21000-16-10-00-066-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-16-10-00-066-03-02

When machine vibration monitoring demands robust and accurate proximity sensing, the 21000-16-10-00-066-03-02 from Bently Nevada delivers a proven solution. This proximity probe housing assembly integrates a 3300 XL 8 mm probe with a 1.0 meter cable, engineered for industrial environments where reliability is non-negotiable. As part of the 21000 series, it provides a complete housing solution that includes a dome cover, threaded conduit ports, and a stainless steel sleeve for durability.

Key Features & Technical Specifications

• Probe option: 3300 XL 8 mm probe with connector
• Probe cable length: 1.0 m (39 in)
• Probe penetration (Option D): 6.6 in (066)
• Mounting thread: 3/4-14 NPT
• Material: Aluminum body with 304 stainless steel sleeve
• Weight: 1.1 kg (2.4 lb) typical, without fittings
• Fittings include: one 3/4-14 NPT plug, one reducer, and cable seal grip with grommets

One distinctive feature of this assembly is the adjustable probe penetration range of 13 mm (±0.5 in), allowing fine-tuning during installation to optimize measurement accuracy. This capability is critical for applications requiring precise gap settings between the probe tip and the target surface.

Applications & Use Cases

Engineers select the 21000-16-10-00-066-03-02 for critical rotating machinery monitoring, including turbines, compressors, and pumps. Its CSA Type 4 enclosure rating and explosion-proof certification for hazardous areas make it suitable for oil and gas, petrochemical, and power generation environments. The housing meets API 670 standards for externally mounted proximity probes, ensuring compliance with industry best practices.

Installation & Setup Guidance

When installing this housing assembly, ensure the probe penetration length (C plus D) does not exceed 300 mm (12 in) without adding sleeve support to prevent resonance. For penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may be necessary to reduce side or rear view effects. The mounting thread defaults to 3/4-14 NPT unless a standoff adapter is selected. Always follow Bently Nevada's installation manual for torque specifications and wiring procedures.

Maintenance & Reliability

Routine inspection of the O-rings and cable seal grip helps maintain the enclosure's integrity in harsh environments. The aluminum body with stainless steel sleeve resists corrosion, extending service life in outdoor or wash-down areas. Periodic verification of the probe's electrical continuity and insulation resistance can prevent unexpected failures. By choosing this assembly, operators reduce downtime associated with probe replacement and recalibration.

Compatibility & Integration

The 21000-16-10-00-066-03-02 works seamlessly with Bently Nevada monitoring systems that accept 3300 XL 8 mm proximity probes. It is compatible with standard 3/4-14 NPT conduit fittings and can be integrated into existing vibration monitoring networks. The housing supports both hazardous area approved and standard probes, providing flexibility for diverse plant layouts.

FAQ about 21000-16-10-00-066-03-02

What is the probe cable length for this model?

The probe cable length is 1.0 m (39 in) as specified by the suffix code 10.

What mounting thread does the housing use?

The housing uses a 3/4-14 NPT mounting thread, which defaults to option 02 unless a standoff adapter is selected.

Is this housing assembly certified for hazardous areas?

Yes, the 21000 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.

What materials are used in the construction?

The body is aluminum, and the sleeve is 304 stainless steel, providing corrosion resistance and mechanical strength.

Can the probe penetration be adjusted during installation?

Yes, the probe penetration option D has an adjustment range of 13 mm (±0.5 in) for fine-tuning.

Product Support & Availability

The 21000-16-10-00-066-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for current lead times and bulk pricing. We provide factory-sealed new units with full manufacturer warranty.