Autozero is on – Omega FMA 4000 User Manual

Page 20

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Figure b-6: FMA 4000 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: FMA 4000 during the Auto Zero procedure.

The nominal value for a fully balanced sensor is 120 Counts. If the FMA 4000’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: FMA 4000 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
FMA 4000.

Note: For FMA 4000 with RS232 option all Auto Zero status info
available via digital communication interface.

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