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4.8.3.10.3 Calibration Blood Leak Detector
Close front and rear door for the calibration to prevent light irradiation on the
sensor. Air and micro-bubbles must not be present prior or during the
calibration of the blood leak detector (if necessary rinse, see information
4.8.3.10).
The blood leak detector must be clean.
FPA
must be switched off to prevent a flow during the calibration procedure.
The calibration of the blood leak detector type 2 is performed in two steps:
•
Turbidity calibration
•
Calibration with reference solution
You can skip directly from the test menu to the calibration menu of the blood
leak detector by pressing the
key.
The calibration procedure may take some time and requires stable values.
Slight fluctuations due to air bubbles inside the blood leak detector during the
calibration process can lead to an abortion of the calibration.
•
Reference solution (red dye, art. no. 7700911)
•
Graduated cylinder 2 litre
1.
Both dialyser couplings are connected to the rinsing bridge.
2.
Prepare 1 ‰ reference solution, i.e.:
Dilute the flask of 2 ml of red dye with 2 litre deionised/RO water. The
water should have at least 30
o
C for an accurate calibration. Mix the
reference solution thoroughly.
4.8.3.10.3.1 Turbidity Calibration with
Water
3.
Press
key. The calibration window is opened.
4.
Set
FPA
slowly to zero.
5.
Press the
key to activate the first calibration point of the
automatic calibration.
The values must be in the following limits:
Actual
Status
Controller
Actual Status
Supervisor
Blood Concentration
[‰]
-50 to +50 digits
205 to 230 digits
After the calibration of the first point the second calibration point is
automatically displayed.
4.8.3.10.3.2 Calibration with Reference
Solution (Red Dye)
6.
Carefully pull off the red dialyser coupling from the rinse bridge to
prevent any loss of fluid/air-intake and immerge it into the container
with reference solution.
7.
Set
FPA
slowly to 1000 rpm and draw-in approx. 1 l reference solution.
8.
Set the
FPA
slowly to zero. If the displayed actual blood concentration
value of the controller is stable, press the
key to
confirm.
The displayed actual blood concentration value must be in the following
limit, to ensure a sufficient resolution:
Actual
Status
Controller
Blood Concentration [
‰
]
> 200
9.
Confirm and store completed calibration procedure with
key.
