21000-34-05-00-095-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing Assembly

Introduction to the 21000-34-05-00-095-04-02

When industrial environments demand precise vibration monitoring in hazardous areas, the 21000-34-05-00-095-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for externally mounted probes that require CSA explosion-proof ratings. With a 0.5 m probe cable and 9.5 in penetration, it fits applications where space and safety are critical.

Over the past decade, machinery protection standards have evolved to require higher reliability and easier installation. The 21000-34-05-00-095-04-02 meets these demands with its aluminum body and 304 stainless steel sleeve, ensuring durability in harsh conditions. Its design complies with API 670, making it a trusted choice for rotating equipment monitoring.

Key Features and Technical Specifications

The 21000-34-05-00-095-04-02 includes a 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals, and a 0.5 m cable length. Key specs from the data include:

• Probe option: 3300 XL 8 mm with connector protector
• Cable length: 0.5 m (20 in)
• Probe penetration: 9.5 in
• Fitting: One 3/4-14 NPT plug
• Mounting thread: 3/4-14 NPT
• Material: Aluminum body with 304 stainless steel sleeve
• Maximum (C) + (D) dimension: 13.5 in (34.3 cm)
• Weight: 1.1 kg (2.4 lb) typical, without fittings

One distinctive spec is the 9.5 in probe penetration, which allows deep insertion into bearing housings or casings for accurate proximity measurements. This feature directly improves vibration data quality in large rotating machinery.

Applications and Use Cases

Industries such as oil and gas, power generation, and petrochemical processing rely on the 21000-34-05-00-095-04-02 for continuous vibration monitoring. Its CSA explosion-proof rating makes it suitable for Class I, Division 1 hazardous locations. For example, in a refinery, this housing assembly can monitor compressor shaft vibration, helping operators detect early signs of imbalance or misalignment. Additionally, its API 670 compliance ensures compatibility with standard proximity probe systems used in turbomachinery.

Installation and Setup

Installing the 21000-34-05-00-095-04-02 requires proper mounting using the 3/4-14 NPT thread. The assembly includes a dome cover, threaded ports for conduit connections, and a probe sleeve of optional length. Ensure the probe cable is routed without sharp bends to maintain signal integrity. For explosion-proof installations, use only CA versions of the housing with the specified E:00, E:01, E:02, or E:04 options. Always follow Bently Nevada's mounting guidelines for optimal performance.

Maintenance and Reliability

Routine inspection of the 21000-34-05-00-095-04-02 helps maintain reliable operation. Check the O-rings and thread seal for wear during scheduled maintenance intervals. The aluminum body and stainless steel sleeve resist corrosion in most industrial environments. For cost-benefit analysis, investing in this housing reduces downtime by providing stable, long-term vibration monitoring, which lowers overall maintenance costs.

Compatibility and Integration

The 21000-34-05-00-095-04-02 integrates with Bently Nevada monitoring systems that accept 8 mm proximity probes. It is compatible with standard 3300 XL series probes and can be used with both intrinsically safe and explosion-proof installations. The housing supports optional conduit fittings and standoff adapters for flexible mounting configurations.

Frequently Asked Questions

Q: What is the probe cable length of the 21000-34-05-00-095-04-02?

A: The probe cable length is 0.5 m (20 in), as specified by the suffix code 05.

Q: Is the 21000-34-05-00-095-04-02 explosion-proof?

A: Only CA versions of the housing are rated explosion-proof by CSA when ordered with E:00, E:01, E:02, or E:04 options. The standard version may not be explosion-proof.

Q: What is the probe penetration of this model?

A: The probe penetration is 9.5 in, indicated by the suffix code 095.

Q: What material is the housing made of?

A: The housing has an aluminum body with a 304 stainless steel sleeve.

Q: What is the weight of the 21000-34-05-00-095-04-02?

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

Product Support and Availability

The 21000-34-05-00-095-04-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. For current lifecycle status and availability, please contact Petro Auto Tech before ordering.