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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

Q1: What is the Bently Nevada 190501-03-00-04?

A1: It is a Velomitor CT velocity transducer used for measuring vibration velocity in rotating machinery for condition monitoring and protection systems.

Q2: What is the 190501-03-00-04 sensitivity of this transducer?

A2: The 190501-03-00-04 sensitivity is 3.94 mV/mm/s (100 mV/in/s) ±5%, providing accurate vibration velocity measurement.

Q3: What is the 190501-03-00-04 base strain sensitivity?

A3: The base strain sensitivity is 0.43 mm/s/μstrain (0.017 in/s/μstrain), which helps reduce errors caused by structural strain.

Q4: What is the 190501-03-00-04 dynamic output impedance?

A4: The dynamic output impedance is typically less than 400 Ω, ensuring stable signal transmission.

Q5: How is grounding handled in this model?

A5: The internal electronics are electrically isolated from the case, improving noise immunity and signal integrity.

Product Applications

Electric power industry: Vibration monitoring of key rotating machinery such as turbines, fans, and pumps in power plants.

Petroleum and natural gas industry: Compressors, pumps, and drive units in petrochemical plants and refineries.

Chemical industry: Vibration monitoring of equipment such as reaction vessels and centrifuges.

Metallurgical industry: Vibration analysis of heavy machinery such as rolling mills and fans.