Product Overview

The Bently Nevada 138493-01 is a specialized DIN-rail mounting base designed to provide a secure and thermally stable installation platform for 3300 XL series Proximitor sensors. This mounting component is essential for modernizing machinery protection systems, allowing for the high-density installation of transducer interfaces within industrial control cabinets. It ensures that the electronic signal conditioning modules are physically isolated and properly aligned for optimal performance.

While the 138493-01 serves as a foundational mounting accessory, it is frequently utilized in systems monitoring massive steam turbines where extended-range measurements are required. It supports the infrastructure for Bently Nevada’s high-performance 50mm transducer systems, which are capable of delivering a 27.9mm (1100 mils) linear range for critical Differential Expansion (DE) and Rotor Expansion (RX) tracking.

Technical Characteristics and Utility

• System Integration: Engineered specifically to accommodate 3300 XL Proximitor sensors, facilitating the transition from legacy 7200 or 3000 series installations to modern monitoring architectures.

• High-Density Configuration: The DIN-mount design allows multiple sensors to be installed in close proximity, saving significant space in Turbine Supervisory Instrumentation (TSI) cabinets.

• Mechanical Stability: Provides a vibration-resistant foundation that maintains the structural integrity of the transducer signal chain, crucial for maintaining accurate gap voltage readings.

• Versatile Application Support: Compatible with both standard 8mm systems and specialized 50mm extended-range systems used for measuring thermal growth differences between turbine rotors and casings.

• Electrical Isolation: Designed to provide inherent electrical separation between the Proximitor housing and the DIN rail, reducing the risk of ground loops and interference in electrically noisy environments.

• Ease of Maintenance: Enables rapid "snap-on" installation and removal of sensors, significantly reducing downtime during maintenance or component replacement cycles.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 138493-01

• Product Series: 3300 XL / 50mm Transducer Systems

• Mounting Type: 35mm DIN-Rail

• Weight: 1.08 kg

• Dimensions: 8.5 x 8.5 x 30.5 cm

• Condition: Brand New

• HS Code: 8537101190

• Origin: USA

Industrial Application Areas

• Steam Turbine Monitoring: Supporting the measurement of differential expansion (DE) using large-diameter probe systems.

• Compressor Protection: Housing NSv (Near Side-view) proximity sensors for machines with limited installation clearance or small shaft diameters.

• Power Generation Facilities: Providing a modular mounting solution for redundant measurement setups (single-collar or dual-transducer arrangements).

• Retrofit Projects: Serving as the primary mounting upgrade path when replacing 3300 RAM or older proximity transducer systems.