21000-16-10-15-085-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Product Overview: 21000-16-10-15-085-03-02

When machinery vibration threatens uptime, the 21000-16-10-15-085-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for externally mounted probes in hazardous areas. It combines an aluminum body with a 304 stainless steel sleeve for durability in industrial environments.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 1.5 in (38 mm).
• Probe Penetration (D Dimension): 8.5 in.
• Mounting Thread: 3/4-14 NPT.
• Fittings: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and cable seal grip with grommets for cable sizes 1/8 to 3/8 inches.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Material: Aluminum body with 304 stainless steel sleeve.

A distinctive spec is the 1.5 in standoff adapter, which simplifies installation by providing consistent probe positioning for accurate readings.

Industry Applications

Maintenance engineers in oil and gas, power generation, and petrochemical plants rely on the 21000-16-10-15-085-03-02 for critical rotating machinery. It is fully compliant with API 670 Standard for externally mounted proximity probe housings. Consequently, it fits seamlessly into existing vibration monitoring systems. Moreover, its CSA Type 4 enclosure rating makes it suitable for harsh outdoor or washdown environments.

Installation & Setup

Mounting the 21000-16-10-15-085-03-02 involves straightforward steps. First, select the 3/4-14 NPT mounting thread option. For probe penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may reduce side view effects. If the combined probe length (C plus D) exceeds 300 mm (12 in), add sleeve support near the probe to prevent resonance. The adjustment range for penetration option D is 13 mm (± 0.5 in).

Maintenance & Reliability

Regular inspection of the 21000-16-10-15-085-03-02 ensures long-term reliability. Check O-rings and thread seals during routine shutdowns. The aluminum body resists corrosion, while the stainless steel sleeve handles mechanical stress. Because the housing is explosion-proof, always follow the manufacturer's safety manual for maintenance procedures. This proactive care reduces unplanned downtime and extends service life.

Compatibility & Integration

The 21000-16-10-15-085-03-02 works with Bently Nevada monitoring systems and third-party vibration analyzers. It accepts hazardous area approved proximity probes for intrinsically safe applications. The housing is certified as CSA Type 4, ensuring compatibility with North American hazardous area classifications: Class 1 Divisions 1 and 2 Groups C and D, and Class 2 Divisions 1 and 2 Groups E, F, and G. For best results, pair it with compatible Bently Nevada cables and connectors.

FAQs about 21000-16-10-15-085-03-02

Q: What is the probe cable length for this assembly?

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

Q: Is this housing suitable for hazardous areas?

A: Yes, the 21000 aluminum housing is CSA certified for explosion-proof applications in Class 1 Divisions 1 and 2 Groups C and D, and Class 2 Divisions 1 and 2 Groups E, F, and G.

Q: What mounting thread does the 21000-16-10-15-085-03-02 use?

A: It uses a 3/4-14 NPT mounting thread, which defaults to this option when the standoff adapter length is not 00.

Q: How do I prevent probe resonance with longer penetration lengths?

A: For combined probe lengths (C plus D) greater than 300 mm (12 in), add sleeve support near the probe to prevent resonance.

Q: What is the typical weight of this assembly?

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

Product Support & Availability

The 21000-16-10-15-085-03-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.