21000-28-05-20-095-04-02 | Bently Nevada 8 mm Probe Housing Assembly

What Is the 21000-28-05-20-095-04-02?

When industrial machinery demands precise vibration monitoring, the 21000-28-05-20-095-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for hazardous area applications. It includes an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh environments. The assembly supports a 3300 XL 8 mm probe with selectable hazardous area approvals, making it a reliable choice for critical asset protection.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in).
• Standoff Adapter: 2 in length.
• Probe Penetration: 9.5 in.
• Fitting Option: One 3/4-14 NPT plug.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Enclosure Rating: CSA Type 4, explosion-proof for hazardous areas.

A distinctive feature is the 9.5 in probe penetration, which allows deep insertion into machinery for accurate proximity measurements. This spec is critical for applications requiring extended reach without compromising signal integrity.

Applications & Use Cases

Engineers rely on the 21000-28-05-20-095-04-02 for vibration monitoring in rotating equipment such as turbines, compressors, and pumps. Its CSA Type 4 enclosure and explosion-proof certification make it suitable for hazardous areas like oil refineries and chemical plants. Moreover, the assembly complies with API 670 standard for externally mounted proximity probe housings, ensuring industry-standard performance.

Installation Guide

Mount the housing using the 3/4-14 NPT thread option. Ensure the standoff adapter length matches the required 2 in for proper probe positioning. The probe cable length of 0.5 m should be routed through conduit connections to maintain environmental sealing. Always verify the fitting option includes the 3/4-14 NPT plug to prevent ingress.

Maintenance & Reliability

Regularly inspect the O-rings and thread seal for wear to maintain the explosion-proof rating. The aluminum body with stainless steel sleeve resists corrosion, reducing maintenance frequency. For long-term reliability, verify that the probe cable remains undamaged and the dome cover is securely fastened.

Compatible Systems

This housing assembly works with Bently Nevada 3300 XL 8 mm proximity probes and is compatible with monitoring systems that accept such probes. The CSA certification ensures integration into hazardous area installations without additional barriers.

FAQs about 21000-28-05-20-095-04-02

Q: What is the probe cable length for the 21000-28-05-20-095-04-02?

A: The probe cable length is 0.5 m (20 in).

Q: Is the 21000-28-05-20-095-04-02 suitable for hazardous areas?

A: Yes, it is CSA certified explosion-proof for Class I Divisions 1 and 2 Groups C and D, and Class II Divisions 1 and 2 Groups E, F, and G.

Q: What is the weight of the 21000-28-05-20-095-04-02?

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

Q: What mounting thread does the 21000-28-05-20-095-04-02 use?

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

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

A: The probe penetration is 9.5 in.

Product Support & Availability

The 21000-28-05-20-095-04-02 is available as new and original in factory packing from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.