RKI Instruments SDM-E2 - Manual (Page 70)

65 • Calibrating a Standard 4-Gas Instrument
10. The pump will start and the program will indicate that air is flowing. The CAL
S
LED will begin to flash amber. Air will be applied to the instrument(s) for 45
seconds, then the PC Controller Program will perform a zero adjustment on all
the channels.
Figure 45: Air Flowing
The PC Controller Program will analyze the zero adjustment results. If any
sensors failed the zero adjustment, the calibration will be aborted.