21000-34-10-15-095-03-02 | Bently Nevada 1.0 m Probe Housing Assembly

Introduction to the 21000-34-10-15-095-03-02 Proximity Probe Housing Assembly

When machinery reliability demands precise vibration monitoring in hazardous environments, the 21000-34-10-15-095-03-02 from Bently Nevada provides a robust solution. This proximity probe housing assembly is part of the 21000 series, designed for external mounting per API 670 standards. It combines an aluminum body with a 304 stainless steel sleeve for durability in harsh industrial settings. The assembly includes a 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals, and a 1.0 m (39 in) probe cable. With a standoff adapter of 1.5 in and probe penetration of 9.5 in, it fits specific machine train configurations. The 21000-34-10-15-095-03-02 is engineered for explosion-proof applications, certified as CSA Type 4 enclosure.

Key Features and Technical Specifications of the 21000-34-10-15-095-03-02

• Probe Option: 3300 XL 8 mm probe with connector protector, selectable hazardous area approvals.
• Probe Cable Length: 1.0 m (39 in).
• Standoff Adapter: 1.5 in.
• Probe Penetration: 9.5 in.
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and cable seal grip with grommets for cable sizes 1/8 to 3/8 inches.
• Mounting Thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension: 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.
• Certifications: CSA explosion-proof for hazardous areas, CSA Type 4 enclosure, compliant with API 670.

A standout feature is the 9.5 in probe penetration, which allows deep insertion into bearing housings for accurate shaft displacement measurement. This spec is critical for large rotating machinery where standard probes cannot reach the target zone.

Applications and Use Cases for the Bently Nevada 21000-34-10-15-095-03-02

In petrochemical plants, refineries, and power generation facilities, the 21000-34-10-15-095-03-02 monitors vibration on compressors, turbines, and pumps. Its CSA explosion-proof rating makes it suitable for Class I, Division 1 hazardous areas. The assembly is fully compliant with API 670, ensuring compatibility with industry-standard monitoring systems. For example, in a gas turbine installation, the 9.5 in probe penetration reaches the shaft through thick bearing housings, providing reliable data for predictive maintenance. Additionally, the selectable hazardous area approvals allow the same probe to be used across different safety zones, reducing inventory complexity.

Installation and Setup Guide

Mount the housing using the 3/4-14 NPT thread option. Ensure the standoff adapter (1.5 in) is correctly positioned to achieve the required gap. The cable seal grip accommodates cable diameters from 1/8 to 3/8 inches. Use the provided 3/4-14 NPT plug and reducer for conduit connections. Verify that the probe tip is clean and free of debris before insertion. Follow Bently Nevada's recommended torque values for the dome cover to maintain the explosion-proof seal. For optimal performance, route the probe cable away from high-voltage lines and sharp edges.

Maintenance and Reliability Tips

Regularly inspect the O-rings and thread seal for wear or damage. Check the cable seal grip for tightness to prevent moisture ingress. The aluminum body resists corrosion, but periodic cleaning with a dry cloth is recommended. Verify the probe's electrical continuity and insulation resistance annually. The 21000-34-10-15-095-03-02 is built for long service life in harsh environments, reducing total cost of ownership. For safety-rated equipment, always refer to the manufacturer's manual for inspection intervals.

Compatibility and Integration

The 21000-34-10-15-095-03-02 works with Bently Nevada 3500 and 3300 monitoring systems. It accepts 3300 XL 8 mm probes with connector protectors. The assembly is designed for external mounting on machine cases, per API 670. For intrinsically safe applications, pair with hazardous area approved probes. The CSA Type 4 enclosure ensures protection against dust and water jets, making it suitable for outdoor installations.

Frequently Asked Questions about the 21000-34-10-15-095-03-02

Q: What is the probe cable length of the 21000-34-10-15-095-03-02?

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

Q: What mounting thread does this assembly use?

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

Q: Is the 21000-34-10-15-095-03-02 suitable for hazardous areas?

A: Yes, it is CSA explosion-proof rated for hazardous areas and CSA Type 4 enclosure.

Q: What is the probe penetration depth?

A: The probe penetration is 9.5 in.

Q: What materials are used in the housing?

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

Product Support and Availability

The 21000-34-10-15-095-03-02 is available as new and original in factory packing from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship, this assembly supports your critical machinery monitoring needs.