21000-34-05-30-039-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing Assembly

Introduction to the 21000-34-05-30-039-04-02

When rotating machinery demands precise vibration monitoring, the 21000-34-05-30-039-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the trusted 21000 series, engineered for hazardous area applications. With a 0.5m probe cable and 3.0in standoff adapter, it ensures accurate measurement in demanding industrial environments.

Over the past decades, industrial automation has evolved from basic monitoring to predictive maintenance. The 21000-34-05-30-039-04-02 supports this shift by offering a reliable housing for reverse mount proximity probes. Its aluminum body with a 304 stainless steel sleeve withstands harsh conditions, making it a cornerstone for machinery protection systems.

Key Features and Technical Specifications

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in) for flexible installation.
• Standoff Adapter: 3.0 in to position the probe accurately.
• Probe Penetration: 3.9 in for effective measurement depth.
• Fitting Option: One 3/4-14 NPT plug for conduit connection.
• Mounting Thread: 3/4-14 NPT for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for durability.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum Dimension (C+D): 13.5 in (34.3 cm) with visible probe P/N and S/N not visible.

One distinctive spec is the 0.5m cable length, which reduces signal loss in tight installations. This feature enhances measurement accuracy, directly impacting machinery reliability.

Applications and Use Cases

In industries like oil and gas, power generation, and petrochemicals, the 21000-34-05-30-039-04-02 excels at monitoring shaft vibration and position. For example, in a refinery, this housing assembly helps detect early bearing wear, preventing costly unplanned downtime. Its CSA Type 4 enclosure rating ensures performance in wet or dusty environments. Additionally, it complies with API 670 standards for externally mounted proximity probes, making it a preferred choice for critical rotating equipment.

Installation and Setup

Mounting the 21000-34-05-30-039-04-02 requires attention to the 3/4-14 NPT thread for a secure fit. First, verify the standoff adapter length matches your gap requirements. Then, connect the probe cable carefully to avoid damage. Use the provided 3/4-14 NPT plug for unused ports to maintain enclosure integrity. Always follow Bently Nevada's installation manual for torque specifications and wiring details.

Maintenance and Reliability

Routine inspection of the 21000-34-05-30-039-04-02 ensures long-term performance. Check the O-rings and thread seal annually for wear. The aluminum and stainless steel construction resists corrosion, but periodic cleaning with a dry cloth is recommended. By maintaining this assembly, you extend its service life and reduce replacement costs, aligning with a cost-benefit approach to asset management.

Compatibility and Integration

The 21000-34-05-30-039-04-02 integrates seamlessly with Bently Nevada monitoring systems. It accepts 3300 XL 8 mm proximity probes with hazardous area approvals. For intrinsically safe applications, pair it with approved probes and barriers. The housing supports both CA and non-CA versions, with CSA explosion-proof ratings available on specific options. Refer to the datasheet for full compatibility details.

FAQs about the 21000-34-05-30-039-04-02

Q: What is the cable length of the 21000-34-05-30-039-04-02?

A: The probe cable length is 0.5 m (20 in).

Q: Is this housing suitable for hazardous areas?

A: Yes, it supports selectable hazardous area approvals with the 3300 XL probe option.

Q: What mounting thread does it use?

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

Q: What is the weight of the 21000-34-05-30-039-04-02?

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

Q: What materials are used in the housing?

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

Product Support and Availability

The 21000-34-05-30-039-04-02 is available in new and original factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Contact Petro Auto Tech to verify lifecycle status and place your order for fast delivery.