This instrument measures the rotational velocity of DC motor. DC motors are used in a variety of fields, and in recent years, more accurate motor speed-measurement has become a key factor for the use of electric vehicles. In this case, OM-1200 electromagnetic-induction type detector is used. It is installed in parallel with rotation axis of DC motor to detect leakage flux from DC motor. Then frequency-analysis by FFT calculation process is performed with FT-7200 advanced handy tachometer, and the rotation speed is displayed.

FT-7200 is equipped with analog output and analog output for monitoring as standard. The analog output can be used to record changes in rotational speed with a pen recorder, etc., while the analog output for monitoring can be used as a waveform check signal.