21000-16-05-00-115-03-02 | Bently Nevada 0.5m Cable Proximity Probe Housing Assembly

Introduction to the 21000-16-05-00-115-03-02 Proximity Probe Housing Assembly

When harsh industrial environments demand precise vibration monitoring, the 21000-16-05-00-115-03-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly combines an aluminum body with a 304 stainless steel sleeve for durability. It supports a 3300 XL 8 mm probe and includes a 0.5 m (20 in) probe cable. Engineers trust this model for its explosion-proof rating and CSA Type 4 enclosure certification.

Key Features and Technical Specifications of the 21000-16-05-00-115-03-02

• Probe option: 3300 XL 8 mm probe with connector.
• Probe cable length: 0.5 m (20 in).
• Standoff adapter: None (00 option).
• Probe penetration: 11.5 in (115 option).
• Fitting option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with grommets for cable sizes 1/8 to 3/8 inches.
• Mounting thread: 3/4-14 NPT (02 option).
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) dimension: 13.5 in (34.3 mm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Approvals: CSA explosion proof for hazardous areas; CSA Type 4 enclosure; compliant with API 670 Standard.

One standout spec is the 11.5 in probe penetration, which allows deep insertion into bearing housings for accurate vibration readings. This feature directly improves machine protection in critical rotating equipment.

Applications and Use Cases for the 21000-16-05-00-115-03-02

This housing assembly excels in oil refineries, chemical plants, and power generation facilities. It mounts externally on compressors, turbines, and pumps to monitor shaft vibration. Because it is CSA certified explosion proof, it suits Class I, Division 1 hazardous locations. Moreover, its API 670 compliance ensures compatibility with standard proximity probe systems used across the industry.

Installation and Setup Guidance

Mount the 21000-16-05-00-115-03-02 using the 3/4-14 NPT thread option. Attach the supplied fittings: the 3/4-14 NPT plug, reducer, and cable seal grip. Ensure the cable seal grip matches the cable diameter (1/8 to 3/8 inches). Insert the probe sleeve to the required penetration depth of 11.5 in. Tighten all connections to prevent leakage in pressurized environments.

Maintenance and Reliability Tips

Inspect the housing assembly periodically for signs of corrosion or damage, especially in corrosive atmospheres. Verify that the O-rings and thread seal remain intact to maintain the explosion-proof rating. The aluminum body with stainless steel sleeve resists rust, extending service life. Regular checks help avoid unplanned downtime and reduce long-term replacement costs.

Comparison with Other Proximity Probe Housings

Compared to standard stainless steel housings, the 21000-16-05-00-115-03-02 offers a lighter aluminum body while retaining a 304 stainless steel sleeve for strength. Unlike basic models without CSA approval, this unit provides certified explosion-proof protection. The included fitting kit (plug, reducer, and cable grip) simplifies installation, whereas some competitors require separate purchases.

Frequently Asked Questions about the 21000-16-05-00-115-03-02

Q: What probe is compatible with the 21000-16-05-00-115-03-02?

A: It accepts a 3300 XL 8 mm proximity probe with connector, as specified by the 16 suffix code.

Q: Is this housing assembly suitable for hazardous areas?

A: Yes, it has CSA explosion-proof approval and is rated CSA Type 4 enclosure for hazardous locations.

Q: What is the maximum (C) + (D) dimension?

A: The maximum (C) + (D) dimension is 13.5 in (34.3 mm).

Q: What mounting thread does it use?

A: It uses a 3/4-14 NPT thread (option -02) when no standoff adapter is selected.

Q: What is the weight of the assembly?

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

Product Support and Availability

The 21000-16-05-00-115-03-02 is available in new, original factory packaging from Petro Auto Tech. Each unit carries a 12-month factory warranty. Contact Petro Auto Tech for current stock and ordering details.