21000-34-10-00-066-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-10-00-066-03-02

When industrial environments demand reliable vibration monitoring in hazardous areas, the 21000-34-10-00-066-03-02 from Bently Nevada provides a robust solution. Over the past decades, proximity probe housings have evolved from simple enclosures to certified explosion-proof assemblies that meet stringent safety standards. This model, part of the 21000 series, combines an aluminum body with a 304 stainless steel sleeve for durability in harsh conditions.

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).
• Probe Penetration: 6.6 in.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm).
• Maximum (C) + (D) with visible probe P/N and S/N: 17.0 in (43.18 cm).
• Fitting Option: Includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for multiple cable sizes.
• Certification: CSA Type 4 enclosure, explosion proof for hazardous areas, compliant with API 670 Standard.

The 8 mm probe size is a distinctive spec that enables precise measurement in tight spaces, making it ideal for machinery with limited access.

Industry Applications and Use Cases

In the oil and gas sector, the 21000-34-10-00-066-03-02 is commonly used for vibration monitoring on compressors and turbines. For example, in a refinery, this housing assembly can be mounted externally on a critical pump to detect shaft displacement. Additionally, its CSA explosion-proof rating allows safe operation in Class I, Division 1 hazardous locations. The API 670 compliance further ensures compatibility with industry-standard installation practices.

Installation and Setup Guidance

Mount the housing using the 3/4-14 NPT thread option, which is required when no standoff adapter is used. Ensure the probe cable length of 1.0 m is sufficient for the routing path. The fitting kit includes a reducer and cable seal grip to accommodate conduit sizes from 1/8 to 3/8 inches. Always follow the manufacturer's manual for proper torque and alignment.

Maintenance and Reliability

Regular inspection of the O-rings and thread seal is recommended to maintain the explosion-proof integrity. The 304 stainless steel sleeve resists corrosion, extending service life in humid or chemical environments. By preventing false readings due to housing degradation, this assembly reduces unplanned downtime and maintenance costs over time.

Compatibility and Integration

The 21000 housing is designed for use with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It integrates seamlessly with Bently Nevada rack-based monitoring platforms. For specific system compatibility, refer to the official datasheet or contact Petro Auto Tech.

Troubleshooting and Common Issues

If the probe cable is damaged during installation, verify the cable length and routing. Loose fittings can cause false readings; tighten the NPT connections per spec. Should the housing fail to seal, inspect the O-rings for wear. For persistent issues, consult Bently Nevada documentation or Petro Auto Tech support.

FAQ about 21000-34-10-00-066-03-02

What is the probe cable length for this model?

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

What is the mounting thread option?

The mounting thread option is 3/4-14 NPT.

Is this housing suitable for hazardous areas?

Yes, it is CSA rated explosion proof for hazardous areas and certified as a Type 4 enclosure.

What materials are used in the housing?

The body is aluminum with a 304 stainless steel sleeve.

What is the probe penetration depth?

The probe penetration is 6.6 in.

Product Support and Availability

The 21000-34-10-00-066-03-02 is in stock and ready to ship from Petro Auto Tech. As a trusted supplier of industrial automation parts, Petro Auto Tech offers this Bently Nevada assembly with a 12-month factory warranty. Contact Petro Auto Tech for lifecycle status and ordering details.