Metrohm 797 VA Computrace - Manual (Page 39)

2.7 Settings menu
797 VA Computrace – Software
27
Sample handling
Define the default settings of a connected used
automation unit.
Sample processor [ read only ]
Select the connected sample processor.
Time to change sample [ > 25 s ; 30 s ] (only with the 863
Compact VA Autosampler)
During that time, the rack is changed to the next
position and the needle is immersed into the sam-
ple solution. It is the time between first and sec-
ond remote signal that are sent from 797 Com-
putrace to the Autosampler (see 863 Manual).
Sample transfer time (s) [ > 20 s ; 300 s (with 863) / 9999 s
(with 838) ]
With 863 : Time to transfer the sample solution
from the sample vessel to the measurement vessel
using the peristaltic pump of the 863 Compact VA
Autosampler.
With
838 : During that time the 797 Computrace
waits for an incoming signal (Handshake) from the
838 Advanced Sample Processor. That signal indi-
cates that the sample has been changed
and
transferred to the measuring vessel.
Working method source [ use sample table, repeat current
method ]
Define the sample sequence. With use sample ta-
ble , the working method can be defined individu-
ally for each sample. With repeat current method
the current working method is taken for all sam-
ples.
Delay next sample
Define the waiting period between measuring two
samples.
Repeat sample table, delay (h) (only applicable with use
sample table )
Check the checkbox if you want to repeat the
sample sequence, and define the waiting period.
Number of samples (-1 for infinity) (only with repeat cur-
rent method )
Define the number of samples you want to meas-
ure.
Purge and stir during sample transfer
Check the checkbox if you want to purge the
sample during transfer to the measurement vessel.
Dose auxiliary solution via sample processor
If you want to add solutions via Dosinos con-
nected to the 838 Advanced Sample Processor,
this box
must be checked to ensure the operation