24701-28-10-00-110-00-02 | Bently Nevada 3300 XL 8mm Proximity Probe Housing

Introduction to the 24701-28-10-00-110-00-02

When machinery vibration threatens uptime, the 24701-28-10-00-110-00-02 from Bently Nevada provides a rugged, field-proven enclosure for proximity probes. This housing assembly is designed to shield the sensing element in harsh industrial environments, ensuring reliable data for condition monitoring. As part of the 24701 series, it combines mechanical protection with precise probe positioning, helping you avoid costly unplanned downtime.

Built with a 303 stainless steel body and a 304 stainless steel sleeve, this assembly resists corrosion and mechanical wear. The unit includes a dome cover, threaded ports for conduit, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. Optional conduit fittings and standoff adapters are available separately, allowing customization for specific installations.

Key Features and Technical Specifications

The 24701-28-10-00-110-00-02 is engineered for precise, repeatable vibration measurement. Its key specifications include:

• Probe option: 3300 XL 8mm with approval option
• Probe cable length: 39 inches (1.0 meter)
• Probe penetration: 11 inches
• Mounting thread: 3/4-14 NPT
• No standoff adapter (option 00)
• Without fittings (option 00)
• Material: 303 stainless steel body, 304 stainless steel sleeve
• Weight: 1.8 kg (4.1 lb) typical, without fittings
• Maximum (C) + (D) with visible probe (P/N and S/N): 17.0 in (43.18 mm)
• Maximum (C) + (D) dimension: 29.2 in (74.2 mm)

The 3300 XL 8mm probe option is a distinctive feature, offering high sensitivity for detecting small shaft displacements. This precision helps you catch bearing wear or misalignment early, reducing repair costs and extending equipment life. The 1-meter cable length suits many standard installations, while the 3/4-14 NPT thread ensures a secure, leak-proof mount.

Cost-Benefit and ROI Analysis

Investing in the 24701-28-10-00-110-00-02 delivers long-term value through enhanced reliability. The stainless steel construction resists corrosion, minimizing replacement frequency. The precise probe positioning reduces measurement errors, preventing false alarms that lead to unnecessary shutdowns. Over time, these benefits translate into lower maintenance costs and higher production efficiency.

Moreover, the modular design allows you to replace only the probe or sleeve if damaged, rather than the entire assembly. This reduces spare parts inventory and lowers total cost of ownership. For plants running critical rotating equipment, the payback period is often short, given the avoided downtime costs.

Applications and Use Cases

The 24701-28-10-00-110-00-02 is suitable for a wide range of rotating machinery, including turbines, compressors, pumps, and motors. In these applications, it provides continuous vibration monitoring, enabling predictive maintenance strategies. For example, in a petrochemical plant, early detection of shaft vibration can prevent catastrophic failure, saving millions in lost production and repair.

Additionally, the assembly's robust design makes it ideal for harsh environments with high humidity, dust, or temperature extremes. The 303/304 stainless steel materials withstand corrosive atmospheres, ensuring long service life even in offshore or chemical processing facilities.

Installation and Setup

Proper installation is critical for accurate readings. The 24701-28-10-00-110-00-02 mounts via a 3/4-14 NPT thread, which should be torqued to the manufacturer's specification. Ensure the probe tip is positioned correctly relative to the shaft surface, following the gap voltage guidelines from Bently Nevada. The cable length of 1 meter should be routed away from high-voltage sources to avoid interference.

If a standoff adapter is required, it can be added separately. The housing includes threaded ports for conduit connections, simplifying wiring. Always consult the official Bently Nevada installation manual for detailed steps and torque values.

Maintenance and Reliability

Routine inspection of the 24701-28-10-00-110-00-02 ensures long-term reliability. Periodically check the O-rings and thread seal for signs of wear or degradation, as these prevent moisture ingress. Verify that the probe cable is not chafed or pinched, and that the mounting thread remains tight. Environmental factors like vibration and temperature can loosen fittings over time, so periodic re-torquing is recommended.

Because the assembly is passive (no electronics), maintenance is minimal. However, keeping the probe tip clean is essential for accurate measurements. Use only approved cleaning methods from the manufacturer to avoid damaging the sensing element.

Compatibility and Integration

The 24701-28-10-00-110-00-02 is designed to work with Bently Nevada 3300 XL 8mm proximity probes and compatible monitoring systems. It integrates seamlessly with Bently Nevada's vibration monitoring hardware, such as the 3500 series. The 1-meter cable length matches standard extension cables, allowing straightforward connection to junction boxes or monitors.

For existing installations, this housing can replace older models, provided the mounting thread and probe length are compatible. Always verify compatibility with your current system before ordering.

Troubleshooting and Common Issues

If you encounter erratic readings, first check the probe gap voltage. Incorrect gap is a common issue, often caused by improper installation. Ensure the probe tip is within the specified range from the shaft. Another frequent problem is cable damage, which can cause intermittent signals. Inspect the cable for cuts or kinks, especially near the connector.

Moisture ingress can also affect performance. Check the O-rings and thread seal for integrity. If the housing is exposed to washdowns, consider adding conduit fittings to protect the cable entry. For persistent issues, consult the Bently Nevada manual or contact Petro Auto Tech for technical support.

FAQ about the 24701-28-10-00-110-00-02

Q: What is the probe cable length for this housing?

A: The probe cable length is 39 inches (1.0 meter), as indicated by the suffix code '10'.

Q: What mounting thread does the 24701-28-10-00-110-00-02 use?

A: It uses a 3/4-14 NPT thread, which is a standard industrial thread for secure mounting.

Q: Does this assembly include conduit fittings?

A: No, the fittings option is '00', meaning it comes without fittings. Optional conduit fittings can be ordered separately.

Q: What is the weight of the housing assembly?

A: The typical weight is 1.8 kg (4.1 lb) without fittings.

Q: What is the probe penetration depth?

A: The probe penetration is 11 inches, as indicated by the '110' suffix.

Product Support and Availability

The 24701-28-10-00-110-00-02 is available from Petro Auto Tech, a trusted industrial automation parts supplier. We offer new and original factory-packed units with a 12-month warranty. For pricing and lead time, contact our sales team. Please verify the current lifecycle status and availability with Petro Auto Tech before ordering.