31000-28-05-50-050-03-02 Bently Nevada Probe Housing

31000-28-05-50-050-03-02 Bently Nevada 31000 Proximity Probe Housing

Product Introduction

The 31000-28-05-50-050-03-02 is a versatile probe housing assembly from Bently Nevada's 31000 series, specifically engineered to accommodate 3300 XL 8 mm proximity probes with multiple agency approvals. This housing provides secure probe mounting, environmental sealing, and differential pressure containment for critical vibration monitoring applications.

This comprehensive configuration features a 5.0-inch standoff adapter, a 5.0-inch probe penetration depth, and a 0.5-meter probe cable length. The assembly includes an extensive fitting package with two plugs, one 3/4-14 NPT fitting, one 3/4-14 to 1/2-14 NPT SST reducer, and a cable seal grip with three interchangeable grommets for various cable diameters. Therefore, this housing offers exceptional flexibility for installations requiring standoff clearance and multiple cable entry options. We offer this genuine Bently Nevada housing for immediate delivery via FedEx, UPS, or DHL.

Technical Specifications

Probe Compatibility and Options
The 31000-28-05-50-050-03-02 is configured for the 3300 XL 8 mm probe with multiple approvals (Option A: 28). The probe cable length is 0.5 meters (20 inches) (Option B: 05). The assembly includes a 5.0-inch standoff adapter (Option C: 50) and a 5.0-inch probe penetration depth (Option D: 050). The mounting thread is 3/4-14 NPT (Option F: 02), which is required when ordering the standoff adapter option.

Fittings Package
Option E: 03 provides a comprehensive fittings package including:

• Two plugs for unused ports

• One 3/4-14 NPT fitting

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

• One cable seal grip with three interchangeable grommets for cable sizes:

  • 1/8 to 3/16 inches

  • 1/4 to 5/16 inches

  • 5/16 to 3/8 inches

Housing Material and Construction
The housing body is manufactured from glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic containing conductive fibers. This material offers exceptional chemical resistance, dimensional stability, and mechanical strength. Additionally, the sleeve material and retaining chain are constructed from AISI 304 stainless steel, while the outer sleeve and exterior screws use AISI 303 stainless steel. The O-ring material is Neoprene.

Protection Ratings and Certifications
This housing assembly carries multiple protection certifications for demanding environments. It holds a Type 4X rating certified by the Canadian Standards Association (CSA) and an IP66 rating verified by SC115582-1 (e) 106. Furthermore, it meets CENELEC standard EN50014 for electrostatic dissipation of plastic materials in hazardous areas. These ratings ensure the housing resists hose-directed water, dust ingress, and electrostatic buildup.

Temperature Rating
The 31000-28-05-50-050-03-02 operates reliably across a wide temperature range from -51°C to +105°C (-60°F to +221°F) . This broad operating envelope makes it suitable for extreme conditions encountered in outdoor installations, cold climates, and high-temperature industrial processes.

Mechanical and Environmental Parameters

Impact Strength and Durability
This housing demonstrates exceptional impact resistance. BASEEFA certified it to withstand two separate 4 Joule (3.0 ft·lb) impacts at -39°C (-38°F) and at 115°C (239°F). Additionally, CSA verified that samples withstand a 7 Joule (5.2 ft·lb) impact at ambient room temperature. These certifications guarantee the housing maintains integrity even under accidental mechanical shocks.

Structural Strength
The housing assembly exhibits impressive structural load capacity. Tests show the outer sleeve supporting 912 N (205 lb) placed approximately 38 mm (1.5 inches) from the unsupported end. The housing mounted on the outer sleeve through an end hole, with the cover fastened in place and grounding liner installed, demonstrates robust mechanical performance in real-world installations.

Pressure Sealing Capability
The 31000-28-05-50-050-03-02 is designed to seal differential pressure between the probe tip and the housing main body when used with a 3300 XL 8 mm probe. The internal sealing material consists of a Viton O-ring, while the O-ring between the sleeve and the housing is Neoprene. The housing is certified to seal against hose-directed water per NEMA 4X and IP66 standards. However, it is not designed to resist internal or external pressure, and probes are not pressure tested prior to shipment.

Installation Guidelines

Pre-Installation Checks
First, verify that the 31000-28-05-50-050-03-02 matches your required probe type, standoff length, penetration depth, and mounting thread. Specifically, confirm that you are using a 3300 XL 8 mm probe with multiple approvals and that the 5.0-inch standoff and penetration depths suit your application. Next, inspect all components, particularly the O-rings, threads, and fittings, for any visible damage.

Mounting Procedure
Begin by threading the housing assembly into the mounting hole using the 3/4-14 NPT thread. Then, tighten the retaining nut to the recommended torque of 29.4 N·m (260 in·lb) . This ensures a secure, leak-proof seal. Do not exceed this torque value, as overtightening may damage the threads or housing.

Cable Entry and Fitting Installation
Select the appropriate grommet from the three provided options based on your cable diameter. Install the cable seal grip with the correct grommet, then route the probe cable through the seal grip. Tighten the seal grip to create a watertight seal around the cable. Install the included plugs or the 3/4-14 to 1/2-14 NPT reducer in unused ports as required by your installation.

Packaging List

• 1 x Bently Nevada 31000-28-05-50-050-03-02 31000 Proximity Probe Housing Assembly

• 1 x Retaining nut (pre-installed)

• 1 x Grounding liner

• 2 x Plugs for unused ports

• 1 x 3/4-14 NPT fitting

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

• 1 x Cable seal grip with three interchangeable grommets (1/8-3/16", 1/4-5/16", 5/16-3/8")

• 1 x Installation instruction sheet

(Note: Calibration certificates, warranty documents, and the probe itself are not included.)

Shipping Information

All orders for the 31000-28-05-50-050-03-02 are dispatched within 24 hours of order confirmation. We ship exclusively via FedEx, UPS, or DHL to ensure fast and trackable delivery worldwide. Furthermore, each package is securely cushioned to prevent transit damage.

Frequently Asked Questions (FAQ)

1. Which probes are compatible with this housing assembly?
The 31000-28-05-50-050-03-02 is specifically designed for 3300 XL 8 mm proximity probes with multiple agency approvals. The "-28" option in the model number indicates this compatibility.

2. What is the purpose of the standoff adapter?
The 5.0-inch standoff adapter (Option C: 50) provides additional clearance between the mounting surface and the housing body. This is useful when the mounting surface is too close to the target or when you need to position the housing in a more accessible location for maintenance.

3. How do I select the correct grommet for my cable?
The housing includes three interchangeable grommets for cable diameters of 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. Select the grommet that closely matches your cable's outer diameter to ensure a proper watertight seal.

4. Is this housing suitable for outdoor installations?
Yes, the housing carries both Type 4X and IP66 ratings, certifying it against hose-directed water, dust ingress, and corrosion. These ratings make it suitable for outdoor and wash-down environments.

5. What should I do if I need pressure testing before installation?
The 31000-28-05-50-050-03-02 is not pressure tested prior to shipment. If your application requires pressure seal verification, please contact our custom design department to arrange testing before installation.