ALTAIR 4X
GB
41
- If calibration lockout option is NOT se-
lected:
ZERO screen displays.
(3) With the device exposed to fresh air,
press the ON/OFF button to confirm
the ZERO screen. A sensor refresh and
Zero Calibration will occur.
Alternatively press the button to execute a Fresh Air setup [FAS].
See chapter 3.2 for more details.
After Zero calibration completes, the device
momentarily displays “ZERO PASS” or
“ZERO ERR” along with the flag of any sen-
sor that failed.
During instrument zero calibration the O
2
sensor is also span calibrated
to 20.8% O
2
fresh air, adjusting the calibration curve as needed. During
instrument span calibration, the O
2
sensor's accuracy is checked
against a known oxygen gas concentration without adjusting the calibra-
tion curve.
FASIT Srl - Via Orsera 13/b - 34145 TRIESTE - ITALY - Tel +39 040 825604 - www.fasit.it
- info@fasit.it
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