21000-28-10-00-030-04-02 | Bently Nevada 8 mm Proximity Probe Housing Assembly

Introduction to the 21000-28-10-00-030-04-02

Industrial vibration monitoring has evolved from simple mechanical gauges to sophisticated electronic systems that protect critical rotating machinery. The 21000-28-10-00-030-04-02 from Bently Nevada represents this evolution, offering a robust housing assembly for proximity probes in demanding applications. This aluminum body with a 304 stainless steel sleeve provides durability and corrosion resistance, making it suitable for harsh environments.

Key Features and Technical Specifications

• Probe Type: 3300 XL 8 mm proximity probe with selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Probe Penetration: 3 in (Option D Dimension).
• Fittings: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT (required when standoff adapter is not used).
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Certifications: CSA approved, rated explosion proof for hazardous areas; CSA Type 4 enclosure; compliant with API 670 Standard.

The 21000-28-10-00-030-04-02 is part of the 21000 series of proximity probe housing assemblies. It includes a dome cover, threaded ports for conduit connections, a probe sleeve, O-rings, a reverse mount proximity probe, a thread seal, optional conduit fittings, and an optional standoff adapter. The adjustable probe penetration range is 13 mm (±0.5 in).

Applications and Use Cases

Engineers in the oil and gas, power generation, and petrochemical industries rely on the 21000-28-10-00-030-04-02 for continuous vibration monitoring of turbines, compressors, and pumps. Its explosion-proof rating makes it ideal for hazardous areas where safety is paramount. The housing assembly also meets the API 670 standard, ensuring compatibility with industry best practices for externally mounted proximity probes.

Installation and Setup

When installing the 21000-28-10-00-030-04-02, ensure the probe penetration length (C plus D) does not exceed 300 mm (12 in) without adding sleeve support near the probe to prevent resonance. For penetration lengths between 1.0 and 2.0 inches, counter boring the machine case may reduce side view or rear view effects. The mounting thread is 3/4-14 NPT, and the fittings option includes one 3/4-14 NPT plug. Always follow the manufacturer's manual for proper wiring and torque specifications.

Maintenance and Reliability

Routine inspection of the 21000-28-10-00-030-04-02 helps ensure long-term reliability. Check O-rings and seals periodically for wear, and verify that the probe cable is not damaged. The aluminum and stainless steel construction resists corrosion, but regular cleaning with a soft cloth is recommended. For safety-rated equipment, always follow the manufacturer's safety manual for inspection intervals and procedures.

Compatibility and Integration

The 21000-28-10-00-030-04-02 is designed for use with Bently Nevada monitoring systems and compatible proximity probes. It supports both intrinsically safe and non-intrinsically safe applications, depending on the probe selected. The housing assembly can be ordered with hazardous area approved probes for use in explosive environments.

FAQs about the 21000-28-10-00-030-04-02

Q: What is the probe cable length for this model?

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

Q: What certifications does the 21000-28-10-00-030-04-02 hold?

A: It has CSA approvals, is rated explosion proof for hazardous areas, and is CSA Type 4 enclosure compliant with API 670.

Q: What is the weight of the housing assembly?

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

Q: Can I use this housing with a standoff adapter?

A: Yes, an optional standoff adapter is available. If not used, the mounting thread must be 3/4-14 NPT.

Q: What is the probe penetration range?

A: The probe penetration option D has an adjustment range of 13 mm (±0.5 in).

Product Support and Availability

The 21000-28-10-00-030-04-02 is available as a new and original factory-packed unit from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship, this Bently Nevada housing assembly ensures reliable vibration monitoring for your critical machinery.