21000-16-10-15-144-03-02 Bently Nevada 21000 Aluminum Housing

Product Overview

The Bently Nevada 21000-16-10-15-144-03-02 is an ultra-long reach proximity probe housing assembly designed for large-scale industrial machinery. With a 14.4-inch penetration depth, this aluminum housing provides a secure, explosion-proof environment for 3300 XL 8mm sensors in deep-mount applications.

This model is specifically engineered for critical vibration monitoring on hydroelectric turbines and large petrochemical pumps. Fully compliant with API 670, it allows for external probe gapping and replacement without compromising machine integrity.

Technical Configuration

• Model: 21000 (Aluminum Body / 304 Stainless Steel Sleeve)
• Probe Option (-16): 3300 XL 8mm Probe
• Cable Length (-10): 1.0 meter (39 in)
• Standoff Adapter (-15): 1.5 inch (38 mm)
• Probe Penetration (-144): 14.4 inches (Ultra-Long Reach)
• Fittings (-03): Includes NPT plug, reducer, and cable seal kit
• Mounting Thread (-02): 3/4-14 NPT

Technical Specifications

Installation & Best Practices

Due to the 14.4" sleeve length, it is highly recommended to provide additional sleeve support to prevent resonance during operation. Ensure the 3/4-14 NPT port is clean and free of debris. Use the included 3-size grommet kit to secure field wiring ranging from 1/8" to 3/8" diameter.

Engineering Advantages

The 21000 series "Reverse Mount" design allows for probe maintenance from the exterior of the machine housing. This is vital for high-availability systems where stopping the machine for a sensor adjustment is not an option. The combination of lightweight aluminum and durable 304 SST ensures corrosion resistance in harsh environments.

Technical FAQs

Q1: Is this housing rated for hazardous zones?

A1: Yes, it is CSA certified for explosion-proof applications in Class 1 Div 1/2 environments.

Q2: Can I adjust the probe depth after installation?

A2: Yes, the assembly provides an adjustment range of approximately ±0.5 inches to fine-tune the gap setting.

Q3: Does the package include a reducer?

A3: Yes, the -03 option includes a 3/4-14 to 1/2-14 NPT reducer for standard conduit connectivity.

Download Datasheet: Access PDF Specifications