Ono Sokki Company, Ltd.

Replaced by FT-2500 Advanced Tachometer

HOME > Products Information > Rpm & Speed > Advanced Tachometer FT-1500
Advanced Tachometer

 Photo (FT-1500 Advanced Tachometer)

The FT-1500 is an unique instrument for conducting rpm measurement in applications where conventional tachometers exhibit poor performance or are completely incapable of achieving the desired results. Utilizing FFT technique, it extracts rotational speeds from complex signals generated by rotary objects.
There is no need for affixing a reflection marker or any other material on the rotating shaft. The FT-1500 can measure the rpm even if the shaft is not accessible.



  • Non contact measurement

  • Measurement on inaccessible shafts

  • A wide variety of sensors to cover various applications

  • Various output functions provided as standard enabling in-line use and quality control

  • Easy to install DIN sized body



Applicable detectors FT-0501, FT-0601, FP-0701, NP series acceleration pickups, LA series sound level meters, etc.
Calculation method 1024-point FFT calculation
Frequency ranges

500 Hz range (3.75 Hz - 500 Hz)
2 kHz range (15 Hz - 2 kHz)
10 kHz range (75 Hz - 10 kHz)

Resolution 0.05 Hz (in 500 Hz range)
0.2 Hz (in 2 kHz range)
1 Hz (in 10 kHz range)
Display Green LED 6 digits, Display (r/min) = Input Frequency (Hz) * 60 / Number of pulses per rotation (P/R)
Accuracy ±2 * resolution
Measurement time 500 ms or less
Range of pulse rate 0.5 to 199.5P/R in 0.5 P/R steps
Detection of rotary direction CW, CCW (when used with FT-0501 detector)
Exponential averaging 2, 4, 8 or 16 averages
Analog output Voltage: 0 - 10 V (The full scale speed can be set arbitrarily within the measurement range.) with load resistance of 1 kilo-ohm or more
Comparison output Upper & lower limits, rotary directions
Contact capacity: 30 VDC, 0.1 A
Monitor output Common to the analog output connector, selected with a bit switch
Interface RS-232C (2400, 4800, 9600, 19200 bps)
Power supply 100 - 240 VAC (50/60 Hz)
Operating temperature range 0 to +40 °C
Weight 1.5 kg or less
Accessories Panel mounting fixture, stand, terminal block connectors (10-pin and 5-pin)
Options AX-5061 RS-232C interface cable
FT-0101 V/F pulse output


Dedicated sensors



Model FT-0501 FT-0601 FT-0701
Measurement object DC motor, etc. Rotary shaft, etc. Rotary shaft, fan, etc.
Detection method Magnetic leakage flux detection Reflected light detection (with LED and optical fiber) Reflected laser light detection (with optical fiber)
Specifications with a direct connected cable (3 m) with a connector Detection distance: approx. 5 mm, Fiber cable length: 2 m, with a direct connected cable (1.9 m) with a connector Visible light laser with 680 nm wave length, class 1, detection length: approx 30 mm, fiber cable length : 2 m, with MX-005 signal cable (5 m)
Operating temperature range -10 °C to +60 °C -10 °C to +50 °C +5 °C to +40 °C


Contact Us Questions and Inquireies (Feedback form) Back to previous page