A method for calibrating cryogenic void fraction RF-sensors having a round cross-section and estimating their accuracy. (October 2016)

• Record Type: Journal Article
• Authors: Filippov, Yu.P.; Kakorin, I.D.
• Is Part Of: Cryogenics. Volume 79(2016)
• Page Start: 63
• Page End: 73
• Publication Date: 2016-10
• Subjects: RF-sensor -- Void fraction -- Two-phase -- Helium -- Hydrogen -- Nitrogen -- Calibration errors; Low temperature engineering -- Periodicals; Low temperature research -- Periodicals; 536.56
• DOI: 10.1016/j.cryogenics.2016.07.015
• Languages: English
• ISSNs: 0011-2275

Abstract

Highlights: A calibration procedure of the void fraction RF-sensor is presented. A test bench for calibration is described. Errors of calibration and measurement are estimated. Comparison calculated errors with measured is presented. Abstract: The calibration principle of the cryogenic void fraction RF-sensors of a round cross-section for a wide temperature range is proposed and described in detail. It is shown that the simplest and reliable method of the calibration procedure requires finding a dependence of the resonant frequency, f, of the empty sensor on its temperature and only two f -values when it is filled with saturated liquid and vapor at the given temperature T 0 . The calibration test-bench is described. The errors of the calibration are estimated, and the experimental data for helium, hydrogen and nitrogen are presented.