Abstract
The difference between the dielectric constant of the liquid and gaseous phases of a substance can be and has been used1,2 to indicate the height of the liquid in a container. The change of capacitance of a vertical plate capacitor with level of liquid between the plates can conveniently be employed. The circuit given will indicate a very small change of capacitance and is ideal for this purpose. For a change of 30 micro-microfarads in about 450 the change of cathode current in the 6L6 is approximately 2.5 milliamperes.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
S. C. Coroniti, Electronic Liquid Level Indicator, Rev, Sci. Instr. 13, 484 (1952). Coroniti applied a device similar to the one described to both electrolytic and non-electrolytic liquids at normal temperatures.
W. E. Williams, Jr. and E. Maxwell, Liquid Level Indicator for Condensed Gases at Low Temperatures, Rev. Sci. Instr. 25, 111 (1954).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1960 Plenum Press, Inc., New York
About this paper
Cite this paper
Braudaway, D.W., Schwartz, S.B., Allen, J.W. (1960). A Sensitive Electronic Liquid Level Indicator for Condensed Gases. In: Timmerhaus, K.D. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 1. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-3099-8_24
Download citation
DOI: https://doi.org/10.1007/978-1-4684-3099-8_24
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-3101-8
Online ISBN: 978-1-4684-3099-8
eBook Packages: Springer Book Archive