User manual

110 1260 Nanoflow Pump User Manual
8 Test Functions and Calibration
Micro Mode Pressure Test
Micro Mode Pressure Test
Description
This is a fast test to verify the tightness of a micro system, where the pump is
operating in Micro Mode and no manual purge valve is installed. The flow path
of the system which is tested for tightness is blocked by a blank nut. The
pressure is increased up to 380 bar and the remaining flow is measured with
the flow sensor while the system is blocked.
Step 1
The test begins with the initialization of both pump heads. Next, pump A
begins pumping solvent until a system pressure of 380 bar is reached.
Step 2
The pump is operating in the Pressure Control Mode at 380 bar for several
minutes. The remaining flow in the column flow path between the EMPV and
the blank nut is measured.
Running the Test from the Agilent Lab Advisor Software
1 Select the Micro Mode Pressure Test from the test selection menu.
2 Start the test and follow the instructions
CAUTION
Stainless steel blank nuts can damage the flow sensor.
➔ In step 10 of following procedure, use the PEEK blank nut from the accessories kit to
block the flow sensor outlet.
NOTE
For detailed instructions refer to the Agilent Lab Advisor software.