Nibp Calibration - GE Datex-Ohmeda S/5 Technical Reference Manual

4.7.2 NIBP Calibration

Active Leak Test: Wrap an adult cuff around a rigid
cylinder or pipe and connect the cuff to the module.
Select the active leak test (ON). The module
automatically pumps a pressure of 260 mmHg into
the cuff. Wait for several seconds until the pressure
stabilizes. Then check that the pressure reading
does not drop more than 6 mmHg per minute. If it
does, leaking point(s) should be detected and fixed.
Cancel the test by selecting the Active leak test OFF.
Calibration Check: After the calibration check is
selected (ON), the module zeroes the pressure
transducers at the beginning of the calibration
check. Do not pump pressure until the text
'Calibrating' appears in the NIBP digit field or the
zeroing will fail. After the zeroing is done, manually
pump pressure into the module and make sure that
the same pressure values are shown both on the
display and on the manometer. Pressure of both
pressure channels B1 and B2 are shown. The
pressure values are automatically zero-
compensated, so the readings of B1 and B2 should be the same as the manometer readings.
Protection: Software calibration protection (ON/OFF). Select
becomes available in the menu after pressing the NIBP module buttons
simultaneously for 3 seconds.
How to Calibrate
Calibration selection is available only when protection is OFF.
NOTE: Both channels B1 and B2 must be calibrated simultaneously.
NOTE: The module must be in the frame during the whole procedure.
NIBP calibration can be performed in the NIBP Service menu as follows:
1. If Protection is ON, change it to OFF by pressing the NIBP module buttons
and
Then press the buttons again for 3 seconds to enable Calibration.
NOTE: When the buttons have been pressed, the NIBP field shows an error message
'Calibration switch on!'.
NOTE: When calibration is enabled, a message 'Calibration not protected' appears.
2. For proper zeroing to take place, remove the hose from the front panel connector. Select
Calibration and push the ComWheel. Message 'Zeroing' will appear in the NIBP message
field. After this, a pressure bar will appear beside the menu and the text 'Calibrating' will
appear in NIBP digit field.
3. Connect an external mercury manometer with a pump to the module through both tubes
of the hose. Pump up to about 200 mmHg pressure (range of 150 to 300 mmHg allowed)
according to the manometer. Verify that both pressure values in the prompt field match
the manometer reading. If not, adjust by turning the ComWheel.
Start Cancel
simultaneously for 3 seconds, which enables the Protection selection.
OFF Protection
when calibrating.
Auto ON/OFF
Service Menu
selection
Start/Cancel
and
Auto ON/OFF
Document no. M1137266-02
33