21000-16-10-00-144-03-02 Bently Nevada 3300 XL Assembly

Product Overview

The Bently Nevada 21000-16-10-00-144-03-02 is a robust Proximity Probe Housing Assembly designed for external mounting on rotating machinery. This unit features an integrated 3300 XL 8mm proximity probe and is engineered to provide precise vibration, stall, and position measurements in hazardous industrial environments. Built to meet API 670 standards, the 21000 series utilizes an aluminum body and a stainless steel sleeve to ensure long-term durability and signal stability.

Technical Configuration

• Manufacturer: Bently Nevada (Baker Hughes)
• Part Number: 21000-16-10-00-144-03-02
• Probe Option: 3300 XL 8 mm probe with connector
• Probe Cable Length: 1.0 m (39 in)
• Standoff Adapter: None (00)
• Probe Penetration: 14.4 Inches (Dimension D)
• Fittings: NPT Plug, Reducer, and Cable Seal Grip with Grommets
• Mounting Thread: 3/4-14 NPT (02)

Technical Specifications

Installation & Critical Requirements

1. Support for Extended Penetration: Since the 21000-16-10-00-144-03-02 features a penetration depth of 14.4 inches (which exceeds 12 inches / 300 mm), it is mandatory to add sleeve support near the probe. This prevents mechanical resonance that could interfere with vibration readings or damage the probe assembly.

2. Adjustment Range: The probe penetration depth (Option D) offers an adjustment range of ± 0.5 inches (13 mm). This allows for fine-tuning the probe gap once the housing is mounted to the machine case, ensuring the transducer is positioned at the optimal distance from the target surface.

3. Conduit & Fittings: The -03 fitting option provides a comprehensive installation kit, including one 3/4-14 NPT plug and a 3/4-14 to 1/2-14 NPT reducer. The included cable seal grip comes with grommets accommodating various cable diameters from 1/8 to 3/8 inches, ensuring a gas-tight seal for the explosion-proof enclosure.

Engineering Advantages

The 21000 series is the industry standard for externally mounted proximity probes. By housing the 3300 XL probe in a CSA Type 4 rated aluminum enclosure, Bently Nevada ensures that the sensitive transducer is protected from weather, dust, and corrosive industrial atmospheres. This configuration specifically complies with the American Petroleum Institute (API) 670 Standard, making it suitable for high-stakes oil, gas, and power generation applications where equipment uptime is critical.

Technical FAQs

Q1: Is the 14.4-inch sleeve length rigid enough for high-vibration machines?
A1: While the 304 stainless steel sleeve is robust, Bently Nevada requires additional external support for any penetration over 12 inches to prevent resonance. Proper bracing is essential for measurement accuracy.

Q2: What happens if the probe cable isn't visible for labeling?
A2: For specific deep penetration lengths where only a small section of the cable is visible, the Probe P/N and S/S may be displayed on a flag label rather than the standard cable jacket marking.

Q3: Does this housing support intrinsically safe circuits?
A3: Yes, when connected according to specific manufacturer drawings (e.g., drawing 140979), the circuit is rated as non-incendive and is certified for hazardous area applications.