DOC-0128 Rev F
© 2017 DROPLET MEASUREMENT TECHNOLOGIES
4 2
8.2.2
Flow Calibrations Procedure
8.2.2.1
Sample Flow Calibration
For each column, complete the following steps.
1)
Connect the flow meter to the flow inlet.
2)
Close the sheath flow metering valve (Figure 26) for the column you are working with.
Figure 26: Sheath Flow Metering Valves
3)
In the Dual CCN.exe software, click on the
DMT Service
tab. Click just below the text window
in the middle of the screen. In the white text box that appears, type in the password
Service
.
Then select the
Flow Calib.
sub-tab.
4)
Change
Sample Flow y-int
to 0 and
Sample Flow slope
to 1.
5)
Go to the
Flows
tab on the CCN-200 control window and turn on the
Manual Override
button.
6)
Using the
Valve Set M (V)
field,
adjust the valve voltage until the sample flow as measured
on the external flow meter (
not
on the computer display) is in the range of 20-75 vccm.
