CPC G01N 1/14 (2013.01) [G01N 2001/105 (2013.01)] | 15 Claims |
1. A composite cryogenic liquid sampling system comprising:
a chamber having affixed therein a sample pump configured to pull a cryogenic liquid sample from an external source;
a separate enclosure having
a supply port configured to receive an input stream of a gas,
an input port connected to the chamber via a vacuum line,
a sample pump port connected to the chamber via a pump line and configured to feed therethrough the gas received at the supply port to the sample pump to control stroke timing thereof,
a vacuum device connected to the input port and configured to generate a vacuum within the chamber by pulling air from the vacuum line,
processing circuitry, and
an external composite liquid sample collection container connected by a sample input line to the sample pump in the chamber, and
an input/output port configured to feed gas received from the supply port to the external composite liquid sample collection container with a container line,
where the processing circuitry is configured to control the vacuum device and the sample pump to perform transfer of the cryogenic liquid sample from the external source to the external liquid sample collection container and for maintaining constant pressure within the composite liquid sample collection container to prevent phase change of the liquid sample during sampling by bleeding off excess pressure through the container line.
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