Metrohm 875 KF Gas Analyzer - Manual (Page 29)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4 Operation
￭￭￭￭￭￭￭￭ 21
Gas type
Designation of a sample (substance or substance mixture), such as buta-
diene or propane, selected from the drop-down bar. The gas type is linked
to the calibration factor that is stored under the same name as common
variable.
Sample number
Sample ID used to identify your sample. The designation may be changed.
It is also possible to assign further sample identifications. These must be
created in the method and in the sample table.
Minimum sample amount
Valve 2 closes after the amount of sample entered in this field has been
fed in.
Sample infeed is only completed after the sample contained in the area
upstream of the regulator has flowed out.
Recommended range: approx. 1,000 to 2,500 mg, depending on the
water content.
First sample measurement?
(yes/no)
Enter yes here in the case of the first measurement after a gas bottle has
been connected. In this case, the feed line is rinsed with sample first.
Disconnect gas container after measurement?
(yes/no)
Enter yes here if you would like to disconnect the gas bottle after the
measurement. The pressure is then released from the feed line via valve 1
in a controlled manner after the analysis and the feed line is subsequently
rinsed with nitrogen.