Ampetronic FSM Field Strength Meter

(Inc VAT)
£370.00 (Exc VAT)

The FSM is an ergonomically designed handheld meter providing an ease of use solution for measuring, setting up and commissioning an induction loop system to the requirements of IEC60118-4. The meter has three calibrated operational modes for the assessment of Background Noise, Field Strength and Frequency Response that are required to ensure correct function of the loop system. With headphones, connected to the headphone output, it can also be used as a loop listener to listen to the signal in the loop.The meter is supplied in a soft case with an audio CD containing the test signals required, and full operating instructions including a guide to commissioning an induction loop system.

The Ampetronic FSM can be used to monitor, set up or commission any other manufacturers induction loop system.


  • Simple assessment of any system to

  • Three modes of operation for three test types

  • A-Weighted background noise • Broadband mode (50Hz - 8kHz)

  • Frequency response (100Hz, 1kHz, 5kHz)

  • True RMS detection calibrated to
    400mA/m = 0dB

  • Wide viewing angle LED display

  • Colour coded LEDs for simple readout

  • Resolution to 1dB

  • Headphone output with volume control

  • Ergonomic, rugged, lightweight construction

  • Test signals supplied on CD

  • Soft carry case

  • 5-year warranty

Applications include

  • Accurate set-up and commissioning

  • System monitoring and maintenance

  • Site surveys

  • Certification to IEC60118-4

  • Assessment of frequency losses due to metal

  • Assessment of loop coverage and overspill

  • Assessment of background noise

Included Accessories

  • Soft carry pouch

  • User guide/handbook

  • Commissioning Certificate (template)

  • Designing Induction Loops handbook

  • Batteries

  • CD of Test Signals
    Three different test signals are provided on CD to enable the set up of any induction loop system
    A combination of Pink noise with 1kHz sine wave bursts (30 mins)
    Pink noise (30 mins)
    Sine wave (1 min)


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