CompactGC manual
20
Sequence
This command is used in combination with the ‘reset sequence counter’
command in the next column of the table, which allows a certain action only to
be executed at a selected run number in a sequence. By resetting the sequence
counter, a loop is created, that is repeated every time. F.i. in a sequence of 10
analyses, only at run number 1 (needs to be entered in this particular column), a
selection valve is actuated for calibration purposes. Another application is stream
selection.
Command
The following actions can be selected in this column:
T set
The temperature of the available devices can be altered with
this command on time base
FP
set
This command allows you to change flow and pressure settings
during the run
Valve
This command is used to activate the external events, mostly
valves. Since up to 8 events can be connected, also the valve
number has to be entered.
Output
bit
The output bit command programs the state of the additional
8-bit parallel output. In case of another data than EZChrom
®
,
this command is used to start the data-acquisition. See
appendix 2.
Start chromatogram
In case of digital data connection to EZChrom
®
, this command
starts the data-acquisition. The use is mandatory in this case.
Autozero detector
During the run, the detector output signal is set to zero using this
command. Note that this action takes time, and no peaks are
allowed to elute during the autozero process.
Detector gain/range
During the run, the detector input sensitivity can be changed in
order to detect both high and low concentration peaks in the
same sample. This action takes time, so no peaks are allowed
to elute during the switching process.