Product Overview

The Bently Nevada 190501-00-00-CN is a high-precision Velomitor CT (Cooling Tower) transducer designed specifically for seismic vibration monitoring on low-speed rotating machinery. As a piezoelectric velocity sensor, it integrates internal solid-state electronics to convert acceleration into a linear velocity signal, eliminating the mechanical wear issues associated with traditional moving-coil transducers. This specific model features the "CN" designation, indicating compliance with regional Chinese industrial standards and approvals. It is engineered to capture the unique vibration signatures of cooling tower fans and air-cooled heat exchangers, where operating speeds typically fall between 100 and 300 rpm.

Key Technical Characteristics

The 190501-00-00-CN is optimized for low-frequency fidelity and extreme environmental resilience, ensuring stable data transmission in saturated or corrosive atmospheres.

• Model Number 190501-00-00-CN

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

• Sensitivity 3.94 mV/mm/s (100 mV/in/s) ±5%

• Frequency Response 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±3.0 dB

• Mounting Configuration No stud included (Option -00)

• Connector Interface 2-pin MIL-C-5015 top-exit

• Dynamic Output Impedance Typically less than 400 Ω

• Construction Material 316L Stainless Steel housing

• Certifications Regional CN-specific hazardous area and industrial approvals

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

Industrial Applications

The Velomitor CT 190501-00-00-CN is a critical asset for Turbine Supervisory Instrumentation (TSI) and predictive maintenance programs. Its ability to monitor structural vibration at very low frequencies makes it indispensable for several specific industrial use cases:

• Cooling Tower Fan Assemblies Detecting blade unbalance, gearbox degradation, and misalignment in fans operating as low as 90 rpm.

• Air-Cooled Heat Exchangers (Fin-Fans) Providing continuous seismic monitoring to identify motor and speed reducer faults.

• Slow-Speed Gearboxes Tracking absolute vibration on bearing housings for large-scale industrial transmissions.

• Harsh Environment Monitoring Utilizing the hermetically sealed 316L stainless steel enclosure to survive high-humidity and chemically aggressive cooling cell environments.

By integrating this sensor with Bently Nevada 3500/42M or 1900/65A monitors, plant operators can establish reliable alarm and shutdown logic, preventing catastrophic failures and extending the life of low-speed rotating assets.