Thermo Scientific Dionex, Руководство оператора

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3 • SP Sample Preparer Description
Doc. 065250-06 03/2020
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Analyzing a sample stream for dilution with the SP2 consists of three
main steps:
•
Step 1: Filling the loop on the metering valve with sample (see
Figure 3-24 ).
•
Step 2: Sending the loop contents and deionized water (the diluent) to
the dilution vessel. This step is also performed when the calibration
standard is analyzed (see
Figure 3-18 ).
•
Step 3: Purging the diluted sample from the dilution vessel and
loading it to the injection valve. This step is also performed when the
calibration standard is analyzed (see
Figure 3-19 ).
Figure 3-24. Analyzing Sample Streams: SP2 Dilution
Step 1: Filling the Metering Valve Loop with Sample
Standard
Check Standard
NC
C
NO
Sample in from
SS Sample Selector
ST
SV1
NC
C
NO
Metering Valve
1
2
3
5
7
9
4
6
8
10
To waste
Plug
To waste
Plug
To dilution vessel
To dilution pump
NC
C
NO
To SS valve
To waste
CS
SV3
SM
SV4
Valve Positions for Sample
Analyses: SP2 Dilution
ST/SV1 = Off
DI/SV2 = Off
CS/SV3 = Off
SM/SV4 = On
SS/SV5 = Off
DV/SV6 = Off
GAS/SV8 = Off
ME = 1–2