21000-34-10-20-062-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-10-20-062-04-02

When machinery reliability is critical, the 21000-34-10-20-062-04-02 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 features an aluminum body with a 304 stainless steel sleeve, ensuring durability in demanding environments. The assembly includes a dome cover, threaded ports, and a probe sleeve of optional length. With CSA Type 4 enclosure rating and API 670 compliance, it meets industry standards for safety and performance.

Key Features and Technical Specs

• Probe option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe cable length: 1.0 m (39 in) for flexible installation.
• Standoff adapter: 0.2 in for precise positioning.
• Probe penetration: 6.2 in for deep mounting.
• Fitting option: One 3/4-14 NPT plug only for conduit connection.
• Mounting thread: 3/4-14 NPT for secure attachment.
• Maximum (C) + (D) dimension with visible probe: 17.0 in (43.18 cm).
• Maximum (C) + (D) dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A standout feature is the 8 mm probe with connector protector, which simplifies maintenance and reduces downtime. This design allows quick probe replacement without disturbing the housing, a key advantage for continuous operations.

Applications and Use Cases

In rotating machinery such as turbines, compressors, and pumps, the 21000-34-10-20-062-04-02 delivers accurate vibration and position measurements. Its explosion-proof rating makes it suitable for oil and gas, petrochemical, and power generation facilities. For example, in a refinery, this housing assembly withstands harsh conditions while providing reliable data for predictive maintenance. Additionally, its CSA Type 4 enclosure protects against dust and water ingress, ensuring long-term performance.

Installation and Setup

Mounting the 21000-34-10-20-062-04-02 requires a 3/4-14 NPT threaded hole. First, ensure the standoff adapter is set to 0.2 in for correct probe gap. Then, tighten the fitting option (one 3/4-14 NPT plug) to secure the conduit. For hazardous areas, verify that the housing is properly grounded per local codes. The probe cable length of 1.0 m offers flexibility for routing to monitoring systems. Always follow Bently Nevada's installation manual for torque specifications and wiring details.

Maintenance and Reliability

Regular inspection of the 21000-34-10-20-062-04-02 extends its service life. Check O-rings and thread seals for wear annually. Clean the dome cover and ports with a soft cloth to prevent debris buildup. The aluminum and stainless steel construction resists corrosion, reducing replacement frequency. From a cost-benefit perspective, this reliability minimizes unplanned downtime and maintenance costs, offering long-term value for industrial operations.

Compatibility and Integration

The 21000-34-10-20-062-04-02 integrates with Bently Nevada monitoring systems and third-party vibration analyzers. Its 8 mm probe works with standard proximity probe drivers. The 3/4-14 NPT mounting thread matches common conduit fittings. For hazardous area approvals, select the appropriate probe option (34) with connector protector. This compatibility simplifies retrofitting in existing installations.

Frequently Asked Questions

Q: What is the probe cable length of the 21000-34-10-20-062-04-02?

A: The probe cable length is 1.0 m (39 in).

Q: What mounting thread does this housing use?

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

Q: Is the 21000-34-10-20-062-04-02 suitable for hazardous areas?

A: Yes, it is available with selectable hazardous area approvals and CSA Type 4 explosion-proof rating.

Q: What is the weight of this housing assembly?

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

Q: What probe option is included with this part number?

A: It includes a 3300 XL 8 mm probe with connector protector.

Product Support and Availability

The 21000-34-10-20-062-04-02 is in stock and ready to ship from Petro Auto Tech. As a trusted supplier of industrial automation parts, we offer new and original factory-packed units with a 12-month warranty. Contact our team for technical support or ordering assistance.