Roche Diagnostics May 2009
Service Manual · Version 9.0 A-41
cobas b 221 system 2 Fluid actions
Calibration
CAL 1 Calibration
This procedure determines the sensitivity of the sensors. CAL 1 is aspirated into the
MSS measuring chamber from the S3 Fluid Pack A through a metal pipe in the
sample distributor and valves V20 and VSI and measured. The positioning is checked
by conductivity measurements.
A MSS output pump
B V20
C Waste separator
D Calibration solution CAL 1
Figure A-24
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