21000-28-10-20-030-04-02 | Bently Nevada 1.0 m Cable Proximity Probe Housing

What Is the 21000-28-10-20-030-04-02?

When machinery reliability demands precise vibration monitoring, the 21000-28-10-20-030-04-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for hazardous area applications. It combines an aluminum body with a 304 stainless steel sleeve, ensuring durability in harsh environments. With a typical weight of 1.1 kg (2.4 lb), it offers a balance of strength and ease of installation. This model is engineered to meet API 670 standards for externally mounted probe housings.

Key Features & Technical Specs

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Standoff Adapter: 2 in length for precise positioning.
• Probe Penetration: 3 in for accurate measurement.
• Fitting Option: One 3/4-14 NPT plug only.
• Mounting Thread: 3/4-14 NPT, required when standoff adapter length is not 00.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm) with visible probe.

Each spec directly contributes to cost efficiency: the 1.0 m cable reduces material waste, while the 3 in penetration ensures accurate readings, minimizing false alarms and downtime.

Applications & Use Cases

In rotating machinery like turbines and compressors, the 21000-28-10-20-030-04-02 excels at monitoring shaft vibration. Its CSA Type 4 enclosure rating makes it suitable for outdoor and washdown environments. For example, in a refinery, this housing assembly withstands corrosive atmospheres while delivering reliable data. Moreover, its API 670 compliance ensures integration with existing vibration monitoring systems, reducing retrofit costs.

Installation Guide

Mount the housing using the 3/4-14 NPT thread for a secure fit. Ensure the probe cable length of 1.0 m reaches the monitoring system without excess. The standoff adapter of 2 in positions the probe correctly. Use the supplied 3/4-14 NPT plug for unused ports. Always follow Bently Nevada’s manual for torque specifications to avoid damage.

Routine Care & Reliability

Inspect the O-rings and thread seal annually for wear. The aluminum body resists corrosion, but check for pitting in aggressive environments. The 304 stainless steel sleeve maintains integrity under thermal cycling. Regular inspection extends service life, reducing replacement costs by up to 30% over five years.

FAQs about the 21000-28-10-20-030-04-02

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

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

Q: What mounting thread does the 21000-28-10-20-030-04-02 use?

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

Q: Is this housing assembly suitable for hazardous areas?

A: Yes, it is CSA certified for explosion-proof applications in Class I Divisions 1 and 2 Groups C and D.

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

A: The maximum dimension is 32.9 in (83.5 cm) with the visible probe.

Q: What material is the body made of?

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

Product Support & Availability

The 21000-28-10-20-030-04-02 is in stock and ready to ship from Petro Auto Tech. Contact our team for lifecycle status and availability before ordering.