21000-16-10-00-090-03-02 | Bently Nevada 9.0in Probe Penetration Housing Assembly

What Is the Bently Nevada 21000-16-10-00-090-03-02?

When industrial machinery demands precise vibration monitoring, the 21000-16-10-00-090-03-02 from Bently Nevada delivers robust performance. This proximity probe housing assembly is part of the trusted 21000 series, engineered for hazardous area applications. It combines an aluminum body with a 304 stainless steel sleeve for durability. With a 9.0in probe penetration and 1.0m cable, it suits tight installations. The assembly includes a 3300 XL 8 mm probe with connector, ensuring accurate data collection.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector.
• Cable Length: 1.0 m (39 in) for flexible routing.
• Probe Penetration: 9.0 in (Option D Dimension) for deep access.
• Mounting Thread: 3/4-14 NPT for secure installation.
• Fittings: One 3/4-14 NPT plug, one reducer, and cable seal grip.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Hazardous Area Approval: CSA certified for Class 1 Divisions 1 and 2 Groups C and D.

A standout spec is the 9.0in probe penetration, enabling monitoring in deep machine cavities where standard probes cannot reach.

Applications & Use Cases

Engineers use the 21000-16-10-00-090-03-02 in rotating machinery like turbines, compressors, and pumps. Its explosion-proof rating makes it ideal for oil and gas, petrochemical, and power generation environments. For example, in a refinery, this housing assembly provides reliable shaft vibration data, reducing unplanned downtime. Additionally, its CSA Type 4 enclosure withstands harsh weather and washdowns.

Installation Guide

Mount the housing using the 3/4-14 NPT thread for a leak-proof seal. For probe penetration lengths between 1.0 and 2.0 inches, counter bore the machine case to reduce side view effects. If the total probe length (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range of the probe penetration option D is 13 mm (± 0.5 in). Use the included cable seal grip with appropriate grommets for cable sizes from 1/8 to 3/8 inches.

Maintenance & Reliability

Regularly inspect the O-rings and thread seal for wear to maintain the explosion-proof rating. The stainless steel sleeve resists corrosion, extending service life in wet environments. Periodic verification of the probe cable and connector integrity ensures consistent signal quality. Following these steps minimizes costly repairs and supports long-term reliability.

Compatibility & Integration

The 21000-16-10-00-090-03-02 works with Bently Nevada monitoring systems that accept 3300 XL 8 mm proximity probes. It is fully compliant with the API 670 Standard for externally mounted proximity probe housings. The assembly supports hazardous area approvals for intrinsically safe applications when paired with approved probes.

FAQs about the 21000-16-10-00-090-03-02

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

A: The probe penetration (Option D Dimension) is 9.0 inches.

Q: Is this housing assembly CSA approved?

A: Yes, it is CSA certified for explosion-proof applications in Class 1 Divisions 1 and 2 Groups C and D.

Q: What cable length does the 21000-16-10-00-090-03-02 include?

A: It includes a 1.0 m (39 in) probe cable.

Q: Can I use this housing in a hazardous area?

A: Yes, it is rated for hazardous areas with CSA Type 4 enclosure and non-incendive circuit per drawing 140979.

Q: What mounting thread does this assembly use?

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

Product Support & Availability

The 21000-16-10-00-090-03-02 is available from Petro Auto Tech as new and original in factory packing. Contact Petro Auto Tech for current lifecycle status and ordering details.