Three possible combinations here:
ST means there are no bad calibration errors,
fs means the analyzer failed to span
fz means the analyzer failed to zero
In the case that there has been a bad span
and a bad zero, the last bad calibration is
shown. When that one is done right then, the
other bad calibration is shown. Both are
cleared when both calibrations are done right
or unit is reset.
fw is used whenever a different kind of failure
is triggered by the analyzer that requires
operator attention by reading a message on
the analyzer such as the plasma being off.
This flag should reset itself if the error
condition goes away (go back to ST)
The concentration number must have two
decimal places, for example:
1.01
21.10
501.23