21000-16-10-00-046-03-02 Bently Nevada 4.6 Inch Depth Probe

Product Overview

The Bently Nevada 21000-16-10-00-046-03-02 is a high-reliability Proximity Probe Housing Assembly designed for external mounting on critical industrial machinery. This explosion-proof enclosure integrates a 3300 XL 8mm proximity probe, providing precise vibration and position monitoring in hazardous environments. Engineered to meet API 670 standards, the 21000 series features an aluminum body and a 304 stainless steel sleeve, ensuring superior protection for transducers used in gas turbines, compressors, and pumps.

Technical Configuration

• Manufacturer: Bently Nevada (Baker Hughes)
• Part Number: 21000-16-10-00-046-03-02
• Probe Option: 3300 XL 8 mm probe with connector (16)
• Probe Cable Length: 1.0 m / 39 in (10)
• Standoff Adapter: No standoff adapter (00)
• Probe Penetration (Option D): 4.6 Inches / 116.8 mm (046)
• Fittings: NPT Plug, Reducer, and Multi-size Cable Seal Grips (-03)
• Mounting Thread: 3/4-14 NPT (02)

Technical Specifications

Installation & Adjustment Features

1. Penetration Depth & Adjustment: The 21000-16-10-00-046-03-02 provides a 4.6-inch penetration into the machine case. For precise transducer gapping, this dimension (Option D) offers an adjustment range of ± 0.5 inches (13 mm). This flexibility ensures the probe tip is perfectly positioned relative to the target shaft for accurate data acquisition.

2. Hazardous Area Compliance: These housings are certified by the Canadian Standards Association (CSA) for explosion-proof applications. They are fully compliant with API 670 for externally mounted housings and are rated for intrinsically safe applications when connected via non-incendive circuits, ensuring safety in volatile North American Class 1 and Class 2 divisions.

3. Comprehensive Fitting Kit: The -03 fitting option simplifies field installation by providing a 3/4-14 NPT plug and a reducer (3/4" to 1/2"). Furthermore, it includes a cable seal grip with three distinct grommets to accommodate cable diameters ranging from 1/8 inch to 3/8 inch, guaranteeing a gas-tight seal.

Engineering Advantages

Bently Nevada 21000 series housings are the industry standard for protecting reverse-mount proximity probes. By utilizing a 304 stainless steel sleeve, the assembly resists corrosive industrial environments while maintaining the mechanical rigidity necessary for high-vibration applications. The dome cover design allows for easy access to probe connections, while the CSA Type 4 rating ensures the internal components remain dry and free from contaminants, maximizing the service life of the 3300 XL sensing system.

Technical FAQs

Q1: What is the benefit of the 0.5-inch adjustment range?
A1: It allows technicians to compensate for variations in machine case thickness or gasket compression, ensuring the probe gap is set correctly without needing custom-machined standoff adapters.

Q2: Does this model require a sleeve support?
A2: No. Sleeve supports are only required for penetration lengths (C+D) greater than 12 inches (300 mm). At 4.6 inches, this model is inherently stable against mechanical resonance.

Q3: Is this housing compatible with RoHS regulations?
A3: Yes, the 21000 series is fully compliant with RoHS Directive 2011/65/EU, ensuring it meets modern environmental safety standards for hazardous substances.