21000-34-05-30-039-03-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

Introduction to the 21000-34-05-30-039-03-02

When machinery reliability is critical, the 21000-34-05-30-039-03-02 from Bently Nevada provides a robust solution for proximity probe housing. This assembly includes an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh environments. With a 0.5 meter probe cable length and a 3.0 inch standoff adapter, it offers precise mounting flexibility. The housing supports a 3300 XL 8 mm probe with connector protector, making it suitable for selectable hazardous area approvals.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8 mm probe with connector protector for hazardous area approvals.
• Cable Length: 0.5 meters (20 inches) for flexible installation.
• Standoff Adapter: 3.0 inches for proper probe positioning.
• Probe Penetration: 3.9 inches into the housing.
• Mounting Thread: 3/4-14 NPT for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for corrosion resistance.
• Weight: 1.1 kg (2.4 lb) typical without fittings.
• Maximum (C)+(D) Dimension: 13.5 inches (34.3 cm) with visible probe P/N and S/N not visible.

A standout feature is the 0.5 meter cable length, which simplifies routing in tight spaces while maintaining signal integrity. This spec directly impacts installation ease and system reliability.

Applications and Use Cases

In industrial settings, the 21000-34-05-30-039-03-02 excels in vibration monitoring for rotating equipment such as turbines, compressors, and pumps. Its CSA Type 4 enclosure rating makes it ideal for outdoor or washdown environments. Additionally, it fully complies with the American Petroleum Institute's API 670 Standard for externally mounted proximity probe housings, ensuring industry-standard performance.

Installation and Setup

Mounting the housing requires a 3/4-14 NPT thread, which must be ordered if the standoff adapter length option is not -00. The assembly 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 cable sizes from 1/8 to 3/8 inches. Ensure the probe cable length of 0.5 meters is accounted for during routing to avoid stress on connections.

Maintenance and Reliability

Regular inspection of the O-rings and thread seal is recommended to maintain the housing's explosion-proof rating. The aluminum and stainless steel construction resists corrosion, extending service life. For cost-effective operation, periodic checks of the cable seal grip ensure environmental integrity, reducing unplanned downtime.

Compatibility and Integration

The 21000-34-05-30-039-03-02 integrates seamlessly with Bently Nevada monitoring systems that accept 3300 XL 8 mm probes. Its CSA Type 4 enclosure and explosion-proof rating (on CA versions with specific options) allow use in hazardous areas. The assembly is fully compliant with API 670, ensuring compatibility with standard mounting configurations.

Frequently Asked Questions

Q: What is the cable length of the 21000-34-05-30-039-03-02?

A: The probe cable length is 0.5 meters (20 inches).

Q: What mounting thread does this housing use?

A: It uses a 3/4-14 NPT mounting thread, which must be ordered if the standoff adapter length option is not -00.

Q: Is this housing explosion-proof?

A: Only CA versions of the housing are rated as explosion-proof by CSA when ordered with specific options (E:00, E:01, E:02, or E:04).

Q: What materials are used in construction?

A: The body is aluminum with a 304 stainless steel sleeve.

Q: What is the maximum dimension (C)+(D)?

A: The maximum (C)+(D) dimension is 13.5 inches (34.3 cm) with the probe P/N and S/N not visible.

Product Support and Availability

The 21000-34-05-30-039-03-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for ordering assistance or technical inquiries. We provide new and original factory-packed units with a 12-month warranty.