RKI Instruments SM-2003U - Manual (Page 27)

Calibrating Instruments • 27
NOTE: If one or more of the sensors fails the zero operation,
then the calibration station will abort the calibration and
will not apply calibration gas. If this happens, the CAL.
status LED will blink red indicating a failure and the
CAL. control LED will stop blinking and be on steadily
green.
• Apply calibration gas to the instrument for 90 seconds.
• Purge the system with fresh air for 30 seconds.
8. After the system is purged, the CAL. control LED will stop blinking
and be on steadily green and the CAL. status LED will be on
steadily green if the calibration passed or steadily red if the
calibration failed.
9. The results of the calibration will be stored in the calibration
station’s memory and will be available to copy to a USB flash drive.
See “Copying Calibration and Bump Test Records to a USB Flash
Drive” on page 34 for instructions to copy the saved bump test and
calibration data to a USB flash drive.
10. If you want to perform a calibration on a GX-2003 with 100%
volume methane, see “Bump Testing and Calibrating a GX-2003
with 100% Volume Methane” on page 28 for instructions.
11. Turn off the instrument by pressing and holding the BUMP and
VOL. control buttons simultaneously for at least one second and
then releasing them. If no control buttons are pressed for 10
minutes, the calibration station will automatically turn off the
instrument.
CAUTION: When using the GX-2001 with the SM-2001U or the
GX-2003 with the SM-2003U, do not turn off the
instrument using the instrument power switch. Use
the BUMP and VOL. control buttons on the
calibration station to turn off the instrument.
12. Remove the instrument from the calibration station.