ScreenMaster RVG200
Paperless recorder 7 Configuration
108 OI/RVG200-EN
7.9.6 F0 (sterilization optimization) configuration
Calculation
The recorder's F0 standard sterilization calculation is based on Ft @ T of 121.1 °C and Z of 10 °C where
Ft = equivalent sterilization time of the sterilization procedure under temperature (T) conditions with a given
Z value.
The recorder also adjusts Ft to compensate for changes in temperature in order to achieve a constant
sterilization affect. The value used is D; a time value with a default setting of 1 minute.
The F0 algorithm used by the recorder is:
The result of the F0 calculation is displayed in minutes in the Digital Indicator view (see Fig. 4.6, page 31)
and in the Totalizer log (see Fig. 4.10, page 35).
Note.
The totalizer tabs are displayed only if the totalizer option is enabled.
F0 configuration is applicable only to analog totalizers.
Current F0 values are displayed in the Indicator view – see Section 4.5.2, page 31 (Operation) and
Section 7.8.3, page 84 (Configuration), respectively.
Only totalizer A on all recording channels can be configured to display an F0 value. If totalizer A is
configured to display an F0 value, totalizer B on the same channel is disabled automatically.
Totalizer A
Setup
Mode Set to F0.
Wrap enable If Wrap enable is set to On, the total is reset automatically to the Preset
count
value once the Predetermined count value is reached.
If Wrap enable is set to Off, the count stops when the Predetermined count
value is reached.
Note. A wrap pulse, with a duration of 2 seconds, occurs if the total
reaches the Predetermined count value and Wrap enable is set to On.IfWrap
enable
is set to Off, the wrap pulse becomes active when the
Predetermined count value is reached and remains active until the F0 value
is reset. The pulse can be assigned to a relay, digital output or digital
counter.
F
0
SampleTime 10
T 121.11 Z –
60 F
0
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