21000-16-05-15-034-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction: Solving Vibration Monitoring Challenges with the 21000-16-05-15-034-03-02

When rotating machinery operates in hazardous environments, accurate vibration monitoring becomes critical for preventing catastrophic failures. The 21000-16-05-15-034-03-02 Bently Nevada proximity probe housing assembly addresses this challenge directly. This robust assembly houses a 3300 XL 8 mm probe with a 0.5 m cable, providing precise displacement measurements. Engineers rely on this unit for continuous machine protection in explosive atmospheres.

Key Features and Technical Specifications of the 21000-16-05-15-034-03-02

The 21000-16-05-15-034-03-02 offers several distinctive features that set it apart. Below are the core specifications derived from the product data.

• Probe Option: 16 3300 XL 8 mm probe with connector
• Probe Cable Length: 05 0.5 m (20 in)
• Standoff Adapter: 1.5 in (38 mm) = 15
• Probe Penetration (D): 034 = 3.4 in
• Fittings: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets for cable sizes 1/8 to 3/8 inches
• Mounting Thread: 02 3/4-14 NPT
• Material: 21000 Aluminum body with 304 stainless steel sleeve
• Weight: 1.1 kg (2.4 lb) typical, without fittings
• Hazardous Area Approvals: CSA certified explosion-proof for Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F and G, Class III, Enclosure Type 4, T5 @ Ta = -50 °C to +40 °C, T4 @ Ta = -50 °C to +80 °C

A unique insight is the 8 mm probe size. This compact diameter allows installation in tight spaces while maintaining high sensitivity for early fault detection. The 3.4 in probe penetration provides flexibility for various machine case thicknesses.

Applications and Use Cases for the 21000-16-05-15-034-03-02

This housing assembly is ideal for monitoring critical rotating equipment such as turbines, compressors, and pumps in oil and gas, petrochemical, and power generation facilities. Its CSA explosion-proof certification makes it suitable for hazardous areas where flammable gases or dusts are present. For example, in a refinery, the 21000-16-05-15-034-03-02 can be mounted externally on a compressor casing to measure shaft vibration without compromising safety. Additionally, its compliance with API 670 Standard ensures reliable performance in demanding industrial applications.

Installation and Setup Guidance

Proper installation is key to achieving accurate readings. The mounting thread is 3/4-14 NPT, which simplifies attachment to standard conduit openings. For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be necessary to reduce side view effects. If the combined probe penetration (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range of the D option is 13 mm (± 0.5 in), allowing fine-tuning during setup.

Maintenance and Reliability Tips

Regular inspection of the housing assembly helps maintain long-term reliability. Check the O-rings and thread seal periodically for wear, especially in harsh environments. The aluminum body with stainless steel sleeve resists corrosion, but verify that all fittings remain tight. Following the manufacturer's guidelines ensures the unit continues to meet CSA Type 4 enclosure ratings. This proactive approach reduces unplanned downtime and extends service life.

Compatibility and Integration

The 21000-16-05-15-034-03-02 works with Bently Nevada monitoring systems that accept 8 mm proximity probes. It integrates seamlessly with existing vibration monitoring networks. The assembly is fully compliant with the American Petroleum Institute's API 670 Standard, ensuring compatibility with industry-standard mounting and wiring practices. For intrinsically safe applications, use hazardous area approved proximity probes with this housing.

Frequently Asked Questions about the 21000-16-05-15-034-03-02

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

A: The probe cable length is 0.5 m (20 in), as indicated by the 05 suffix code.

Q: Is this housing assembly certified for hazardous areas?

A: Yes, it is CSA certified explosion-proof for Class 1 Divisions 1 and 2 Groups C and D, Class 2 Divisions 1 and 2 Groups E, F and G, and Class III, with Enclosure Type 4.

Q: What mounting thread does the 21000-16-05-15-034-03-02 use?

A: It uses a 3/4-14 NPT mounting thread, which is the default option when the standoff adapter length is not 00.

Q: What materials are used in the housing construction?

A: The body is made of aluminum, and the sleeve is 304 stainless steel for durability and corrosion resistance.

Q: What is the typical weight of this assembly?

A: The typical weight is 1.1 kg (2.4 lb) without fittings.

Product Support and Availability

The 21000-16-05-15-034-03-02 is available as new and original in factory packing from Petro Auto Tech. It is in stock and ready to ship. For assistance with ordering or technical questions, contact Petro Auto Tech directly.