Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1979-10-23
1981-07-21
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73706, 73719, G01L 1904
Patent
active
042791600
ABSTRACT:
A pressure measuring apparatus using process transmission media and comprising measuring and compensation systems. These systems have the substantially same construction which comprises a pressure receiving portion, a pressure transmitting portion and a pressure detecting portion. The pressure transmitting portion is divided into two sections, each of them contains a liquid NaK and a heat-resisting inert liquid, respectively, as pressure transmission media. A pressure of a fluid to be measured which is introduced into the pressure receiving portion of the measuring system is transmitted through the transmitting portion to the pressure detecting portion where the pressure is detected. A pressure of a gas introduced into the pressure receiving portion of the compensation system is detected in the pressure detecting portion of the compensation system in a same manner. The temperature compensation is conducted by subtracting a detected pressure in the compensation system from that in the measuring system.
REFERENCES:
patent: 3286527 (1966-11-01), Schelten-Peterson et al.
patent: 3623371 (1971-11-01), Jullien-Davin
patent: 3956937 (1976-05-01), Lawford et al.
patent: 3986399 (1976-10-01), Satou et al.
Fukada Tomihiro
Kamei Mitsuru
Doryokuro Kakunenryo Kaihatsu Jigyodan
Woodiel Donald O.
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