进口持压泄压阀由主阀、泄压/持压导阀针阀、 、 球阀、微形过滤器和压力表组成水力控制接管系统。

A pressure relief valve from the main valve, pressure relief / holding pressure pilot valve needle valve, ball valve, micro shaped filter and pressure gauge hydraulic control over the system.

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在国内首次选用美国霍尼韦尔双法兰差压变送器智能表测量油水界面，用计算机实现闭环控制，取得满意效果。

It is the first time in China that a dual flange differential pressure intelligent meter of us Honeywell Co. make has been used for the measurement of oil water interface.

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方法：用真空负压表、延迟控制线路，接通电话机免提键、存储拨号键。

Methods The vacuum negative pressure meter and the delayed control line were used.

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