Page 2-10 248 Operator’s Manual
Calibrating the Barometer
The adjustment range for the barometer is the displayed value ± 20 mmHg.
Recalling Last Sample Data
The 248 retains the data for the last sample measured. The Data Recall
menu allows:
• data to be recalled,
• patient data to be entered or changed,
• results to be printed.
1. From Ready press # for menu, 4 for Data Recall and 1 for Last Sample
Data.
2. Press 1 to recall the results Screen 1 to the display. (The calculated
parameters are also recalled, press # to see Screen 2.)
3. Press 2 if you want to enter or change the patient data. You can enter
patient and operator ID, and patient temperature, ctHb and F
I
O
2
.
You can enter up to 12 digits for operator and patient ID. You can use
the decimal point to insert dashes.
The other values that can be entered are:
• patient temperature 10.0 - 43.9°C
• ctHb 2.0 - 25.0 g/dL (20 - 250 g/L or 1.2 - 15.5 mmol/L)
• F
I
O
2
15.0 - 100.0%.
The 248 will use these values for recalculating the results. If you do not enter
patient data the 248 uses the values entered previously, or if none were
entered normal (default) temperature (37°C), ctHb (15 g/dL (150 g/L, 9.6
mmol/L)) and F
I
O
2
(20.9%) are used, with the following exceptions:
•O
2
CT will not be reported unless ctHb is entered, and
•pO
2
(A-a) and pO
2
(a/A) will not be reported unless F
I
O
2
is entered.
4. Press 3 if you want to print the data. The printout shows the date and
time the sample was analyzed, not the time of recall.
→ Data Recall → Last Sample Data
1 View Results
2 Enter Patient Data
3 Print Data
press 1 - 3 or * to Exit
→ Calibration → Barometer
Enter atmospheric pressure
760 mmHg
press * to Exit
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