Cryogenic Liquid Composite Sampling Systems and Methods

A cryogenic liquid sampling device comprising:

• a chamber having affixed therein a sample pump configured to pull a cryogenic liquid sample from an external source;
• and
• an enclosure having
• a supply port configured to receive an input stream of a gas,
• an input port,
• a sample pump port configured to feed gas received at the supply port to the sample pump,
• an input/output port configured to feed gas received at the supply port to an external device,
• a vacuum device connected to the input port and configured to generate a vacuum within the chamber, and
• processing circuitry configured to control the vacuum device and the sample pump to perform transfer of a cryogenic liquid sample from the external source to an external device.

A method for sampling a cryogenic liquid comprising:

• applying gas to a constant pressure container to create a predetermined backpressure within the constant pressure container;
• creating, via a vacuum device, a vacuum within a chamber by pulling air from the chamber via a vacuum line;
• extracting, via a sample pump contained within the chamber, a cryogenic liquid sample from an external source and feeding the extracted cryogenic liquid sample through a speed loop;
• purging a sample line connecting the chamber and the constant pressure container;
• and
• directing at least a portion of the cryogenic liquid sample extracted by the pump to the constant pressure container.