21000-34-10-20-095-04-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-10-20-095-04-02

When machinery reliability is critical, the 21000-34-10-20-095-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for harsh industrial environments. It features an aluminum body with a 304 stainless steel sleeve, ensuring durability and corrosion resistance. The assembly includes a dome cover, threaded conduit ports, a probe sleeve, O-rings, a reverse mount proximity probe, and a thread seal. With a typical weight of 1.1 kg (2.4 lb), it is designed for easy installation in tight spaces.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 2.0 in.
• Probe Penetration: 9.5 in.
• Fitting Option: One 3/4-14 NPT plug.
• Mounting Thread: 3/4-14 NPT (required when standoff adapter is not -00).
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) with visible probe P/N and S/N.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

A standout spec is the 8 mm probe with connector protector, which allows selectable hazardous area approvals. This feature simplifies compliance in explosive environments, reducing installation complexity.

Applications and Use Cases

Engineers rely on the 21000-34-10-20-095-04-02 for vibration monitoring in rotating machinery like turbines, compressors, and pumps. Its CSA Type 4 enclosure rating makes it suitable for outdoor and washdown areas. Additionally, the housing meets API 670 standards for externally mounted proximity probes, ensuring compatibility with industry best practices. In comparison to standard probe housings, this model offers enhanced environmental protection and flexible mounting options.

Installation and Setup

Mount the housing using the 3/4-14 NPT thread for secure attachment. Ensure the standoff adapter is correctly positioned to achieve the desired probe gap. The assembly includes a thread seal to prevent leakage. For hazardous area installations, verify that the probe option (34) matches the required approval level. Always follow Bently Nevada guidelines for proper cable routing and conduit connections.

Maintenance and Reliability

Regularly inspect the O-rings and thread seal for wear to maintain enclosure integrity. The stainless steel sleeve resists corrosion, extending service life in harsh environments. By choosing the 21000-34-10-20-095-04-02, operators reduce downtime through reliable vibration data. This aligns with a cost-benefit strategy: fewer replacements and consistent monitoring lower total ownership costs.

Compatibility and Integration

The housing is compatible with Bently Nevada 3300 XL 8 mm proximity probes and associated monitoring systems. It works with standard conduit fittings and can be integrated into existing vibration monitoring networks. For intrinsically safe applications, pair with approved barriers as specified by the manufacturer.

Frequently Asked Questions

Q: What is the maximum cable length for the 21000-34-10-20-095-04-02?

A: The probe cable length is fixed at 1.0 m (39 in) as per the suffix code 10.

Q: Can this housing be used in explosion-proof applications?

A: Yes, when ordered with CA version and appropriate E:00, E:01, E:02, or E:04 options, it is CSA rated explosion-proof.

Q: What is the weight of the assembly without fittings?

A: The typical weight is 1.1 kg (2.4 lb).

Q: Is the 21000-34-10-20-095-04-02 compliant with API 670?

A: Yes, the housing is fully compliant with API 670 for externally mounted proximity probe housings.

Product Support and Availability

The 21000-34-10-20-095-04-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Contact Petro Auto Tech for lifecycle status and ordering details.