(System) Pressure Test - Agilent Technologies 1260 Infinity II User Manual

7
Test Functions and Calibration

(System) Pressure Test

(System) Pressure Test

This Lab Advisor test uses different names depending on the firmware revision used: FW
N O T E
revision ≥ A.06.50: System Pressure Test
Description
The system pressure test is a quick built-in test designed to demonstrate the
leak tightness of the system. The test involves monitoring the flow profile
while the pump delivers against a blank nut. The result is presented as the
leak rate of the module and provides information about the leak tightness of
the system between the outlet valves of the pump and the blank nut.
The blank nut can be positioned anywhere between the purge valve of the pump and the
N O T E
detector inlet to pressure test the desired part of the system.
Blank nut placed at the outlet of flow cell
C AU T I O N
The applied pressure may cause permanent leaks or bursting of the flow cell.
➔
Step 1
The test begins with the initialization of both pump heads. After initialization,
the pump is starting the compression phase and the required flow rate is
constantly monitored and adjusted. The pump continues to pump until a
system pressure of around 600 bar is reached.
Step 2
When the system pressure reaches 600 bar, the pump continues to pump at a
flow rate that keeps the pressure constant. The flow that is needed to keep the
pressure constant is directly translated into a leak rate.
96
Never include the flow cell in the pressure test.
InfinityLab LC Series 1260 Infinity II Binary Pump User Manual