Product Overview

The Bently Nevada 21000-00-00-00-000-00-02 is a premium aluminum housing assembly designed for the external mounting of proximity probes on critical rotating equipment. This enclosure is a cornerstone of Turbine Supervisory Instrumentation (TSI), providing a ruggedized interface that protects vibration sensors from environmental hazards. By utilizing an external housing, plant operators can perform gap adjustments and sensor replacements from the outside of the machine casing, eliminating the need for costly and time-consuming equipment disassembly.

The 21000 series is engineered to comply with API 670 standards for externally mounted transducers. This specific configuration provides a base platform for reverse-mount proximity probes, ensuring the sensor remains securely positioned relative to the target shaft for high-precision radial vibration or axial position monitoring.

Key Technical Characteristics

Built to sustain performance in high-risk industrial zones, this housing assembly prioritizes both sensor protection and hazardous area safety.

• Explosion-Proof Certification: Rated as a CSA Type 4 enclosure, the housing is suitable for installation in hazardous areas when integrated with intrinsically safe monitoring systems.

• Superior Environmental Protection: The assembly features a threaded dome cover that screws directly into the housing body, utilizing O-rings and specialized thread seals to prevent the ingress of moisture, oil, and dust.

• Flexible Mounting Options: Supports two 3/4-14 NPT explosion-proof fittings for conduit integration and can be paired with optional standoff adapters to meet specific machine geometry requirements.

• Rugged Aluminum Construction: The 1.08 kg aluminum body offers excellent corrosion resistance and mechanical durability while remaining lightweight for easy field installation.

• Maintenance Optimization: The design facilitates "on-the-fly" probe gapping, which is essential for maintaining the correct linear electrical range of the 3300 or 3300 XL transducer systems.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 21000-00-00-00-000-00-02

• Housing Material: High-grade Aluminum

• Enclosure Rating: CSA Type 4 (Explosion-proof)

• Port Configuration: Dual 3/4-14 NPT Threaded Ports

• Mounting Style: External Casing Mount

• Standard Compliance: API 670

• Dimensions: 8.5 cm x 8.5 cm x 30.5 cm

• Net Weight: 1.08 kg

• Country of Origin: USA

Industrial Applications

The 21000-00-00-00-000-00-02 housing is an industry-standard solution for safeguarding high-value assets in sectors such as power generation, oil and gas, and petrochemical processing. Typical machinery applications include:

• Steam, gas, and hydroelectric turbines

• Large centrifugal and axial compressors

• High-pressure boiler feed pumps

• Industrial gearboxes and large-scale electric motors