21000-34-05-20-030-04-02 | Bently Nevada 0.5m Cable Proximity Probe Housing

What Is the 21000-34-05-20-030-04-02?

When machinery vibration monitoring demands robust and accurate sensing, the 21000-34-05-20-030-04-02 from Bently Nevada provides a reliable solution. This proximity probe housing assembly is designed for industrial environments where precise rotor displacement measurement is critical. Part of the 21000 series, it integrates a 3300 XL 8 mm probe with connector protector, making it suitable for hazardous area approvals. The assembly includes an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh conditions. For maintenance engineers, this unit simplifies installation and reduces downtime.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Probe Cable Length: 0.5 m (20 in).
• Standoff Adapter: 2.0 in.
• Probe Penetration: 3.0 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: 13.5 in (34.3 cm).

The unique 0.5 m cable length allows for compact installations in tight spaces, reducing the risk of cable damage. This spec directly impacts reliability by minimizing strain on connections.

Installation & Setup

To install the 21000-34-05-20-030-04-02, first verify the mounting thread is 3/4-14 NPT. Secure the housing using the provided standoff adapter. Ensure the probe sleeve penetrates 3.0 in as specified. Use the included 3/4-14 NPT plug for unused ports. For hazardous areas, confirm the housing version matches the required approval. Always follow Bently Nevada's installation manual for torque values and alignment.

Maintenance & Reliability

Regular inspection of the 21000-34-05-20-030-04-02 is straightforward. Check the dome cover and O-rings for wear annually. Verify the probe cable is not kinked or stressed. The aluminum body and stainless steel sleeve resist corrosion, extending service life. For maximum uptime, replace seals during routine maintenance. This proactive approach reduces unexpected failures and lowers total cost of ownership.

Applications & Use Cases

This housing assembly excels in turbine, compressor, and pump monitoring. In a typical scenario, a maintenance team installs the 21000-34-05-20-030-04-02 on a critical pump to detect shaft vibration. The 0.5 m cable fits within confined spaces, while the 8 mm probe provides accurate readings. For hazardous areas, the selectable approvals ensure compliance. This angle highlights how the assembly prevents unplanned downtime.

Compatibility & Integration

The 21000-34-05-20-030-04-02 integrates with Bently Nevada monitoring systems and third-party data acquisition units. The 3/4-14 NPT mounting thread matches standard conduit fittings. For API 670 compliance, the housing is fully compatible. No special adapters are needed for most industrial setups. Refer to the official datasheet for full system compatibility.

FAQ about 21000-34-05-20-030-04-02

Q: What is the probe cable length for the 21000-34-05-20-030-04-02?

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

Q: What mounting thread does this housing use?

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

Q: Is the 21000-34-05-20-030-04-02 suitable for hazardous areas?

A: Yes, it supports selectable hazardous area approvals with the 3300 XL 8 mm probe.

Q: What is the weight of this assembly?

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

Q: What material is the housing made of?

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

Product Support & Availability

The 21000-34-05-20-030-04-02 is in stock and ready to ship. Petro Auto Tech offers this new and original factory-packed unit with a 12-month warranty. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.