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ONOSOKKI

FT-2500 Advanced FFT Tachometer

Precision You Can Trust
NABL-Accredited Calibration | Available on Request

The FT‑2500 is a high-performance FFT-based tachometer that computes rotational speed from frequency inputs—such as light, magnetic flux, vibration, or sound—without requiring direct contact or reflective markers. It delivers exceptional RPM readings, even when shafts are inaccessible or signal sources are indirect..

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  • Special Features
  • Specification

The FT-2500 is designed for precision measurement in environments where conventional contact tachometers are not practical. By analyzing frequency components with FFT processing, it achieves high accuracy even with unstable or noisy signals. Its flexible outputs, including analog, pulse, and comparator, allow easy integration with other systems for monitoring, control, or data logging. The tachometer is ideal for automotive, industrial, and research applications, offering stable performance in both constant and rapidly changing rotational speed conditions.

  • FFT-Based Speed Detection – Uses fast Fourier transform analysis to deliver precise rotational speed measurement, even from complex signal waveforms.

  • Non-Contact Operation – Compatible with sensors like microphones, accelerometers, and magnetic detectors to measure from sound, vibration, or magnetic leakage.

  • Adaptive Measurement Modes – Offers constant mode for steady speeds and active mode for acceleration/deceleration, with peak tracking and loss recovery functions.

  • Multiple Output Options – Standard outputs include analog, pulse, and upper/lower comparators, with RS-232C communication. Ethernet connectivity is available as an option.

  • Easy-to-Read Display – Equipped with a six-digit blue-green fluorescent display for clear visibility in any environment.

Specification Details
Computation Method 1024-point FFT processing
Frequency Ranges 500 Hz, 2 kHz, 10 kHz
RPM Ranges 3.75–500 Hz (converted to RPM) with higher ranges possible
Accuracy ±2 × RPM resolution ±1 count
Update Time ≤500 ms
Display 6-digit blue-green fluorescent display
Outputs Analog (0–10 V or full scale), Pulse (0–5 V TTL), Comparator outputs
Communication Interface RS-232C standard; Ethernet optional
Compatible Detectors Microphones, accelerometers, flux detectors, and other compatible sensors
Measurement Modes Constant mode and active mode with multi-peak tracking
Dimensions (W×H×D) 144 × 72 × 180 mm
Weight Approx. 1.2 kg
Power Supply AC power input
Applications Engines, motors, compressors, turbines, and machinery where non-contact RPM detection is required