The Bently Nevada 21000-16-10-00-256-04-02 is a high-performance proximity probe housing assembly designed to accommodate proximity transducers in demanding industrial environments. Manufactured by Bently Nevada, a globally recognized leader in machinery protection and condition monitoring, this model provides a robust and secure solution for mounting probes externally without the need for internal access or machine disassembly.

This housing assembly is engineered with a rugged aluminum body and a 304 stainless steel sleeve, ensuring long-term durability and corrosion resistance even in harsh and hazardous industrial applications. Its design is optimized for easy installation, maintenance accessibility, and compatibility with standard Bently Nevada probes and cables.

The 21000 series assemblies are API 670 compliant, CSA certified, and purpose-built for environments where explosive atmospheres or vibration-sensitive operations are present. With a probe penetration of 25.6 inches, this model offers extended reach capabilities, ideal for deep internal component monitoring.

Technical Specifications

Applications

The 21000-16-10-00-256-04-02 proximity probe housing assembly is widely utilized in critical industrial environments, including:

• Power Generation: Installed in steam and gas turbines for continuous shaft vibration monitoring.

• Oil & Gas Refineries: Used in compressors and large rotating equipment to monitor shaft position and clearances.

• Petrochemical Plants: Offers vibration monitoring in hazardous locations with explosive atmosphere risks.

• Pulp and Paper Mills: Supports predictive maintenance on large drying drums and rotating cylinders.

• Manufacturing & Industrial Automation: Facilitates equipment monitoring to reduce downtime and increase reliability.

Advantages

• Durable Build Quality: Constructed from aluminum and 304 stainless steel, the housing offers excellent resistance to harsh environmental conditions and mechanical wear.

• Easy Maintenance Access: External probe access design eliminates the need to dismantle machinery for maintenance, saving valuable downtime.

• Extended Reach: With a penetration depth of 25.6 inches, this model provides access to hard-to-reach internal components.

• Hazardous Area Approved: Certified for use in explosive or high-risk industrial zones.

• Modular and Configurable: Compatible with a wide range of Bently Nevada probes and transducer systems, offering flexible integration.

• Global Standard Compliance: Meets the rigorous standards of API 670 for rotating machinery protection systems.

Frequently Asked Questions (FAQ)

1. What is the main function of this housing assembly?

   It is designed to house and protect proximity probes externally on industrial machinery, allowing vibration and position monitoring without disassembling the equipment.

2. Which probes are compatible with this model?

   It is specifically compatible with Bently Nevada’s 3300 XL 8 mm probes with connectors.

3. What is the penetration length of this housing?

   The probe penetration length is 25.6 inches (650 mm), allowing deep access into machinery casings.

4. Is it certified for hazardous environments?

   Yes, it is CSA approved and suitable for hazardous, potentially explosive industrial environments.

5. Does this model include a standoff adapter?

   No, this model has no standoff adapter configured (designated as “00”).

6. What is the fitting configuration?

   It includes one 3/4-14 NPT plug only (option 04) for simplified installation.

7. Can it withstand extreme temperatures?

   Yes, it operates effectively within a range of -51°C to +177°C.

8. What materials are used in its construction?

   The body is made from aluminum, while the probe sleeve is stainless steel (304 grade).

9. How much does it weigh?

   1.1 kg (2.43 lbs), making it lightweight yet robust.

10. What makes this housing assembly API 670 compliant?

    It meets requirements for installation, probe protection, vibration tolerance, and accessibility as outlined in the API 670 machinery protection standard.