Product Overview

The Bently Nevada 190501-19-00-04 is a high-precision Velomitor CT (Cooling Tower) velocity transducer designed specifically for monitoring the structural vibration of low-speed rotating machinery. Utilizing advanced piezo-velocity technology, this sensor converts mechanical casing vibration into a proportional voltage signal, making it an essential component for Turbine Supervisory Instrumentation (TSI). Unlike standard velocity sensors, the CT variant is optimized to capture seismic vibration data from assets operating at speeds as low as 90 RPM. Its hermetically sealed 316L stainless steel housing ensures long-term survivability in the corrosive, high-humidity environments typical of industrial cooling cells and heat exchangers.

Key Technical Characteristics

The 190501-19-00-04 is engineered to provide stable, low-frequency measurements without the mechanical wear associated with traditional moving-coil transducers.

• Model Number 190501-19-00-04

• Transducer Type Piezo-velocity (solid-state integration)

• Sensitivity 3.94 mV/mm/s (100 mV/in/s) ±10%

• Frequency Response 1.5 Hz to 1.0 kHz (90 to 60,000 cpm) ±3.0 dB

• Mounting Interface 1/2-13 UNC Stud (Option -19)

• Hazardous Area Certification ATEX/IECEx/CSA (Option -04)

• Operating Temperature -40°C to +85°C (-40°F to +185°F)

• Housing Material 316L Stainless Steel

• Connector Type 2-pin MIL-C-5015 top-exit interface

• Dynamic Range 1270 mm/s (50 in/s) peak

Industrial Applications

This transducer is the industry standard for protecting assets where low-speed vibration signatures are critical for diagnosing mechanical health. By mounting the 190501-19-00-04 directly to bearing housings or gearboxes, operators can detect:

• Cooling Tower Fan Health Monitoring fan assemblies typically operating in the 100-300 RPM range to identify blade unbalance or aerodynamic issues.

• Air-Cooled Heat Exchangers Tracking vibration in fin-fan motors and speed reducers to prevent catastrophic structural failure.

• Low-Speed Gearbox Diagnostics Identifying tooth wear and shaft misalignment in slow-moving industrial transmission units.

• Predictive Maintenance Providing the necessary frequency data to implement condition-based monitoring, reducing unplanned downtime in power generation and petrochemical facilities.

The 190501-19-00-04 integrates seamlessly with Bently Nevada 3500/42M or 1900/65A monitors, ensuring that even slow-moving equipment is protected by high-fidelity vibration analysis and automated trip logic.