Analytical instruments, methods, and components
Variable temperature analytical instruments and components are provided that can include: first and second conduits both configured to receive fluid from a cryofluid source and provide same to an analysis component; and a housing about the conduits wherein the housing is configured to maintain a vacuum about the conduits. Methods for maintaining temperatures within variable temperature analytical instruments are also provided. The methods can include dynamically providing fluid from a cryofluid source through at least one of two conduits housed within a vacuum, to an analysis component.
1. A liquefier analytical component interface of a variable temperature analytical instrument, the interface comprising:
at least one manifold configured to receive cryofluid from a liquefier;
first and second conduits operatively engaged with the manifold and configured to convey cryofluid from the manifold, wherein a resistance to flow of the first conduit is less than the resistance to flow of the second conduit; and
a third conduit extending from a second manifold to an analysis component, wherein both the first and second conduits are in fluid communication with the third conduit.
2. The interface of claim 1 further comprising a first mass thermally engaged with the first conduit.
3. The interface of claim 2 wherein the first mass is arranged along the first conduit between the first manifold and the second manifold.
4. The interface of claim 3 wherein the first mass and second manifold are thermally separated.
5. The interface of claim 2 wherein the first mass is configured to be temperature controlled.
6. The interface of claim 1 further comprising a second mass thermally engaged with the first conduit between the first mass and at least one second manifold.
7. The interface of claim 6 wherein the second mass is configured to be thermally connected to a stage of the liquefier.
8. The interface of claim 1 wherein the first conduit internal diameter is greater than the second conduit internal diameter.
9. The interface of claim 1 wherein the first conduit length is less than the second conduit length.
10. The interface of claim 1 further comprising a vacuum chamber housing the components of the interface under vacuum.