INFICON 2020ppbPRO Portable Photoionization Detector - Manual (Page 50)

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measure. The resolution is 10ppb. The meter will display concentrations from 10
ppb up to 40,000 ppb.
The 2020ppbPRO can power up in Logging Off, Tag, or Interval mode depending on
the mode that was set by the previous user. The current mode is shown in the
upper right-hand corner of the display.
Figure 9. Logging Off Mode Display
Figure 10. Tag Mode Display