title: Resistive Liquid-Vapor Surface Sensors for Liquid Nitrogen and Hydrogen.
abstract: Ten resistance thermometers were tested as point sensors for detecting the liquid-vapor interface in liquid nitrogen and liquid hydrogen. Test results showed that most could be made to detect the liquid surface and lead orientation can be important. A silicon resistive sensor had the fastest response and produced the greatest signal change.
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80303.
authors.forename: J D
authors.initials: JD
authors.lastname: Siegwarth
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80303.
authors.forename: R O
authors.initials: RO
authors.lastname: Voth
authors.affiliation: National Institute of Standards and Technology, Boulder, CO 80303.
authors.forename: S M
authors.initials: SM
authors.lastname: Snyder
keywords: interface; liquid hydrogen; liquid nitrogen; liquid-vapor; resistance thermometer; surface sensor