ABL800 FLEX Reference Manual
2. Amperometric measuring principles
pO
2
electrode,
Continued
Stability criteria
(continued)
The following stability criteria must be met in order to obtain a stable electrode
response during
measurement
:
δ
=
|
p
O
2
(sample,upd.30)
−
p
O
2
(sample,upd.1)
|
For
δ
Criterion
≤
2.66 kPa
80
.
0
)
upd.16
(sample,
O
(sample)
O
2
2
≤
−
p
p
>
2.66 kPa
6
.
0
upd.6)
(sample,
O
)
upd.18
(sample,
O
)
upd.18
(sample,
O
)
upd.30
(sample,
O
2
.
0
2
2
2
2
<
−
−
≤
−
p
p
p
p
For
δ
>
2.66 kPa:
if the following criteria are fulfilled then no result is reported:
0
.
1
upd.6)
(sample,
O
)
upd.18
(sample,
O
)
upd.18
(sample,
O
)
upd.30
(sample,
O
2
2
2
2
−
<
−
−
p
p
p
p
or
6
.
0
upd.6)
(sample,
O
)
upd.18
(sample,
O
)
upd.18
(sample,
O
)
upd.30
(sample,
O
2
2
2
2
≥
−
−
p
p
p
p
Expired air samples:
Measurement on an expired air sample is accepted if the following criterion is
fulfilled:
⏐
p
O
2
(sample,upd.30)
−
p
O
2
(sample,upd.24)
⏐≤
0.80 kPa/6.0 mmHg,
or
⏐
p
O
2
(sample,upd30)
−
p
O
2
(sample,upd.24)
⏐≤
0.05
×
p
O
2
(sample,upd.30).
Error message "Measurement unstable" (=
p
O
2
response fault during electrode
monitoring in Expired air mode) is displayed if the stability criterion is not
fulfilled.
2-11
Содержание ABL800 FLEX
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