Your choice for test and measurement solutions
  • TEL: (630) 365-4030 | FAX: (630) 365-4031
0 item:

Your shopping cart is empty!

The Ono Sokki FT-2500 Advanced FFT Tachometer measures the rotational speed using an FFT calculation from the frequency signal of light, magnetism, vibration or sound.

BROCHURE: View Literature (PDF)


  • Allows easy evaluation of RPM even when rotating shafts are not directly accessible.
  • Does not require the application of reflective markers.
  • Added versatility when combined with a range of detectors, including: leakage flux detectors, optical fiber sensors, accelerometers and sound level meters.
  • Two stage upper/lower limit comparator output or RS-232C interface, ideal for GO/NO GO determinations.
  • Analog and Pulse outputs.


Computing System1024-Point FFT Calculation
Measurement RPM Range500 Hz Range: 3.75 Hz to 500 Hz, 2 kHz Range: 15 Hz to 2 kHz, 10 kHz Range: 75 Hz to 10 kHz
RPM ResolutionFrequency Range (Hz) / 12800 x 60 / Set Pulse Count (P/R)
Measurement Accuracy± 2 x RPM Resolution ± 1
Measurement Time500 ms or Less
DisplayBlue-Green LED, 6 Digits
Pulse Count Set Range0.5 to 199.5 P/R in 0.5 Steps
Rotational Direction Determination FunctionDisplays CW or CCW (When Used With FT-0501)
Exponential AveragingSelect: Off, 2, 4, 8, or 16 Times
Analog Output0 to 10V / Full Scale
Pulse Output0 to 5V TTL
Comparator OutputYes
InterfaceD-SUB (15-Pin Connector)
Dimensions144 mm (W) x 72 mm (H) x 180 mm (D)
WeightApproximately 1.2kg

Contact Us

  • Fox River Systems
  • 902 S. Randall Rd., Suite C, #328 
    Saint Charles, IL 60174
  • Tel: +1 (630) 365-4030
    Fax +1 (630) 365-4031
  • This email address is being protected from spambots. You need JavaScript enabled to view it.

Mobile Menu