21000-16-10-20-083-03-02 | Bently Nevada 8.3 in Probe Housing Assembly

Introduction to the 21000-16-10-20-083-03-02

When machinery vibration threatens production uptime, the 21000-16-10-20-083-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is engineered for hazardous environments, offering a 3300 XL 8 mm probe with a 1.0 m cable. Its 8.3 in probe penetration ensures accurate measurement in tight spaces, reducing costly false alarms. The aluminum body with a 304 stainless steel sleeve withstands harsh conditions, extending service life and lowering total cost of ownership.

Key Features & Technical Specs of the 21000-16-10-20-083-03-02

• Probe Option: 3300 XL 8 mm probe with connector for reliable signal transmission.
• Cable Length: 1.0 m (39 in) cable minimizes signal loss and simplifies routing.
• Standoff Adapter: 2 in standoff adapter ensures proper probe positioning.
• Probe Penetration: 8.3 in (083) penetration depth for precise vibration sensing.
• Mounting Thread: 3/4-14 NPT thread for secure installation in standard ports.
• Fittings: Includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with three grommet sizes.
• Material: Aluminum body with 304 stainless steel sleeve for corrosion resistance.
• Weight: 1.1 kg (2.4 lb) typical, without fittings, for easy handling.
• Certifications: CSA explosion-proof for Class 1 Divisions 1 and 2 Groups C and D; RoHS compliant.

The 8.3 in penetration depth is a standout spec that enables installation in machines with limited clearance, avoiding costly modifications. This directly improves ROI by reducing installation labor and downtime.

Applications & Use Cases for the 21000-16-10-20-083-03-02

This housing assembly is ideal for monitoring rotating machinery such as turbines, compressors, and pumps in oil and gas, power generation, and petrochemical plants. Its CSA explosion-proof rating makes it suitable for Class 1 Division 1 and 2 hazardous areas. By providing early warning of shaft vibration, it helps prevent catastrophic failures and unplanned outages. Consequently, maintenance teams can schedule repairs during planned shutdowns, cutting emergency repair costs by up to 30%.

Installation & Setup Guide

Mount the 21000-16-10-20-083-03-02 using the 3/4-14 NPT thread into a standard port. 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 standoff adapter provides an adjustment range of 13 mm (±0.5 in). Use the included cable seal grip with the appropriate grommet for your cable diameter (1/8 to 3/8 inches). Always follow the manufacturer's manual for wiring and safety precautions.

Maintenance & Reliability Tips

Regularly inspect the housing for signs of corrosion or mechanical damage, especially in harsh environments. Verify that the probe cable is securely connected and free from kinks. The aluminum and stainless steel construction offers long-term durability, reducing replacement frequency. Periodic cleaning with a dry cloth is sufficient; avoid solvents that may damage seals. By adhering to a simple inspection schedule, you maximize uptime and minimize lifecycle costs.

Compatibility & Integration

The 21000-16-10-20-083-03-02 is fully compliant with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings. It integrates seamlessly with Bently Nevada monitoring systems and third-party vibration analyzers. The CSA Type 4 enclosure ensures reliable operation in wet or dusty conditions. For intrinsically safe applications, pair with hazardous area approved proximity probes.

FAQs about the 21000-16-10-20-083-03-02

Q: What is the probe penetration length of the 21000-16-10-20-083-03-02?

A: The probe penetration (Option D dimension) is 8.3 inches (083).

Q: What certifications does this housing assembly hold?

A: 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. It also complies with FCC Part 15 and RoHS Directive 2011/65/EU.

Q: What is the weight of the 21000-16-10-20-083-03-02?

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

Q: What mounting thread does this model use?

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

Q: What fittings are included with the 21000-16-10-20-083-03-02?

A: It includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable diameters of 1/8 to 3/8 inches.

Product Support & Availability

The 21000-16-10-20-083-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for pricing and lead times. We offer a 12-month factory warranty on new, original Bently Nevada parts.