Commissioning VEA
• The tube flow scan allows you to select specific tube(s) and perform a quick flow
measurement
• To run a tube flow scan:
– Select Tube Flow Scan from the VSC Device Menu
– Select the tubes for the desired tube flow scan
– Click Start
Tips:
• High flow values are generally caused due to leakage or a shorter tube compared to
other tubes
• Ensure the inserted length for the tube in the Module tab matches the actual length
• Block the tube completely at the sample point end and ensure zero flow when tube
flow scan is performed
• Ensure no leakage at any changeover point when using tube connectors
Commissioning VEA
• Transport time is determined by the length of the microbore tubes used on the
detector
• There is no provision for the user to adjust the transport time and no tube modelling
tool required for VEA
• The transport time is given in the table below for various tube lengths
Maximum Tube Length Longest Transport Time
30m [98ft] 40 seconds
40m [131ft] 46 seconds
50m [164ft] 53 seconds
60m [197ft] 60 seconds
70m [230ft] 67 seconds
80m [262ft] 74 seconds
90m [295ft] 82 seconds
100m [328ft] 90 seconds
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