Product Overview

The Bently Nevada 190501-01-00-00 is a high-precision Velomitor CT (Cooling Tower) transducer engineered specifically for seismic vibration monitoring of low-speed rotating machinery. Utilizing advanced piezo-velocity technology, this sensor converts mechanical casing vibration into a proportional voltage signal, making it a cornerstone for Turbine Supervisory Instrumentation (TSI). Unlike standard velocity sensors, the CT variant is optimized to capture high-fidelity data from assets operating at frequencies as low as 1.5 Hz (90 RPM). Encased in a hermetically sealed 316L stainless steel housing, it is designed to survive the saturated, corrosive environments typical of industrial cooling cells and air-cooled heat exchangers.

Key Technical Characteristics

The 190501-01-00-00 is built for durability and precision, providing stable measurements without the mechanical wear associated with legacy moving-coil transducers.

• Model Identification 190501-01-00-00

• 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 1/4-28 UNF Stud (Option -01)

• Agency Approval None / Standard (Option -00)

• Connection Type 2-pin MIL-C-5015 top-exit connector (Option -00)

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

• Housing Material 316L Stainless Steel

• Orientation Omnidirectional (Mountable at any angle)

Industrial Applications and Use Cases

This transducer is the industry standard for monitoring equipment where low-speed vibration signatures are critical for mechanical health diagnostics. Its primary role is to detect rotor-generated faults transmitted through the machine casing.

• Cooling Tower Fans Monitoring fan assemblies typically operating between 100 and 300 RPM to identify blade unbalance or aerodynamic issues.

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

• Slow-Speed Gearboxes Detecting gear mesh frequencies and bearing degradation in slow-moving industrial transmission units.

• Predictive Maintenance Providing the precise seismic data required for automated machinery protection loops in power generation and petrochemical facilities.