Improvement of the automatic temperature stabilisation process in the cryovacuum unit
https://doi.org/10.17586/2226-1494-2023-23-1-62-67
Abstract
This study concerns the issues of temperature stabilization in units used to research the properties of molecules at low and ultra-low temperatures. This research is relevant due to the need to increase the speed and accuracy of the data obtained. Using the LabView graphical programming environment tools, a control program was created for the LakeShore 325 thermocontroller which reacts when the current temperature is close to the control point temperature set by the researcher. By adding controls for the heating element power and PID controller boot times, it is possible to use them more flexibly. The method was verified for the temperature control points of 40 K, 100 K, 150 K and 200 K. A comparison of the proposed temperature stabilization program with the standard PID controller solution demonstrates the advantages of the former. The speed of reaching the control points was doubled. The digitalization of the LakeShore 325 thermocontroller makes it possible to work further on improving temperature stabilization. The resulting increase in the accuracy–time stabilization ratio makes it possible for those who conduct low-temperature experiments to improve the quality of their measurements dramatically. The introduction of a digital version of the temperature control device opens up possibilities for further automation of cryovacuum units by linking the thermal control program with other programs, for example, recording the spectra at specific temperature values.
Keywords
Supporting agencies: These studies have been carried out with the financial support of the Ministry of Education and Science of the Republic of Kazakhstan under grant AP08855681.
About the Authors
O. Yu. Golikov
Al-Farabi Kazakh National University
Kazakhstan
Kazakhstan
Oleg Yu. Golikov - Junior Researcher, Doctoral Student
Almaty, 050040
D. Yerezhep
Al-Farabi Kazakh National University
Kazakhstan
Kazakhstan
Darkhan Yerezhep - PhD, Senior Researcher
Almaty, 050040
D. Yu. Sokolov
Al-Farabi Kazakh National University
Kazakhstan
Kazakhstan
Dmitriy Yu. Sokolov - PhD, Associate Professor
Almaty, 050040
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Review
For citations:
Golikov O.Yu., Yerezhep D., Sokolov D.Yu. Improvement of the automatic temperature stabilisation process in the cryovacuum unit. Scientific and Technical Journal of Information Technologies, Mechanics and Optics. 2023;23(1):62-67. https://doi.org/10.17586/2226-1494-2023-23-1-62-67
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