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图示为“气动双法兰差压变送器”测量液体比重的示意图。图中:P_1为正压室压力(当γ_(min)=1时);P_2为负压室压力(当γ_(min)=1时);P_0为大气压或工作压力;ΔP_1为差压(当γ_(min)=1时);γ_(min)为被测液体的最小比重;γ_(max)为被测液体的最大比重;P_(10)为正压室压力(γ_(max)=2时);P_(20)为负压室压力(当γ_(max)=2时);γ_0为变送器毛细管内所充液体比重;H为变送器正压室法兰安装线至液位高度;h为正、负压室法兰安装线之间高度差。
Pictured as “pneumatic dual flange differential pressure transmitter ” a schematic diagram of measuring the proportion of liquid. P_ is the atmospheric pressure or the working pressure; ΔP_1 is the differential pressure (when the value of γ_ (min) = 1); P_2 is the pressure in the negative pressure chamber (min) is the minimum specific gravity of the liquid to be measured; γ max is the maximum specific gravity of the liquid to be measured; P 10 is the pressure of the positive pressure chamber when γ max = 2 ); P_ (20) is the negative pressure chamber pressure (when γ_ (max) = 2); γ_0 is the proportion of liquid filled in the transmitter capillary; H is the transmitter positive pressure chamber flange mounting line to the liquid level ; h is positive and negative pressure chamber flange installation height difference between the lines.