Product Overview

The Bently Nevada 190501-11-00-04 is a specialized Velomitor CT (Cooling Tower) velocity transducer designed specifically for low-frequency vibration monitoring. Unlike standard transducers, the CT variant is engineered to capture seismic vibration data from machinery with slow rotational speeds, typically ranging from 100 to 300 rpm. This makes it an essential component for the predictive maintenance and protection of cooling tower fans and air-cooled heat exchangers. By converting mechanical vibration into a proportional voltage signal, it allows control systems to monitor machine health and detect early signs of mechanical degradation.

Technical Characteristics

This transducer is optimized for sensitivity and durability in wet and demanding industrial environments.

Low-Frequency Precision The core technology of the 190501-11-00-04 is tuned to detect the subtle vibration signatures associated with low-speed machinery. It effectively identifies rotor unbalance, misalignment, and mechanical looseness by measuring the vibration transmitted from the rotating elements to the machine casing or bearing housing.

Mechanical and Electrical Interface This model features a 3/8-24 to 1/4-28 plate stud mounting interface, ensuring a rigid connection to the machine surface for accurate signal transfer. Electrical connectivity is handled via a rugged MIL-C-5015 connector, designed to maintain signal integrity despite high humidity or chemical exposure common in cooling tower applications.

Reliability in Protective Systems As part of a Turbine Supervisory Instrumentation (TSI) or general machinery protection system, the Velomitor CT provides a constant output that reflects the actual condition of the machine. Its solid-state design eliminates moving parts that could wear out, ensuring long-term stability and reducing the need for frequent recalibration.

Technical Specifications

• Brand: Bently Nevada

• Model Number: 190501-11-00-04

• Product Type: Velomitor CT Velocity Transducer

• Application: Low-speed vibration monitoring (100-300 rpm)

• Mounting Interface: 3/8-24 to 1/4-28 Plate Stud

• Connector Type: 2-pin MIL-C-5015

• Weight: 0.06 kg

• Dimensions: 1.8 x 1.6 x 12.3 cm

• HS Code: 8537101190

• Country of Origin: USA

Application Areas

The 190501-11-00-04 is the industry standard for monitoring slow-moving rotating equipment. It is primarily deployed on large-diameter cooling tower fans, air-cooled condensers (ACC), and low-speed gearboxes. In these applications, it provides the primary data source for vibration amplitude and frequency analysis, supporting predictive maintenance strategies that prevent catastrophic fan blade failures and unplanned cooling system outages.