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3.4 Maintenance
3.4.1 Checking of leak
Make sure whether or not there is any leak in the piping because of a loosened joint or
the like. When the standard gas injection port is disconnected and the upper part of the
collector tube is plugged up with a finger to stop the carrier gas supply, the flow rate should
decrease to approximately zero.
When the flow rate does not decrease, there is a leak because of the deterioration of the
septum, a loosened joint or the like.
After the checking of a leak, shift the plugging finger slowly.
If the tube is opened abruptly, the collection agent will spread in the
piping route, and a normal measurement will be impossible.
If there is a leak, check connection parts. If the leak persists even after retightening,
disconnect each joint in the piping route and plug it up with your finger to pinpoint the
leaking part.
Caution
