Simple Liquid Helium Pressure Transducer
- 1 May 1968
- journal article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 39 (5) , 719-722
- https://doi.org/10.1063/1.1683483
Abstract
A totally immersed capsule type pressure transducer has been developed for the study of critical velocities in liquid helium below the lambda point. The construction and operation of the pressure transducer is described. It can be made in a few hours using relatively simple laboratory construction techniques. Typically it has a sensitivity between 50 and 100 cps/mm He at a frequency of about 10 Mc/sec and at an ambient pressure of a few millimeters of mercury. Such a transducer is particularly useful in closed systems-liquid helium not at its vapor pressure- for accurate measurements of the absolute pressure and for measuring small pressure changes. The operation of the transducer spans the pressure range from a fraction of a micron to several atmospheres with increased sensitivity at the lower pressures.Keywords
This publication has 2 references indexed in Scilit:
- Density of Rotating He IIPhysical Review Letters, 1967
- Density, Coefficient of Thermal Expansion, and Entropy of Compression of Liquid Helium-3 under Pressure below 1.2°KPhysical Review B, 1966