Autozero is on – Aalborg XFM Digital User Manual
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Figure b-6: XFM Screen in the beginning of Auto Zero procedure.
The Auto Zero procedure normally takes 1 - 2 minutes during which time the DP
Zero counts and the Sensor reading changes approximately every 3 to 6 seconds.
Figure b-7: XFM during the Auto Zero procedure.
The nominal value for a fully balanced sensor is 120 Counts. If the XFM’s digital
signal processor was able to adjust the Sensor reading within 120 ± 10 counts,
then Auto Zero is considered successful. The status LED will return to a constant
GREEN light and the screen below will appear:
Figure b-7: XFM during the Auto Zero procedure.
If the device was unable to adjust the Sensor reading to within 120 ± 10 counts,
then Auto Zero is considered as unsuccessful. The constant RED light will appear
on the status LED. The user will be prompted with the “AutoZero ERROR!” screen.
AUTOZERO IS ON!
AUTOZERO IS ON!
S: 405 DP: 512
AutoZero is Done
S: 122 DP: 544
Note: The actual value of the Sensor and DP counts will vary for each
XFM.
Note: For XFM with RS-232 option all Auto Zero status info available
via digital communication interface.