21000-28-10-30-030-03-02 | Bently Nevada 1.0 m Probe Housing Assembly

Introduction to the 21000-28-10-30-030-03-02

When industrial machinery requires precise vibration monitoring in hazardous environments, the 21000-28-10-30-030-03-02 from Bently Nevada delivers a robust solution. This proximity probe housing assembly is part of the 21000 series, engineered for externally mounted probes. It combines an aluminum body with a 304 stainless steel sleeve for durability. The assembly includes a 3300 XL 8 mm probe with a 1.0 m cable length, a 3 in standoff adapter, and a 3 in probe penetration. Weighing 1.1 kg (2.4 lb) typical without fittings, it is designed for long-term reliability. By using this assembly, engineers reduce installation time and ensure consistent readings. The cost-benefit is clear: fewer false alarms and lower maintenance expenses over the equipment lifecycle.

Key Features and Technical Specifications

• Probe Option: 28 3300 XL 8 mm probe with selectable hazardous area approvals.
• Probe Cable Length: 10 1.0 m (39 in).
• Standoff Adapter: 30=3 in.
• Probe Penetration: 030=3 in.
• Fitting Option: 03 includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with grommets for cable sizes 1/8 to 3/16 in, 1/4 to 5/16 in, and 5/16 to 3/8 in.
• Mounting Thread Option: 02 3/4-14 NPT.
• Material: 21000 aluminum body with 304 stainless steel sleeve.
• Maximum (C) + (D) Dimension with Visible Probe: 17.0 in (43.18 cm) for 1.0 m cable; maximum (C) + (D) dimension 32.9 in (83.5 cm).
• Weight: 1.1 kg (2.4 lb) typical, without fittings.

The distinctive spec here is the 3 in standoff adapter and 3 in probe penetration, which together enable precise positioning in tight machine casings. This reduces installation errors and improves measurement accuracy, directly lowering operational costs.

Applications and Use Cases

The 21000-28-10-30-030-03-02 is ideal for rotating machinery monitoring in oil and gas, power generation, and petrochemical plants. For example, in a steam turbine application, the housing assembly mounts externally to measure shaft vibration without compromising the machine casing. Its CSA Type 4 enclosure rating ensures operation in harsh, wet environments. Additionally, the assembly supports intrinsically safe probes for hazardous areas, meeting API 670 standards. This compatibility simplifies system integration and reduces the need for custom enclosures, saving both time and money.

Installation and Setup

Mounting the 21000-28-10-30-030-03-02 requires standard tools and adherence to the provided fitting options. The assembly includes a 3/4-14 NPT plug and reducer for conduit connections. Ensure the probe sleeve is inserted to the correct penetration depth of 3 in. Use the supplied cable seal grip with the appropriate grommet for your cable diameter. For optimal performance, verify that the standoff adapter is securely tightened. Always follow the manufacturer's manual for torque specifications. Proper installation minimizes signal noise and extends probe life, contributing to lower total cost of ownership.

Maintenance and Reliability

Regular inspection of the 21000-28-10-30-030-03-02 housing assembly is essential for sustained accuracy. Check the O-rings and thread seal for wear every six months. The aluminum body and stainless steel sleeve resist corrosion, but verify that the conduit fittings remain tight. In hazardous areas, confirm that the CSA certification conditions (T5 @ Ta = -50°C to +40°C or T4 @ Ta = -50°C to +80°C) are maintained. By following a simple inspection schedule, users avoid unplanned downtime and extend the assembly's service life, delivering a strong return on investment.

Compatibility and Integration

The 21000-28-10-30-030-03-02 integrates seamlessly with Bently Nevada monitoring systems and third-party vibration analyzers. It is designed for use with 3300 XL 8 mm probes and supports CSA-approved hazardous area installations. The housing meets API 670 standards for externally mounted probes, ensuring compatibility with industry-standard mounting configurations. This plug-and-play compatibility reduces engineering time and eliminates the need for adapters, further lowering project costs.

Frequently Asked Questions

Q: What is the cable length of the 21000-28-10-30-030-03-02?

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

Q: What is the standoff adapter length?

A: The standoff adapter is 3 in.

Q: Is this housing assembly suitable for hazardous areas?

A: Yes, it supports selectable hazardous area approvals and is CSA certified for explosion-proof applications.

Q: What is the weight of the assembly?

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

Q: What mounting thread option is included?

A: The mounting thread option is 3/4-14 NPT.

Product Support and Availability

The 21000-28-10-30-030-03-02 is available as new and original in factory packing from Petro Auto Tech. It comes with a 12-month factory warranty. Contact Petro Auto Tech for current lifecycle status and ordering details. In-stock units ship promptly to minimize project delays.