Quitting fcm, Quit and save changes, Quit without saving changes – Heath Consultants Gasurveyor 500 Series User Manual
Page 57: Quiting fcm, Save changes

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Quitting FCM
Quit And Save Changes
1) Press and hold Button Two
to save CAL data.
2) Double press Button One
to exit FCM.
Quit Without Saving Changes
1) Double press Button One
to exit FCM.
Note: When you exit the FCM without saving the new
CAL data, the old calibration data remains in the
instrument memory.
FIELD CALIBRATION