Hach-Lange POLYMETRON 9240 Operator Manual - Manual (Page 94)

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User Setup
7.6.2 Channel activation
7.6.3 Sequence
7.6.4 Channel names
Using the Up and Down Arrow keys, define whether the
channel is active (Activ) or inactive (Inactiv).
The example shown left indicates an analyzer set up with
three channels, of which channel 2 is inactive.
The sequence defines the channel order in which samples are
measured.
Only configured channels can be used in the sequence. For
example for a 3-channel analyzer only values 1,2 and 3 are
available.
Up to 12 sequences can be defined. If a channel has been
deactivated, but is still in the sequence, it is simply ignored
and the next channel in sequence is measured.
The example shown left indicates a 4-channel analyzer with
each channel being measured in turn, starting with channel 1.
If there is no sample on a programmed channel, the analyzer
will detect this and after 3 minutes move on to the next
channel in sequence. The channel on which the sample is
missing will be assigned the alarm sample x flow < min
(where sample x is the name of the channel).
If the analyzer is stopped manually from the keyboard, it
restarts from the same place in the sequence.
In the event of a power failure, when restarted the analyzer
with start at the beginning of the sequence.
Define the name of each channel with free-format
alphanumeric text up to a maximum of 8 characters.