| 摘要 |
In one exemplar embodiment, an electrical circuit for deriving an electrical signal representative of the square of the supercompressibility factor of natural gas by providing means for measuring the static pressure of the gas, multiplying the static pressure measurement by predetermined functions of pressure, temperature and specific gravity for a preselected range of operation and adding a predetermined constant factor, approaching unity, to the product of the pressure and functions of pressure, temperature and specific gravity.
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