Calibration
13
Calibration
was not
successful
English
Calibrating
with pure
oxygen
The OxySpy can also be calibrated with pure
medical oxygen (100%
O
2
).
• Please consider the general safety con-
siderations of using pure oxygen!
• The calibration gas has to be 100%
medical oxygen.
• At the gas input make sure that there is
a good seal and that air cannot be
sucked in.
The calibration procedure with pure oxygen is
similar to the one described in the chapters
"Calibrating in air" (page 12) and "Measure-
ment" (page 14).
After the pure oxygen calibration: "Flush"(move
it back and forth slowly) the OxySpy for 1 minu-
te in air and check the indicated value. The
value must be between 20.7 and 21.1%
O
2
. If
not, redo the calibration.
If the calibration has not been successfully com-
pleted or the calibration has been interrupted by
pressing the button switch, the display will show
a "- - -", for a short time. The OxySpy will then
change automatically into the measurement
mode. No new calibration values have been
entered and the indicated
O
2
% values are still
based on the old calibration data. The CAL sym-
bol is displayed to inform you about the unsuc-
cessful calibration.
Repeat the calibration if the CAL symbol is still
displayed after the calibration. Several calibrati-
ons without success could be an indication that
the
O
2
sensor needs to be replaced or a fluctua-
tion of the mixture of the calibration gas during
the calibration. The fluctuation of the gas mixtu-
re might have been caused by air leaking in at
the gas input due to a bad seal.
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