21000-28-00-00-030-04-02 | Bently Nevada 3 in Probe Penetration Proximity Probe Housing Assembly

Introduction to the Bently Nevada 21000-28-00-00-030-04-02 Proximity Probe Housing Assembly

When industrial rotating machinery demands precise vibration monitoring, the 21000-28-00-00-030-04-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for externally mounted probes in harsh environments. It features an aluminum body with a 304 stainless steel sleeve, ensuring durability and corrosion resistance. With a 3 in probe penetration and a 1.0 m cable length, this unit fits seamlessly into critical asset protection systems. The assembly includes a 3300 XL 8 mm probe with selectable hazardous area approvals, making it suitable for explosive atmospheres. Engineers rely on this model for accurate shaft displacement and vibration readings, reducing unplanned downtime.

Key Features and Technical Specifications of the 21000-28-00-00-030-04-02

• Probe Option: 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in) for flexible installation.
• Probe Penetration: 3 in (030) for deep insertion into machinery.
• Fitting Option: One 3/4-14 NPT plug only (04).
• Mounting Thread: 3/4-14 NPT (02) for secure attachment.
• Material: Aluminum body with 304 stainless steel sleeve for strength and corrosion resistance.
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Maximum Dimension (C + D): 17.0 in (43.18 cm) with visible probe, 32.9 in (83.5 cm) overall.
• Enclosure Rating: CSA Type 4, explosion-proof for hazardous areas.
• Compliance: RoHS Directive 2011/65/EU.

The 21000-28-00-00-030-04-02 stands out with its 3 in probe penetration, allowing deeper monitoring of shaft motion. This spec enhances measurement accuracy in large rotating equipment, such as turbines and compressors. The 3300 XL 8 mm probe provides reliable eddy current sensing, while the selectable hazardous area approvals ensure safe operation in Class I Division 1 and 2 environments.

Applications and Use Cases for the Bently Nevada 21000-28-00-00-030-04-02

This proximity probe housing assembly is ideal for oil and gas refineries, power generation plants, and petrochemical facilities. In these settings, the 21000-28-00-00-030-04-02 monitors vibration and displacement on critical rotating machinery, such as pumps, motors, and compressors. Its CSA Type 4 enclosure and explosion-proof rating make it suitable for hazardous areas with flammable gases or dusts. Additionally, the assembly complies with API 670 standards for externally mounted probes, ensuring compatibility with industry best practices. By providing early warning of mechanical faults, this unit helps prevent catastrophic failures and reduces maintenance costs.

Installation and Setup of the 21000-28-00-00-030-04-02

Installing the Bently Nevada 21000-28-00-00-030-04-02 requires careful attention to mounting and wiring. The assembly includes a dome cover, threaded conduit ports, and a probe sleeve of optional length. First, select the appropriate mounting thread (3/4-14 NPT) and fitting (one 3/4-14 NPT plug). Then, insert the reverse mount proximity probe into the sleeve, ensuring the probe cable length of 1.0 m is properly routed. The standoff adapter option (00) means no adapter is needed for standard installations. Always follow the manufacturer's manual for torque specifications and wiring diagrams. For hazardous area installations, verify that the circuit is non-incendive per drawing 140979. Proper setup ensures accurate readings and long-term reliability.

Maintenance and Reliability of the Bently Nevada 21000-28-00-00-030-04-02

Routine inspection of the 21000-28-00-00-030-04-02 extends its service life and maintains measurement accuracy. Periodically check the aluminum body and stainless steel sleeve for signs of corrosion or damage. Verify that the O-rings and thread seal remain intact to prevent moisture ingress. The probe cable should be inspected for wear or kinks, especially near connection points. Because this assembly is rated for hazardous areas, any maintenance must follow the manufacturer's safety manual. Regular calibration of the 3300 XL 8 mm probe ensures consistent performance. By investing in preventive care, operators reduce the risk of unexpected failures and optimize machinery uptime.

Compatibility and Integration of the 21000-28-00-00-030-04-02

The Bently Nevada 21000-28-00-00-030-04-02 integrates seamlessly with Bently Nevada monitoring systems, such as the 3500 series racks and software. It accepts standard proximity probe signals for vibration and position monitoring. The assembly is compatible with both aluminum (21000) and stainless steel (24701) housings, depending on environmental needs. For intrinsically safe applications, order hazardous area approved probes with the housing. The CSA Type 4 enclosure allows outdoor installation in harsh weather. While no specific communication protocols are listed, the probe output interfaces with typical Bently Nevada data acquisition modules. Always verify compatibility with your existing system before ordering.

Frequently Asked Questions about the 21000-28-00-00-030-04-02

What is the probe penetration length of the 21000-28-00-00-030-04-02?

The probe penetration is 3 in (030), as indicated by the suffix code.

What type of probe does the 21000-28-00-00-030-04-02 use?

It uses a 3300 XL 8 mm probe with selectable hazardous area approvals.

What is the cable length of the 21000-28-00-00-030-04-02?

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

Is the 21000-28-00-00-030-04-02 suitable for hazardous areas?

Yes, it is CSA certified for explosion-proof applications in Class I Division 1 and 2 Groups C and D, and Class II Division 1 and 2 Groups E, F, and G.

What is the weight of the 21000-28-00-00-030-04-02?

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

Product Support and Availability for the 21000-28-00-00-030-04-02

The Bently Nevada 21000-28-00-00-030-04-02 is available in new and original factory packing from Petro Auto Tech. Each unit comes with a 12-month factory warranty. For lifecycle status and ordering assistance, please contact Petro Auto Tech directly. In stock and ready to ship, this proximity probe housing assembly supports your critical machinery monitoring needs.