Open AccessDevelopment of monitor system for parallel-type superconducting level sensor for liquid hydrogen
Author(s) -
Naoki Tanaka,
Kazuhiro Komori,
Hidetoshi Oguro,
M. Sugino,
Toru Nakanishi,
Itsuo Aoki
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1293/1/012041
Subject(s) - voltage , electrical engineering , liquid helium , isolator , central processing unit , power (physics) , materials science , computer science , engineering , electronic engineering , computer hardware , physics , atomic physics , quantum mechanics , helium
We develop a monitor system to control a parallel-type superconducting (SC) level sensor and to indicate the level of liquid hydrogen in a container. The parallel-type level sensor is composed of an MgB 2 wire and non-SC wire, which are vertically located in parallel and electrically connected in series. We assemble the monitor unit using a power supply, central processing unit (CPU), analog-to-digital (AD)/digital-to-analog (DA) converter, touch panel, voltage dividers and isolators. The terminal voltages of the MgB 2 wire and non-SC wire with a constant current produced by the power supply are stored in the memory of CPU through the isolators, voltage dividers and AD converter. The liquid level is calculated in the CPU according to a pre-written program code. The obtained result is displayed on the touch panel and also output externally via the DA converter and isolator. Furthermore, the normal operation of the developed monitor system is validated using dummy voltages from an oscillator.