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BD 600_GB_1 08/2015
5.6 Options
The settings for further submenus, such as ‚Date / time‘ or
‚Name heads‘ are saved in the respective submenu. If the
menu is exited with function key F1 (cancel), the old settings
take effect again. The new settings are permanently adopted
with function key F2 (adopt). Pressing the key brings you
back to the main menu.
The settings for further submenus, such as ‚Date / time‘ or
‚Name heads‘ are saved in the respective submenu.
5.6.1 Autostart
The device‘s autostart function can be switched on and off here. In order to ensure correct tempe-
rature adjustment of the samples, when autostart is activated the device waits until a slight pressure
drop in the bottle after start-up. This pressure value is taken as a start value for the later BOD calcula-
tion.
In this connection, a maximum wait time of approx. three hours is specified, after which the device
automatically uses the current pressure value, even if no pressure drop has been detected.
Use of the autostart function is not a substitute for proper temperature control of the sample before
the beginning of the measurement. If BOD samples are tested, whose temperature fluctuates greatly
from the setpoint temperature, an error in determining the BOD value arises due to the pressure
change.
5.6.2 Brightness
The background lighting for the display is adjusted here in 10% increments from 0% to 100%.
5.6.3 Contrast
The contrast for the display can be adjusted here in 10% increments from 0% to 100%.
5.6.4 Naming heads
An additional submenu can be opened with this menu item (Figure 15).
The rack is shown schematically in the middle. In Figure
15 no heads have been recognised at the measurement
positions 1 and 3, unlike the other heads. The head at mea-
surement position five is selected. The corresponding names
are next to the heads. The name can be changed with the
number keys, right arrow
►
, left arrow
►
and backspace.
The name of the selected head is saved with function key F2
(save). The head buttons can be used to switch between the
heads. Press function key F1 (back) to return to the ‚Options‘
menu.
Figure 14
Figure 15