Bently Nevada 31000-30-05-40-014-03-02 Housing

31000 Proximity Probe Housing with Extended Standoff

Product Introduction

The Bently Nevada 31000-30-05-40-014-03-02 provides an extended mounting solution for proximity probe systems. Specifically, this housing includes a 4.0-inch standoff adapter, which bridges significant gaps between mounting surfaces and measurement targets. Furthermore, the probe features a connector protector (option 30) for enhanced reliability in harsh conditions. The shallow 1.4-inch probe penetration works well for applications requiring minimal insertion depth. Meanwhile, the 0.5-metre cable offers convenient connection to nearby instrumentation. The advanced fitting package includes a cable seal grip with multiple grommets and a stainless steel reducer. Therefore, this model suits retrofit projects, custom machinery, and installations with unusual mounting geometries. The Bently Nevada 31000 series continues to lead the market in probe housing versatility and durability.

Technical Specifications

Probe and Cable Configurations

This housing supports the 3300 XL 8 mm probe with a connector protector and multiple approvals, as specified by option code 30. The connector protector shields the electrical connection from moisture, dust, and mechanical damage. The probe cable measures 0.5 metre (20 inches) , which suits installations requiring short, manageable cable runs. The standoff adapter option is set to 40, providing a 4.0-inch (102 mm) extension. This extended standoff proves valuable when the mounting surface is far from the shaft or target area. Moreover, the probe penetration option is 014, meaning the probe extends 1.4 inches into the measurement zone. This shallow depth minimizes the risk of probe contact with rotating components. The mounting thread uses 3/4-14 NPT (option 02), which is required when ordering the standoff adapter. Therefore, this configuration offers exceptional flexibility for challenging mounting scenarios.

Fittings and Connection Options

The fittings option (03) delivers a comprehensive and adaptable connection package. First, it includes two plugs and one 3/4-14 NPT fitting for standard conduit connections. Additionally, a 3/4-14 to 1/2-14 NPT stainless steel reducer allows adaptation to smaller conduit sizes. Furthermore, the set includes a cable seal grip with three interchangeable grommets. Specifically, these grommets accommodate cable diameters of 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches. Therefore, you can use this housing with various cable types without purchasing separate adapters. This thoughtful fitting selection reduces installation time and simplifies inventory management.

Electrical and Environmental Ratings

The housing carries a Type 4X rating certified by the Canadian Standards Association (CSA). In addition, it meets IP66 requirements, verified by test report SC115582-1 (e) 106. This combination ensures complete protection against dust ingress and powerful water jets. Furthermore, the housing complies with CENELEC standard EN50014 for electrostatic dissipation of plastic materials in hazardous areas. Consequently, the unit prevents dangerous static charge accumulation in explosive atmospheres. The operating temperature range extends from -51°C to +105°C (-60°F to +221°F) . Therefore, this Bently Nevada 31000 housing performs reliably across a broad spectrum of industrial conditions.

Mechanical and Structural Properties

Materials and Construction

The housing body consists of glass-reinforced Polyphenylene Sulfide (PPS) thermoplastic containing conductive fibers. This material delivers high mechanical strength and excellent resistance to chemicals and solvents. Additionally, the sleeve and retaining chain use AISI 304 stainless steel for superior corrosion protection. The outer sleeve and exterior screws employ AISI 303 stainless steel, which offers good machinability and durable performance. Meanwhile, the O-ring uses Neoprene to maintain a dependable seal against moisture, dust, and contaminants. These carefully selected materials ensure the housing withstands corrosive atmospheres, washdown chemicals, and outdoor exposure.

Strength and Impact Resistance

The housing exhibits outstanding structural integrity under load. For instance, tests confirm the outer sleeve supports 912 N (205 lb) when mounted horizontally with the housing attached through an end hole. This load was applied 38 mm (1.5 inches) from the unsupported end with the cover in place. Moreover, BASEEFA certified the impact strength to withstand two separate 4 Joule (3.0 ft·lb) impacts at both -39°C (-38°F) and 115°C (239°F). In addition, CSA verified that housing and cover samples survive a 7 Joule (5.2 ft·lb) impact at ambient room temperature. Therefore, this housing resists accidental impacts, vibration, and rough handling without losing probe alignment. The recommended torque for the retaining nut is 29.4 N·m (260 in·lb) .

Installation Guidelines

Mounting with 4-Inch Standoff Adapter

First, clean the mounting surface thoroughly to ensure proper sealing and stability. Next, attach the 4.0-inch standoff adapter to the mounting thread using the 3/4-14 NPT connection. Specifically, apply thread sealant to prevent leakage through the adapter threads. Then, thread the 3300 XL 8 mm probe with connector protector through the housing and standoff assembly. Adjust the probe to achieve the 1.4-inch penetration depth as specified by option 014. After that, tighten the retaining nut to 29.4 N·m (260 in·lb) . The 0.5-metre cable provides sufficient length for connection to junction boxes or signal conditioners. Additionally, select the appropriate grommet for your cable diameter and install it in the cable seal grip. Finally, use the reducer if your conduit requires the smaller 1/2-14 NPT size.

Cable Routing and Sealing

Proper cable sealing is essential for maintaining the IP66 rating. First, choose the correct grommet based on your cable outer diameter. The three supplied grommets cover diameters from 1/8 inch up to 3/8 inch. Insert the cable through the grommet and tighten the seal grip until it firmly compresses around the cable. Meanwhile, seal any unused ports with the supplied plugs. For installations requiring conduit, connect the 3/4-14 NPT fitting or use the reducer for 1/2-14 NPT connections. Verify that all fittings are tightened to prevent water ingress during washdown cycles. The connector protector adds an extra layer of defense against environmental contaminants at the probe connection point.

Environmental Considerations

The operating temperature range is extensive, from -51°C to +105°C. However, avoid rapid temperature changes that might affect measurement accuracy. Furthermore, the IP66 and Type 4X ratings allow outdoor installation and high-pressure washdowns. However, always inspect the O-ring condition before closing the cover. Periodic re-torque of the retaining nut is recommended to maintain secure probe positioning. For hazardous area installations, comply with local regulations regarding EN50014 electrostatic dissipation requirements.

Packaging List

• 1 x Bently Nevada 31000-30-05-40-014-03-02 probe housing assembly

• 1 x Standoff adapter (4.0-inch)

• 1 x Connector protector (pre-installed on probe)

• 1 x Outer sleeve (AISI 303 stainless steel)

• 1 x Retaining chain (AISI 304 stainless steel)

• 1 x 3/4-14 NPT fitting

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

• 2 x Plugs for unused ports

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

• 1 x Neoprene O-ring (pre-installed)

• 1 x Grounding liner

• 1 x Installation instruction sheet

Shipping Method: FedEx, UPS, DHL

Frequently Asked Questions

1. What does the connector protector do?
The connector protector shields the probe's electrical connection from moisture, dust, and mechanical impacts. Option code 30 includes this feature for enhanced reliability in harsh environments.

2. Why is the standoff adapter so long on this model?
The 4.0-inch standoff allows the Bently Nevada 31000 housing to reach targets that are located far from the mounting surface, such as in custom machinery or retrofit applications.

3. What is the probe penetration depth for this version?
Option 014 sets the probe penetration at 1.4 inches. This shallow depth minimizes the risk of contact with rotating components.

4. Which cable sizes fit the supplied seal grip?
The included cable seal grip comes with three grommets for cable diameters of 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches.

5. Can I use this housing without the reducer?
Yes. Use the 3/4-14 NPT fitting directly for standard conduit connections. The reducer is only needed if you require a smaller 1/2-14 NPT connection.