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Optical Gas Indicator - F1-21

Supplier: Control Equipment

The Riken Gas Indicator Model FI-21 is a precision gas analyzer which is adapted to measure the % volume concentration of any of the commonly used gas in a mixture of air or oxygen for solvents, fumigation, gas purity and anaesthetic gas.

Price Guide: POA


The standard instrument is calibrated for eight (8) selectable gas readings on the direct digital display. The FI-21 operating principle utilises the highly accurate measurement with CCD and Fourier analysis technology and electronic circuitry to provide direct digital readout. The FI-21 is equipped with a built-in sample draw pump for ease of use.

  • Capable of measurement for up to 8 kinds of gases;
  • Gas can be selected with key operation;
  • Direct digital readout;
  • Built-in sampling pump;
  • High accurate measurement with CCD and Fourier analysis technology;
  • Data logging stores up to 100 readings;
  • Few consumable parts saves maintenance cost.


  • Measurement of gas concentrations for solvent gases, fumigation gases, etc;
  • Measurement of gas purity;
  • Measurement of fuel calories;
  • Measurement of anaesthetic gases.