Arterial Pressure Transducer Calibr - Gambro AK 95 S Service Manual

Calibrations
Arterial Pressure Transducer Calibration
1. Connect the Gambro reference instrument
(together with a calibration tube set) to
the arterial pressure transducer on the
front of the AK 95 S, see fig. below.
2. Zeroset the reference instrument, wait for
stable reading.
3. Start the AK 95 S, enter the Service
menu and select Calibrations.
4. Select Transducers, External and
ARTERIAL PRESSURE TRANSDUCER
from the selection diagram.
5. Press to confirm the selected trans-
ducer.
6. Apply zero pressure by opening the three
clamps A, B and C on the calibration tube
set. Set the "REF SET" value on the
AK 95 to 0 mmHg.
7. Press to enter the setting.
START
8. If the lit
UF
STOP
the machine stores the offset for the
transducer in the EEPROM and updates
the checksum.
For the sensitivity calibration
(the slope):
Close clamp A. Apply a pressure of approx.
-500 mmHg, shown on the reference in-
strument. Close clamp B.
ART PR LOW
1.2 -550
9. Set the "REF SET" value on the AK 95 S
to the reading on the reference instrument
and press
10. Open clamp A and B, then close clamp A
again. Apply a pressure of approx. +500
mmHg, shown on the reference instru-
ment. Close clamp B.
6:6
key is pressed at this time
REF SET HIGH
-500 550
twice.
ART PR LOW
1.2 -550
11. Set the "REF SET" value on the AK 95 S
to the reading on the reference instrument
and press .
START
12. Press to load the calibration values
UF
STOP
into the EEPROM.
13. When the EEPROM storage is ready,
press to exit.
If a calibration error occurs:
• Try to do the calibration again.
• If the error occurs a second time:
Change the transducer and the transducer
board.
Report to your Gambro service representa-
tive the error message on the error dis-
play.
B
A
REF SET HIGH
+500 550
C
AK 95 / AK 95 S Service Manual
HCEN 9138 Rev. 10.2005