Product Overview

The Bently Nevada 190501-07-00-01 is a specialized piezo-velocity sensor designed for the demanding requirements of low-speed machinery monitoring. As part of the Velomitor CT (Cooling Tower) series, this transducer is specifically tuned to capture vibration signatures on assets rotating as slowly as 90 RPM. It converts mechanical casing vibration into a proportional voltage signal, allowing for the early detection of structural and mechanical faults that standard velocity sensors might overlook. Encased in a hermetically sealed 316L stainless steel body, the 190501-07-00-01 is built to thrive in the high-humidity, corrosive environments found in industrial cooling towers and heat exchangers.

Technical Hardware Parameters

This transducer utilizes advanced internal integration electronics to provide a clean velocity output while maintaining high resistance to environmental interference.

• Model Number 190501-07-00-01

• 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 3/8-in 24 UNF plate stud (Option -07)

• Hazardous Area Rating ATEX/IECEx/CSA Class I, Zone 0/1 (Option -01)

• Case Material 316L Stainless Steel

• Base Diameter 33 mm (1.3 inches)

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

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

Industrial Applications

The 190501-07-00-01 is the primary choice for Turbine Supervisory Instrumentation (TSI) on large-diameter, slow-moving fan assemblies. Its specialized low-frequency response makes it indispensable for:

• Cooling Tower Protection Monitoring fan decks and gearboxes to identify blade unbalance or aerodynamic instability in the 100-300 RPM range.

• Air-Cooled Heat Exchangers (Fin-Fans) Detecting early-stage bearing degradation in drive motors and speed reducers.

• Low-Speed Gearbox Diagnostics Capturing sub-synchronous vibration and gear mesh frequencies on large industrial transmission units.

• Predictive Maintenance Providing high-resolution data for trending misalignment and mechanical looseness in harsh, outdoor processing zones.

By integrating this sensor with a Bently Nevada 3500/42M or 1900/65A monitor, facility managers can establish a robust machinery protection framework that prevents catastrophic fan failures and extends the mean time between repairs (MTBR) for critical heat exchange infrastructure.