Spectroscopy Cooling System Pourfill Dewars
The Liquid Pourfill Dewar is designed for the spectroscopist seeking
the advantages of cryogenically cooled samples. This system allows sample
cooldown from room temperature to 77K in less than ten minutes. Optical
access is provided through two windows mounted on the Vacuum Shroud and
the sample can be rotated with respect to the optional window.
The base sample temperature is obtained by the cryogen used to fill the
reservoir. When using the Variable Temperature Pourfill Dewar, a range
of test temperatures is then obtained using a control system consisting
of a temperature reading diode (cold head mount) and a controller to vary
the heater output to arrive at the desired sample temperature(s).
The Pourfill Dewar sample cooler interfaces with a wide variety of sample
mounts, vacuum shrouds and accessories to provide a versatile tool for the
spectroscopist, material research analyst or engineer.
Electrical signals can be obtained through a hermetically sealed 26-pin
connector. For high frequency and low noise requirements, either coaxial
or triaxial connectors are an option. An optional compression interlock
accessory may be ordered for fiber optic access.
Standard System Products
When a Pourfill Dewar, Fixed or Variable, is to be ordered the following standard parts would be included as components of the system, unless custom applications determine differently:
