 N·m (260 in·lb) using a calibrated torque wrench. Over-tightening may damage the housing or affect probe performance.

5. Cable Sealing: Route the 0.5-meter probe cable through the cable seal grip and tighten the gland to achieve a moisture-tight seal. This preserves the IP66 and Type 4X integrity of the installation.

Packaging List

Each 31000-28-05-35-032-03-02 shipment includes:

• 1 × Bently Nevada 3300 XL Probe Housing Assembly (with 3.5" standoff and 3.2" penetration)

• 1 × 3300 XL 8 mm Probe with 0.5 m cable (multiple approvals)

• 2 × Plugs

• 1 × 3/4-14 NPT fitting

• 1 × 3/4-14 to 1/2-14 NPT stainless steel reducer

• 1 × Cable seal grip with three grommets (1/8–3/16", 1/4–5/16", 5/16–3/8")

• 1 × Retaining chain

• 1 × Installation instruction sheet

Note: Certificates, calibration reports, and warranty documents are not included in the standard packaging but are available upon request.

Shipping Information

We ship all orders via reliable international couriers:

• FedEx

• UPS

• DHL

Please allow 1–3 business days for order processing. Tracking numbers will be provided once your shipment is dispatched.

Frequently Asked Questions

Q1: What does the "multiple approvals" option (Option 28) include?
A: Option 28 indicates that the 3300 XL 8 mm probe carries multiple agency certifications for hazardous area installations, including CSA, ATEX, and IECEx approvals. This provides flexibility for use in various global locations with different regulatory requirements.

Q2: Why do I need a standoff adapter (Option 35) for this housing?
A: The 3.5-inch standoff adapter increases the distance between the probe housing and the machine casing. This is beneficial when the casing surface is too hot for the housing's temperature rating, when insulation is present, or when mounting space is constrained.

Q3: What cable sizes can I use with the included cable seal grip?
A: The cable seal grip includes three interchangeable grommets that accommodate cable diameters of 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. This allows you to use a wide range of field wiring options.

Q4: How does the probe penetration (3.2 inches) relate to the standoff length?
A: The 3.2-inch probe penetration (Option 032) is measured from the mounting face of the housing. When combined with the 3.5-inch standoff adapter, the total probe extension into the machine is approximately 6.7 inches, providing greater reach for deep-well applications.

Q5: Is this housing suitable for pressurized machine casings?
A: No. While the 31000-28-05-35-032-03-02 seals against hose-directed water per NEMA 4X and IP66, it is not designed to resist internal or external pressure. For applications requiring a pressure seal, please contact Bently Nevada's custom design department for testing options.