Zeroing The Manometer - Codman HAKIM Bedienungsanleitung

3. Adjust the manometer height so that the zero level of the manometer
and the fluid level in the water bath are at the same level (Figure A-5).
Manometer Zero
Level
Figure A-5
4.
Fill the syringe with saline solution using the syringe filter.
5.
Disconnect the filter from the syringe and reconnect the syringe to
the stopcock.
6. Turn the stopcock to isolate the valve from the manometer assembly,
connecting the syringe to the manometer (Figure A-6).
Figure A-6
7.
Refill the manometer using the 5 mL syringe.

Zeroing the Manometer

1. After refilling the manometer, turn the stopcock to connect the
manometer with the bath (Figure A-7).
Figure A-7
2.
Allow the water column in the manometer to fall. The water column
should stop at the zero level of the manometer (Figure A-5).
3.
If necessary, adjust the height of the manometer to bring the water
level in the manometer to the same level as the fluid in the water bath.
Test Procedure
1. Set the opening pressure of the CODMAN HAKIM Valve to
120 mm H O (1176 Pa). [Laboratory testing using ASTM test F647
2
has shown that the best correlation between manometer closing
pressure and dynamic opening pressure is at a setting of 120 mm
H O (1176 Pa)].
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2.
Reconnect the sterile valve to the sterile test apparatus. It is
recommended that this step be performed under water in the water
bath to prevent the reintroduction of air bubbles into the valve.
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