Product Overview

The Bently Nevada 190501-09-99-00 is a specialized Velomitor CT (Cooling Tower) velocity transducer designed for low-frequency vibration monitoring. Unlike standard piezo-velocity sensors, this unit is specifically tuned to detect seismic casing vibration on slow-rotating machinery. It converts vibration velocity into an electrical signal, allowing for the continuous supervision of mechanical health in assets where rotational speeds typically range between 100 and 300 RPM.

Hardware Parameters

• Model Number 190501-09-99-00

• Sensor Type Piezo-velocity (Velomitor CT)

• Frequency Response Optimized for 1.5 Hz to 1.0 kHz (90 to 60,000 CPM)

• Cable Configuration Integrated 32-foot (9.8 meter) lead cable

• Mounting Hardware 3/8-24 to 1/4-inch NPT plate stud

• Weight 0.06 kg (Sensor head)

• Construction Stainless steel hermetically sealed housing

• Measurement Output Velocity proportional to vibration amplitude

Industrial Applications

The primary deployment of the 190501-09-99-00 is within Cooling Tower (CT) fan assemblies and air-cooled heat exchangers. Its low-speed sensitivity makes it critical for identifying early-stage mechanical pathologies such as fan blade imbalance, gear reducer misalignment, and motor bearing degradation. By capturing data across both the fundamental fan frequency and higher-frequency ancillary component harmonics, it supports predictive maintenance strategies in demanding, high-humidity industrial environments.