ABB ZDT–FG Series Installation And Operating Manual page 19

...7.2 Two-point Calibration
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Calibrating Span
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Calibration Pass
Failed Constant
Failed Span
Failed Unstable
SECURITY CODE
Calibrating Span
The upper display indicates measured % oxygen. The display advances
automatically to the next frame when a stable reading is detected. To abort
calibration, press either the
Calibration Pass/Fail
On completion a calibration status message is displayed.
Calibration Pass
Failed Constant
Failed Span %
Failed Unstable
Note. If sensor calibration is unsuccessful then the 'Cell Zero mV' and 'Span %
of Theory' parameters are unaffected. The instrument continues to operate
using parameters stored during the last successful calibration.
Press to return to the top of the
Press to advance to the
7 PROGRAMMING...
or switch to advance to the next frame.
Calibration sequence successful
Cell offset >±10mV
(upper display shows cell constant)
Cell output <90% or >110% of slope
(upper display shows measured slope)
Cell output unstable (drifting).
Oxygen Calibration Page.
Secure Parameters Page.
17