21000-16-10-00-124-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-16-10-00-124-03-02

When machinery protection demands robust external mounting, the 21000-16-10-00-124-03-02 from Bently Nevada delivers a proven solution. This proximity probe housing assembly is part of the 21000 series, designed for use with 3300 XL 8 mm probes. It combines an aluminum body with a 304 stainless steel sleeve for durability in industrial environments.

With a probe cable length of 1.0 m (39 in) and a probe penetration of 12.4 in, this model suits applications requiring precise clearance monitoring. The housing is rated explosion proof for hazardous areas and carries CSA Type 4 enclosure certification.

Key Features and Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector
• Cable Length: 1.0 m (39 in)
• Probe Penetration (D): 12.4 in
• Mounting Thread: 3/4-14 NPT
• Fittings Included: 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 sizes from 1/8 to 3/8 inches
• Material: 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
• Compliance: FCC Part 15, RoHS Directive 2011/65/EU

The unique 12.4 in probe penetration provides flexibility for installations where the probe must reach deep into the machine casing. This spec allows for precise gap setting and reliable vibration measurement.

Applications and Use Cases

The 21000-16-10-00-124-03-02 is ideal for externally mounted proximity probes in rotating machinery such as turbines, compressors, and pumps. Its CSA explosion-proof rating makes it suitable for hazardous environments like oil and gas facilities. Additionally, it complies with API 670 for externally mounted proximity probe housings, ensuring industry-standard performance.

For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may reduce side view or rear view effects. When the total probe penetration (C plus D) exceeds 300 mm (12 in), sleeve support near the probe is recommended to prevent resonance.

Installation and Setup

Mount the housing using the 3/4-14 NPT thread. The included fittings allow for flexible conduit connections. Ensure the cable seal grip grommet matches your cable diameter for a proper seal. The adjustment range for the probe penetration option D is 13 mm (± 0.5 in), providing fine-tuning capability during installation.

If a standoff adapter is not required, select the 00 suffix. The mounting thread defaults to 02 (3/4-14 NPT) when no standoff adapter is chosen.

Maintenance and Reliability

Regularly inspect the housing for signs of corrosion or damage, especially in harsh environments. The aluminum and stainless steel construction offers good resistance to corrosion. Verify that the O-rings and thread seal remain intact to maintain the explosion-proof rating. Periodic cleaning with a soft cloth and mild detergent is sufficient; avoid abrasive materials.

Compatibility and Integration

This housing assembly is designed for use with Bently Nevada 3300 XL 8 mm proximity probes. It integrates seamlessly with Bently Nevada monitoring systems. The CSA Type 4 enclosure ensures compatibility with intrinsically safe applications when paired with hazardous area approved probes.

Frequently Asked Questions

Q: What is the probe cable length for the 21000-16-10-00-124-03-02?

A: The probe cable length is 1.0 m (39 in), as indicated by the cable length suffix 10.

Q: What mounting thread does this model use?

A: The mounting thread is 3/4-14 NPT, specified by the suffix 02.

Q: Is the 21000-16-10-00-124-03-02 suitable 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 fittings are included with this housing assembly?

A: The package 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 sizes from 1/8 to 3/8 inches.

Q: What is the weight of the 21000-16-10-00-124-03-02?

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

Product Support and Availability

This Bently Nevada proximity probe housing assembly is in stock and ready to ship from Petro Auto Tech. Contact our team for ordering assistance or technical questions.