24701-28-05-00-110-03-02 | Bently Nevada 0.5m Proximity Probe Housing

Introduction to the Bently Nevada 24701-28-05-00-110-03-02

When machinery reliability depends on precise vibration monitoring, the 24701-28-05-00-110-03-02 from Bently Nevada delivers the rugged housing needed to protect critical proximity probes. This assembly is engineered for industrial environments where consistent measurement is non-negotiable.

Part of the 24701 series, this housing assembly is designed to accommodate a 3300 XL 8mm proximity probe with a connector option. The model number 24701-28-05-00-110-03-02 specifies a 0.5 meter probe cable, no standoff adapter, 11-inch probe penetration, and a 3/4-14 NPT mounting thread.

Built with a 303 stainless steel body and a 304 stainless steel sleeve, this housing provides robust mechanical protection. The assembly includes a dome cover, threaded ports for conduit, a probe sleeve, O-rings, a reverse mount probe, a thread seal, and optional conduit fittings.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8mm with approval option
• Probe Cable Length: 20 inches (0.5 meters)
• Probe Penetration: 11 inches
• Mounting Thread: 3/4-14 NPT
• Fittings Option: Includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable sizes from 1/8 to 3/8 inches
• Material: 303 stainless steel body with 304 stainless steel sleeve
• Weight: 1.8 kg (4.1 lb) typical, without fittings

The housing assembly is designed to maintain a maximum (C) + (D) dimension of 13.5 inches (34.3 mm), ensuring proper probe positioning. The visible probe part number and serial number are not visible in this configuration.

Real-World Applications

In rotating machinery monitoring, the 24701-28-05-00-110-03-02 is used to mount proximity probes that measure shaft vibration and position. Industries such as power generation, oil and gas, and petrochemical rely on these assemblies for continuous machine protection.

For example, in a steam turbine train, this housing assembly can be installed at bearing locations to provide accurate radial vibration readings. The stainless steel construction resists corrosion in harsh environments, while the NPT threads allow secure conduit connections.

Because the assembly includes a reverse mount probe, it simplifies installation in confined spaces. The optional fittings accommodate various cable diameters, making it adaptable to different routing requirements.

Installation and Setup Guidance

When installing the 24701-28-05-00-110-03-02, ensure the mounting thread (3/4-14 NPT) is clean and free of debris. Apply a suitable thread sealant to prevent leakage and maintain a secure fit.

Position the housing so that the probe sleeve length matches the required penetration (11 inches). Verify that the probe cable length (0.5 meters) is sufficient for routing to the monitor or junction box without strain.

Use the provided cable seal grip and grommets to secure cables of 1/8 to 3/8 inches diameter. Tighten the dome cover evenly to compress the O-rings and maintain an environmental seal.

Maintenance and Reliability Tips

Regular inspection of the housing assembly is essential for long-term reliability. Check the O-rings and thread seal for wear or damage during routine maintenance intervals.

Verify that the dome cover remains tight and that the conduit connections are secure. Any signs of corrosion or mechanical damage should be addressed promptly to prevent probe misalignment.

Because the probe is reverse-mounted, ensure that the cable is not pinched or abraded during operation. Periodically confirm that the probe gap is within the recommended range using the manufacturer's calibration procedure.

Compatibility and Integration

The 24701-28-05-00-110-03-02 is designed to work with Bently Nevada 3300 XL 8mm proximity probes. This housing assembly is compatible with standard Bently Nevada monitoring systems that accept 8mm probe inputs.

For integration, verify that the probe cable length and connector type match your system's requirements. The 3/4-14 NPT mounting thread is a common industrial standard, allowing installation into standard bearing housing ports.

Troubleshooting Common Issues

If vibration readings appear unstable, first check the probe gap and cable connections. Loose fittings or damaged grommets can allow moisture ingress, affecting signal integrity.

Inspect the housing for any signs of physical impact that could alter probe alignment. If the probe sleeve is bent, replace the assembly to restore accurate measurement.

For persistent issues, consult the Bently Nevada documentation or contact Petro Auto Tech for technical support.

Frequently Asked Questions

What is the probe cable length for the 24701-28-05-00-110-03-02?

The probe cable length is 20 inches (0.5 meters).

What mounting thread does this housing use?

It uses a 3/4-14 NPT mounting thread.

What is the probe penetration depth?

The probe penetration is 11 inches.

What materials are used in the housing?

The body is 303 stainless steel, and the sleeve is 304 stainless steel.

Is a standoff adapter included?

No, the model specifies no standoff adapter.

Availability and Support

The 24701-28-05-00-110-03-02 is available from Petro Auto Tech as a new, original factory-packed unit. Our team can assist with product selection and ordering.

Contact Petro Auto Tech for current availability and delivery options.