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The Velomitor CT Velocity Transducer is a low-frequency version of our standard Velomitor Piezo-velocity Sensor. Its design specifically measures casing vibration velocity on cooling tower and air-cooled heat-exchanger fan assemblies that operate at or above 90 rpm (100 to 300 rpm typical).

The Velomitor CT Transducer can measure vibration amplitudes at these frequencies as well as the vibration frequencies generated by the fan motor and speed reducer.

In addition, be careful to install the accelerometer transducer on the bearing housing or machine casing. Improper installation may decrease the transducer amplitude and frequency response and/or generate false signals that do not represent actual vibration. Refer to the appropriate instruction manuals and Application Notes.

Upon request, Bently Nevada provides engineering services that can identify the appropriate machine housing measurements and installation assistance if needed.

Frequently Asked Questions

1. What is the Bently Nevada 190501-23-00-CN Velocity Transducer?

The Bently Nevada 190501-23-00-CN is a Velomitor CT Velocity Transducer designed to measure casing vibration on low-speed rotating machinery such as cooling tower fans, air-cooled heat exchangers, pumps, and motors.

2. What does Mounting Hardware Code 23 mean?

Mounting Hardware Code 23 specifies a Plate Stud with a 3/8-inch 24 thread to M8×1 thread. This mounting option provides a secure installation for equipment using an M8×1 threaded mounting point while ensuring accurate vibration transmission.

3. What is the sensitivity of the 190501-23-00-CN?

The 190501-23-00-CN transducer has a sensitivity of 3.94 mV/mm/s (100 mV/in/s) ±5%, providing precise vibration velocity measurements for machinery diagnostics and continuous condition monitoring.

4. What is the 190501-23-00-CN frequency response?

The 190501-23-00-CN offers a frequency response of 3.0 Hz to 900 Hz (180 to 54,000 cpm) ±1.0 dB, making it ideal for monitoring low-speed rotating equipment while maintaining excellent measurement accuracy.

Product Applications

Power Industry: Asset protection for peripheral circulating water pumps, large fans, and low-speed rotating equipment in thermal power plants, hydropower plants, and nuclear power plants.

Oil & Gas/Chemical Industry: Production lines in refineries, natural gas gathering and transmission stations, etc., that operate continuously for extended periods and are extremely sensitive to equipment downtime.

Metallurgy & Cement Plants: Early fault warning for large exhaust fans, crushers, and other low-speed heavy industrial machinery.