Tachometer measures rpm on applications that are considered impossible to measure.



Addison, IL October 2, 2009 Ono Sokki Technology, Inc. re-introduces their FT-1500 advanced tachometer. The FT-1500 measures rpm in applications where all other tachometers fail or deliver poor performance (e.g. a rotor your are unable to view, where it is not possible to mount reflective tape or a speed pickup etc&)

This instrument achieves accurate rpm on motor, and motor assemblies that are considered very difficult or impossible to take measurements on. Some typical motor and motor assembly applications are (hair dryers, shavers, pencil sharpeners, car mirrors, electric tools), turbines, fans, reciprocating machinery, hermetically sealed compressors and pumps, engines (gasoline & diesel), etc.


For applications that are considered very difficult to perform rpm on, it is both costly and time consuming to disassemble a motor assembly, measure rpm, and then reassemble, especially when it comes to high production lines.




Since the FT-1500 requires no reflective markers to measure rpm, this is good for situations where it is impractical to stop a turbine or fan to add a piece of reflective tape to its blade. Therefore, using this type of system there is no need to stop the machine before taking the measurement, so costly down time may be avoided.

In some applications attaching a reflective marker or machining a special fixture on a rotating member is not possible. In these applications it is possible to select an alternate sensor, such as a microphone or vibration transducer, and use the FT-1500 to measure rpm even when the rotating surface is inaccessible while conducting the measurement.

How it works ? The FT-1500 uses the advanced FFT (Fast Fourier Transform) technique. Never has this technique been incorporated in a tachometer.

The FT-1500 uses this technique to extract the rpm related frequency components from a wide variety of signal sources. In addition to accepting inputs from conventional sensors, such as photoelectric detectors and magnetic pickups, the FT-1500 can process the complex signals derived from microphones, vibration transducers, pressure transducers, current probes, etc& and provide reliable rpm indication.



Conventional tachometers require conditioned waveforms (square or sine waves) from the sensing source in order to accurately measure rpm. Up to now it was near (to impossible) to correctly measure rpm when the signal form the sensor is a complex waveform.

Features :
The FT-1500 is quick and easy to set up and operate, along with an built in setup memory.

The FT-1500 has two input channels, so you may use two transducers. This is good for applications where you need to determine whether the rotation is clockwise or counter clockwise, as well as rpm.

The comparator Go/Nogo function allows you to set upper and lower limits. Once your limits have been set, you can tell whether your product is Good or No Good either by observing the red and green indicator lights or by using the contacts to hook up a buzzer or alarm.
Remote operation and control is possible via standard GP-IB interface