Development of monitor system for parallel-type superconducting level sensor for liquid hydrogen

Naoki Tanaka, Kazuhiro Kajikawa, Hidetoshi Oguro, Makoto Sugino, Tsutomu Nakanishi, Itsuo Aoki

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


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 MgB2 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 MgB2 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.

Original languageEnglish
Article number012041
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - Oct 15 2019
Event31st International Symposium on Superconductivity, ISS 2018 - Tsukuba, Ibaraki, Japan
Duration: Dec 12 2018Dec 14 2018

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


Dive into the research topics of 'Development of monitor system for parallel-type superconducting level sensor for liquid hydrogen'. Together they form a unique fingerprint.

Cite this