| 摘要 |
FIELD: physics. ^ SUBSTANCE: methods and device use the principle of expansion of a liquid in order compensate for temperature changes and increase accuracy of measuring strain. In certain embodiments, the methods and device use several chambers containing liquid. A first liquid having a first coefficient of thermal expansion is used between an outer case and a reinforced inner case, as well as a second liquid having a second coefficient of thermal expansion inside the reinforced inner case. The second coefficient of thermal expansion is different from the first. ^ EFFECT: less temperature dependency when measuring pressure and strain. ^ 21 cl, 9 dwg, 1 tbl |
