Bently Nevada 190501-01-99-CN Velomitor CT Velocity Transducer

Description

Engineered for low-frequency machinery monitoring, the Bently Nevada 190501-01-99-CN is a highly durable velocity transducer designed specifically for cooling tower (CT) applications. It measures vibration severity on low-speed fans, gearboxes, and motors, facilitating early defect detection to prevent catastrophic mechanical failure. This transducer is housed in a hermetically sealed, corrosion-resistant 316L stainless steel enclosure, allowing it to withstand the wet, highly humid, and corrosive environments typical of industrial wet decks.

The configuration of this specific model includes the 01 mounting hardware option, which provides a 3/8-inch 24 to 3/8-inch 24 mounting stud, and the 99 connection option, which supplies the unit with an integrated 32-foot connection cable. The CN designator ensures conformity with country-specific compliance regulations, making it suitable for deployment in facilities requiring specialized localized safety and performance certifications.

Features

• Corrosion-Resistant Housing: Encased in 316L stainless steel to resist oxidation and chemical exposure in cooling tower environments.
• Integrated Cabling: Pre-wired with a 32-foot cable (Option 99) for continuous, reliable signal transmission without requiring field termination at the sensor head.
• Robust Mounting: Includes a 3/8-in 24 UNF threaded mounting stud (Option 01) to ensure optimal mechanical coupling to the machinery frame.
• Wide Operating Window: Performs consistently across a temperature range of -40 degC to +85 degC.
• Solid-State Performance: Eliminates moving mechanical parts subject to wear, offering superior long-term reliability compared to traditional moving-coil velocity sensors.

Applications

• Cooling tower fan gearboxes and structural support systems
• Low-speed industrial draft fans and heat exchangers
• Wastewater treatment aerators and pumps
• Petrochemical plant circulating water pumps

Technical Specifications

Installation Guidelines

• Surface Preparation: Ensure the flat mounting area on the machinery housing is at least 33 mm in diameter and machined to a flat finish to avoid measurement distortion.
• Thread Integrity: Hand-tighten the 3/8-in 24 stud into the transducer base and the machine mounting hole before applying final torque with calibrated tools.
• Cable Routing: Secure the 32-foot integrated cable along structural members using non-corrosive ties or flexible conduit to prevent whipping and physical wear from fan blade turbulent airflows.
• Grounding: To avoid ground loop interference, ground the cable shield solely at the monitor or local junction box interface.