31000-28-05-00-012-01-02 Bently Nevada Sensor Housing

Bently Nevada 31000-28-05-00-012-01-02 Proximity Probe Housing

Product Introduction

The Bently Nevada 31000-28-05-00-012-01-02 provides a secure and protective enclosure for vibration monitoring sensors in demanding applications. This model specifically supports the 3300 XL 8 mm probe and comes with multiple agency approvals for global use. Its robust construction ensures reliable operation in extreme temperatures, from -51°C to +105°C. The housing offers comprehensive protection against environmental hazards and electrostatic discharge.

Detailed Technical Specifications

The Bently Nevada 31000 housing is engineered for precision measurement in critical machinery. It includes a 0.5-metre (20-inch) probe cable. The probe penetration is set at 1.2 inches, offering optimal positioning for accurate readings. Additionally, this unit comes with one 3/4-14 NPT fitting and two plugs for flexible installation. The mounting thread is also a 3/4-14 NPT, ensuring a secure and standardised fit.

Furthermore, the protection ratings are extensive. The housing holds a Type 4X rating from the Canadian Standards Association (CSA). The IP66 rating has been verified by SC115582-1 (e) 106, confirming complete dust-tightness and protection against powerful water jets. Moreover, it meets CENELEC standard EN50014 for electrostatic dissipation in hazardous areas, making it suitable for sensitive environments.

The housing also features a glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic construction with conductive fibres. This material provides excellent dimensional stability and chemical resistance. The sleeve and retaining chain are made from AISI 304 stainless steel, while the outer sleeve and exterior screws use AISI 303 stainless steel for enhanced corrosion resistance. The O-ring is manufactured from Neoprene® for reliable sealing performance.

Mechanical and Environmental Parameters

This model excels in harsh conditions. The Bently Nevada 31000-28-05-00-012-01-02 operates reliably across a wide temperature range of -51°C to +105°C (-60°F to +221°F). Its impact strength has been rigorously tested. BASEEFA certified the housing to withstand two separate 4 Joule (3.0 ft·lb) impacts at -39°C and at 115°C. Additionally, CSA verified samples of the housing and cover to withstand a 7 Joule (5.2 ft·lb) impact at ambient room temperature.

The mechanical strength is equally impressive. The outer sleeve supports 912 N (205 lb) when mounted on a test stand, with the housing supported approximately 38 mm from the unsupported end. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb). The total weight of this unit is 1.2 kg (2.6 lb), making it manageable for field installation.

Installation Guidance

Installing the Bently Nevada 31000 requires attention to several key steps. First, ensure the mounting surface is clean and free from debris. The 3/4-14 NPT mounting thread provides a standardised connection point. Next, carefully route the 0.5-metre probe cable to avoid sharp bends or excessive tension. For optimal performance, apply the recommended torque of 29.4 N·m to the retaining nut. This ensures a proper seal without damaging the O-ring.

Additionally, when installing in hazardous areas, observe all relevant safety regulations. The CENELEC EN50014 rating requires proper grounding to dissipate static charges effectively. The conductive fibres in the PPS housing facilitate this process. Finally, verify that the probe penetration depth is set to 1.2 inches before securing the fittings. This configuration ensures accurate proximity measurements.

Packaging List

This shipment for the Bently Nevada 31000-28-05-00-012-01-02 includes the following items:

• 1 x Proximity probe housing assembly

• 1 x 0.5-metre probe cable (pre-attached)

• 1 x 3/4-14 NPT fitting

• 2 x Plugs for unused ports

• 1 x Installation instruction sheet

Shipping Information

All orders are dispatched worldwide via FedEx, UPS, or DHL. Tracking numbers are provided upon shipment. Delivery typically takes 3-7 business days depending on the destination region.

Frequently Asked Questions (FAQ)

Q1: Which probe is compatible with this Bently Nevada 31000 housing?
This housing is specifically designed for the 3300 XL 8 mm probe with multiple approvals. It cannot accommodate other probe sizes without an adapter.

Q2: Can this 31000-28-05-00-012-01-02 be used outdoors in wet conditions?
Yes, absolutely. The IP66 and Type 4X ratings confirm it is fully protected against dust, rain, and high-pressure water jets, making it suitable for outdoor installations.

Q3: What is the purpose of the conductive fibres in the housing material?
These fibres enable electrostatic dissipation, which is critical for hazardous area installations. This feature meets CENELEC EN50014 requirements for plastic materials in explosive environments.

Q4: How do I verify the correct probe penetration depth?
This model comes with a fixed 1.2-inch penetration setting. You should confirm the measurement after installation using a depth gauge or calliper for accuracy.

Q5: Is special tooling required for installing the Bently Nevada 31000?
No, standard hand tools suffice. However, a torque wrench is strongly recommended to achieve the specified 29.4 N·m on the retaining nut for proper sealing.