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CB / CB-UL, CBF / CBF-UL (E7) 07/2021 Page 89/197
9.7.4 Setpoint entry
• Select the field “Temperature” and enter the desired temperature setpoint.
Setting range: 20 °C up to 60 °C.
Confirm entry with Confirm icon. The controller returns to the section view.
• Select the field “CO2” and enter the desired CO
2
setpoint.
Setting range: 0 vol.-% up to 20 vol.-%.
Confirm entry with Confirm icon. The controller returns to the section view.
Chamber with O
2
control:
• Select the field “O2” and enter the desired O
2
setpoint.
Setting range with regular hypoxic control range: 0.2 vol.-% up to 20 vol.-%.
Setting range with alternative control range: 5 vol.-% up to 95 vol.-%.
Confirm entry with Confirm icon. The controller returns to the section view.
CBF / CBF-UL:
• Select the field “Humidity” and enter the desired humidity setpoint.
Setting range: 50 % r.h. up to 95 % r.h.
Confirm entry with Confirm icon. The controller returns to the section view.
9.7.5 Tolerance range
You can specify tolerance ranges for temperature, CO
2
and O
2
(chamber with O
2
control) and humidity
(CBF / CBF-UL) for each program section with different values for the tolerance minimum and maximum.
When the actual value exceeds the given threshold, the program is interrupted. This is indicated on the
display (see below). When the actual temperature is situated again within the entered tolerance limits, the
program automatically continues. Therefore, the duration of the program may be extended due to the
programming of tolerances.
Programming of tolerances may extend program duration.
An entry of “-99999” for the tolerance minimum means “minus infinite” and an entry of “999999” for the
tolerance maximum means “plus infinite”. Entry of these values will never lead to program interruption. The
entry of “0” for the tolerance minimum and/or maximum deactivates the respective tolerance function.
When requesting rapid value transitions, we recommend not programming tolerance values in order to
enable the maximum speed for heating-up and CO
2
/ O
2
control, and humidification.
Section view, showing the temperature tolerance
band
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