21000-34-10-20-039-03-02 | Bently Nevada 8 mm Probe Housing Assembly

Introduction to the 21000-34-10-20-039-03-02

When machinery uptime is critical, the 21000-34-10-20-039-03-02 from Bently Nevada delivers a robust solution for proximity probe housing. This assembly includes a 3300 XL 8 mm probe with connector protector, a 1.0 m (39 in) probe cable, and a 2.0 in standoff adapter. By providing secure mounting and hazardous area approvals, it helps reduce unplanned downtime and maintenance costs.

Key Features and Technical Specifications

• Probe option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals.
• Probe cable length: 1.0 m (39 in).
• Standoff adapter: 2.0 in.
• Probe penetration: 3.9 in.
• Mounting thread: 3/4-14 NPT.
• Material: Aluminum body with 304 stainless steel sleeve.
• Weight: 1.1 kg (2.4 lb) typical without fittings.
• Temperature range (3300 XL 8 mm probe): -51°C to +177°C (-60°F to +351°F) operating and storage.

A distinctive spec is the 3.9 in probe penetration, which allows precise positioning in tight installations, reducing the risk of misalignment and costly rework.

Applications and Use Cases

In rotating machinery monitoring, the 21000-34-10-20-039-03-02 excels at measuring shaft vibration and position. It is commonly used in turbines, compressors, and pumps where early fault detection lowers maintenance expenses. Moreover, its CSA Type 4 enclosure and explosion-proof rating for hazardous areas ensure safe operation in oil and gas facilities, further protecting capital investments.

Installation and Setup

Mounting the assembly requires a 3/4-14 NPT threaded port. The kit includes one 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and a cable seal grip with grommets for cable diameters from 1/8 to 3/8 inches. Proper torque on the dome cover and O-rings ensures a weathertight seal, avoiding moisture ingress that could lead to sensor failure and replacement costs.

Maintenance and Reliability

Regular inspection of the O-rings and cable seal grip helps maintain the CSA Type 4 enclosure rating. The aluminum body with 304 stainless steel sleeve resists corrosion in harsh environments, extending service life. By following periodic checks, users can avoid unexpected probe damage and associated downtime, maximizing ROI over the product's lifespan.

Compatibility and Integration

The 21000-34-10-20-039-03-02 is designed for use with Bently Nevada 3300 XL 8 mm proximity probes and compatible monitoring systems. It fully complies with API 670 Standard for externally mounted proximity probe housings, ensuring seamless integration into existing vibration monitoring architectures without additional adapters.

FAQ about the 21000-34-10-20-039-03-02

What is the probe cable length for this housing assembly?

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

What mounting thread does the 21000-34-10-20-039-03-02 use?

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

What is the temperature range for the 3300 XL 8 mm probe?

The operating and storage temperature range is -51°C to +177°C (-60°F to +351°F).

Is this housing assembly explosion-proof?

Yes, when ordered with CA version and appropriate options, it is rated explosion-proof by CSA for hazardous areas.

Product Support and Availability

The 21000-34-10-20-039-03-02 is in stock and ready to ship from Petro Auto Tech. Each unit comes as new and original in factory packing with a 12-month warranty. Contact Petro Auto Tech for lifecycle status and ordering assistance.