Market-Leading Machinery Protection

The Bently Nevada 190501-18-00-00 Velomitor CT (Cooling Tower) transducer represents the industry standard for monitoring low-speed machinery in harsh, high-moisture environments. Engineered specifically for the rigorous demands of cooling tower fans and air-cooled heat exchangers, this piezo-velocity sensor converts vibration velocity directly into a 4-20 mA signal. This allows for seamless integration into DCS, PLC, or SCADA systems without the need for additional signal conditioners. Its rugged stainless steel construction ensures long-term stability and resistance to corrosive cooling tower atmospheres, providing operators with the critical data needed to prevent catastrophic mechanical failures and optimize maintenance schedules.

Decoding the 190501-18-00-00 Configuration

190501 - Product Series

Defines the Velomitor CT Velocity Transducer, a specialized piezo-electric sensor optimized for lower frequency ranges typical of large fan assemblies.

18 - Mounting Hardware Option

Specifies a 5/8-18 UNF (Unified Fine Thread) mounting stud. This robust mounting interface ensures maximum frequency response transmission from the machine housing to the sensor crystal.

00 - Connection Option

Indicates a 2-pin Mil-C-5015 top-exit connector. This standard industrial interface allows for quick disconnection and compatibility with a wide range of shielded twisted-pair cabling.

00 - Agency Approval Option

Designates the standard non-hazardous area version. This unit is intended for general industrial use where specialized explosion-proof certifications are not required, reducing procurement costs while maintaining high performance.

Critical Performance Parameters

Precision Installation Requirements

Achieving accurate vibration data requires a rigid mechanical coupling. Ensure the mounting surface is flat to within 0.001 inches and finished to 32 micro-inches. Apply a light film of silicone grease or oil to the mounting surface before torquing the 190501-18-00-00 to 13.5 N-m (10 ft-lb). For electrical integrity, always use shielded, twisted-pair cable to prevent EMI interference from large fan motors. The shield must be grounded at the monitor/DCS end only to avoid ground loops that can induce false vibration readings.

Superior Engineering Edge

The 190501-18-00-00 excels where standard accelerometers fail. By utilizing internal integration circuitry, it provides a velocity output that is far more sensitive to the structural resonances and imbalance forces found in large, slow-moving cooling tower fans. It integrates flawlessly with the Bently Nevada 3500/42M or 1900/65A monitors, yet its 4-20 mA scalability makes it a "plug-and-play" asset for Honeywell Experion PKS or Siemens PCS7 systems. Its hermetically sealed stainless steel case provides an impenetrable barrier against the 100% humidity and chemical treatment vapors common in industrial heat rejection loops.

Logistics and Handling

Lead Time: 3-5 days when payment finish.

Shipping Carriers: Worldwide shipping BY DHL/FEDEX/UPS.

Packaging Protocol: All units ship in original factory-sealed, anti-static industrial packaging to prevent ESD damage and ensure out-of-the-box calibration integrity.

Technical Field Support

Q1: Can I use the 190501-18-00-00 in an ATEX Zone 1 environment?

A1: No, the -00 agency approval suffix denotes the standard version. For hazardous areas, you must specify the -01 or -02 options which carry ATEX/IECEx certifications.

Q2: What is the primary difference between a standard Velomitor and this CT version?

A2: The CT (Cooling Tower) version is specifically tuned for lower frequency vibration (down to 1.5 Hz), whereas the standard 330500 Velomitor is designed for higher speed machinery with a floor of roughly 4.5 Hz.

Q3: How do I identify a failing transducer versus a cable fault?

A3: Monitor the "OK" status or bias voltage. A healthy 190501-18-00-00 typically maintains a bias around 10-12 VDC. If the voltage drops to zero or jumps to the supply rail, the cable is likely shorted or open.