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Extremely High Vacuum Gauge

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AxTRAN is a hot cathode type ionization vacuum gauge with a Bessel Box type energy filter installed between the ion source and the ion collector. This design provides a measurement resolution of 0.5×10-10Pa by reducing the residual current due to soft X-rays and electron stimulated desorption (ESD) ions.


  • Measures ultra high vacuum to extreme high vacuum
  • Bessel Box type energy filter:
    Reduce soft x-ray and residual current such as ESD ion
  • Measures a wide pressure range (1 x 10-2 to 0.5 x 10-10Pa)
  • Pressure is 0 to 10V Log output (psudo-log output) / 1V linear output within each digit
  • 2 set points output
  • Digital output(BCD) and serial communication(RS232C) : (option)


  • For total pressure measurement of vacuum equipment such as a high-energy accelerators.
  • For pressure measurement of ultra high or extreme high vacuum equipment used in UHV or XHV research work.
  • Conforms with CE

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