Maintenance and Calibration
Performing a Flow Calibration
Thermo Fisher Scientific
PDM3700 Instruction Manual
5-37
Figure 5–52.
Flow calibration orifices
Figure 5–53.
Black orifice installed in sample line and flow meter tubing
16.
When in the Warning/Confirmation screen with an “Attach orifice”
message, select the “OK” button. The Flow Calibration screen will
display with the Pump Speed white box active.
17.
Do Not adjust the pump speed. Enter the Orifice 1 flow rate from the
flow meter (typically 2.0 lpm).
18.
Select the “Apply” button. The PDM3700 unit will continue the flow
calibration routine and will display a “Please wait, gathering data”
message on the Calibrate/Audit screen.
19.
A Warning/Confirmation screen will display with a “Attach red orifice
inline between flow meter and sample tube” message.
20.
Remove the black orifice from the sample line and flow meter tubing.
21.
Install the red orifice into the sample line then install the other end of
the orifice into the tubing that is attached to the flow meter (
Figure 5–
54
).
