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The Velomitor CT Velocity Transducer is a low-frequency version of the standard Velomitor Piezo-velocity Sensor. It is specifically designed to measure casing vibration velocity on cooling tower and air-cooled heat exchanger fan assemblies that operate at or above 90 rpm (typically 100 to 300 rpm). The Velomitor CT Transducer is capable of measuring vibration amplitudes at these frequencies, as well as the vibration frequencies generated by the fan motor and speed reducer.

In addition, it is important to install the accelerometer transducer on the bearing housing or machine casing. Improper installation may reduce the transducer’s amplitude and frequency response, or generate false signals that do not accurately represent actual vibration. Refer to the appropriate instruction manuals and Application Notes for proper installation guidelines.

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

Frequently Asked Questions

Q1: What mounting hardware is included with the -07 option?

A: The "-07" suffix specifies a Plate Stud adapter with 3/8-24 to 3/8-24 threads on both ends, used for securing the transducer to the machinery housing.

Q2: What are the 190501-07-00-CN temperature limits for this transducer?

A: The unit is rated for an operating temperature of -40°C to +85°C (-40°F to +185°F). If the unit is being stored and not in use, it can withstand temperatures up to +100°C (+212°F).

Q3: How much physical shock can the sensor handle?

A: The 190501 series is highly ruggedized with a shock limit of up to 5000 g peak, protecting the internal piezo-electric sensor from sudden impacts or drops.

Q4: Is the 190501-07-00-CN sensor suitable for hazardous locations in China?

A: Yes. The -CN suffix indicates that it carries CNEX certification, making it compliant with Chinese national standards for use in explosion-proof or hazardous environments.

Q5: What is the primary difference between the -06 and -07 versions?

A: The only difference is the mounting thread size. The -06 uses a 3/8-24 to 1/4-28 adapter, while this -07 version uses a consistent 3/8-24 to 3/8-24 plate stud.

Product Applications

Oil and gas: Monitoring the vibration of oil pumps and compressors to prevent sudden failures.

Electricity industry: Monitoring the cooling system fans and large rotating machinery in power plants.

Chemical and pharmaceutical industry: Applicable to precision equipment such as reaction vessel mixers and drug pumps that require extremely high stability.

General manufacturing industry: Any industrial factory equipped with large low-speed fans or pump sets.