Bently Nevada 173688-01-20-12-05 Proximity Probe

Bently Nevada 173688-01-20-12-05 3300 XL 8 mm Proximity Probe

Product Introduction

The Bently Nevada 173688-01-20-12-05 belongs to the trusted 3300 XL series of eddy current proximity probes. Specifically, this 8 mm probe provides non-contact measurement of vibration and shaft position in rotating machinery. Furthermore, its robust construction and hazardous area certifications make it suitable for demanding environments like turbines, compressors, and pumps. The specific configuration of model 173688-01-20-12-05 includes a 1/2-14 NPT mounting thread, a 2.0 metre system length, and a FluidLoc cable with a Miniature ClickLoc connector. Consequently, this probe delivers reliable performance for critical machine protection and monitoring applications.

Technical Specifications

The 173688-01-20-12-05 Proximity Probe offers precision measurement capabilities for a wide range of industrial applications.

Measurement and Performance

This 8 mm probe provides a linear measurement range suitable for most turbomachinery applications. The probe tip utilizes polyphenylene sulfide (PPS) material, which offers excellent resistance to wear and chemical exposure. Meanwhile, the probe case consists of AISI 303 or 304 stainless steel, ensuring durability in harsh industrial environments.

Mechanical Configuration

For the Bently Nevada 173688-01-20-12-05, the unthreaded length option is 01, which equals 0.1 inches. Additionally, the overall case length option is 20, corresponding to 2.0 inches. The system length is also option 20, providing a 2.0 metre (6.6 feet) cable. This shorter cable length suits installations where the monitor is located closer to the probe mounting point.

Thread and Mounting

The mounting thread for this model is 1/2-14 NPT. This standard thread size ensures compatibility with most probe mounting fixtures and adapters. Moreover, the 3300 XL series probes are designed to seal differential pressure between the probe tip and case using a Viton O-ring.

Cable and Connector

Option 12 designates the connector and cable type as a Miniature ClickLoc coaxial connector with FluidLoc cable. The FluidLoc cable option offers additional fluid resistance for challenging applications. However, note that this option is not necessary for the vast majority of 330105 and 330106 installations due to the presence of the probe sleeve. Therefore, carefully consider your specific application before ordering this cable option.

Agency Approvals and Certifications

The 173688-01-20-12-05 carries approval option 05, which includes CSA, ATEX, and IECEx certifications. As a result, this probe is suitable for installation in hazardous areas requiring explosion-proof equipment. These certifications demonstrate compliance with international safety standards for use in potentially explosive atmospheres.

Environmental and Pressure Considerations

The probe sealing material consists of a Viton O-ring designed to seal differential pressure between the probe tip and case. Nevertheless, probes are not pressure tested prior to shipment. For applications requiring verification of the pressure seal, contact our custom design department to arrange testing services.

Installation and Application Guidance

Proper installation of the Bently Nevada 173688-01-20-12-05 ensures accurate and reliable measurements.

Mounting Procedure

First, ensure the mounting surface is clean and free of debris. Next, thread the probe into the mounting fixture using the 1/2-14 NPT threads. Meanwhile, take care not to overtighten, as this may damage the threads or affect the probe's performance. Additionally, maintain the recommended probe tip gap as specified in your monitoring system documentation.

Cable Routing

For the FluidLoc cable on model 173688-01-20-12-05, proper routing is essential. Avoid sharp bends and contact with moving machinery components. Furthermore, secure the cable using appropriate clamps or ties to prevent mechanical damage. The Miniature ClickLoc connector provides a secure, reliable connection to the extension cable.

Cable Capacitance Considerations

For optimal system performance, consider the total cable capacitance. The 3300 XL system requires specific capacitance values for proper calibration. Consequently, always use Bently Nevada approved cables and connectors to maintain measurement accuracy.

Packaging List

Each order of the Bently Nevada 173688-01-20-12-05 includes the following items:

• One Bently Nevada 173688-01-20-12-05 3300 XL 8 mm Proximity Probe with FluidLoc cable

• One Miniature ClickLoc coaxial connector pre-installed on cable

• Product installation and handling guide

All items ship in protective packaging to prevent damage during transportation.

Shipping Information

We ship all orders via FedEx, UPS, or DHL. Consequently, each package includes tracking information for real-time shipment monitoring. Standard delivery typically takes 3 to 5 business days depending on the destination.

Frequently Asked Questions

1. What are the typical applications for the 173688-01-20-12-05 probe?

This probe is commonly used for radial vibration and axial position monitoring in steam turbines, gas turbines, compressors, pumps, and other rotating equipment. Specifically, the 8 mm size suits medium to large machinery where non-contact measurement is required.

2. What is the difference between this model and the 173687-01-50-12-05?

The primary difference lies in the system length. The 173688-01-20-12-05 has a 2.0 metre cable, while the 173687-01-50-12-05 has a 5.0 metre cable. Additionally, the overall case length differs between these two configurations.

3. What hazardous area approvals does this probe carry?

The approval option 05 includes CSA, ATEX, and IECEx certifications. Therefore, the 173688-01-20-12-05 is suitable for use in potentially explosive environments requiring these specific standards.

4. Are these probes pressure tested before shipping?

Bently Nevada does not pressure test 3300 XL 8 mm probes prior to shipment. For applications requiring pressure seal verification, please contact our custom design department to arrange specialized testing.

5. What materials are used in the probe tip and case?

The probe tip is made of polyphenylene sulfide (PPS) for excellent wear and chemical resistance. Meanwhile, the probe case is constructed from AISI 303 or 304 stainless steel for durability and corrosion resistance in industrial environments.