RKI Instruments SDM-2012 PC Controlled Configuration - Manual (Page 108)

103 • Calibrating a Gas Tracer
14. The pump will start and the program will indicate that air is flowing. The AIR
indicator on the program screen will be on. The CAL
S
LED will begin to flash
amber. Air will be applied to the ppm sensor for 45 seconds, then the PC
Controller Program will perform a zero adjustment on the ppm sensor.
If at any point during the calibration you wish to cancel the calibration, click the
Cancel button in the lower right corner of the screen. The calibration will be
aborted and the CAL
S
LED will turn solid amber.
Figure 81: Air Flowing, PPM Sensor
The PC Controller Program will analyze the zero adjustment results. If the ppm
sensor failed the zero adjustment, the calibration will be aborted.