BUCHI KjelSampler K-377 - Manual (Page 83)

6 Operation
83 K-375/376/377 Operation Manual, Version B
6 .6 .4 Sequences
The Sequences button is only available if an auto sampler is present and configured under
Device  Settings  Peripherals  Sampler present
If the sampler has been installed and prepared properly, a sample series to be determined with a
one- or two-tray sampler can be defined and pre programmed via a sequence.
A sequence contains a number of steps defining the samples itself and the necessary system tasks
like preheating, priming, aspiration etc.
The following types of steps may be used within a sequence:
Step Explanation
Preheating The preheating procedure is performed according to the settings under
System Preparation  Preheating
Priming The priming procedure is performed according to the settings under
System Preparation  Priming
Rack 4 Enter the sample details for a four-place express rack. For a 2-tray sampler the tray position (A or
B) can be selected using the
SETTINGS button within the step.
This step can be edited within the sequence.
Rack 12 Enter the samples for a 12 place rack. For a 2-tray sampler the tray position (A or B) can be
selected using the
SETTINGS button within the step.
This step can be edited within the sequence.
Rack 20 Enter the samples for a 20 place rack. For a 2-tray sampler the tray position (A or B) can be
selected using the
SETTINGS button within the step.
This step can be edited within the sequence.
Pause The sequence is stopped until it is continued by pressing Start.
This step cannot be changed.
Cleaning The cleaning procedure is performed according to the settings under
System Preparation  Cleaning
Aspiration The aspiration procedure for the sample tube and the receiving vessel is always performed, unless
the aspiration parameters of the referenced method are set to
No. (In this case the sample determi-
nation will stop after the determination of the sample with the corresponding method.)
Dose H
3
BO
3
This step is thought for the protection of the electrode. 50 mL of boric acid are dosed to the
receiving vessel to keep the electrode immersed during non-usage of the instrument.
This step cannot be changed.
Standby The device is sent to Standby mode.
This step cannot be changed.
NOTE
The order of the steps can not be changed once they have been added to the sequence, but steps
can always be deleted and added again in a different order. The tasks Preheating, Priming, and
Cleaning are always performed “via sampler”, if used within a sequence. Even if those tasks are set
to “unit only” within the area “System Preparation” , this setting will be omitted.
Once started, all samples within a sequence are determined automatically one by one in the working-
order of the sampler. Each sequence will be deleted from the sequence list the following day, in case
all samples have been determined properly. Sequences containing faulty samples will not be deleted.