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首页> 外文会议>Annual Conference of the Society of Instrument and Control Engineers of Japan >Density measurement of pressure transmitting oil at high pressures up to 100 MPa by changing the vertical position of a precise pressure gauge
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Density measurement of pressure transmitting oil at high pressures up to 100 MPa by changing the vertical position of a precise pressure gauge

机译：通过更改精密压力表的垂直位置，可测量高达100 MPa的高压下的压力传递油的密度

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摘要

This paper presents a method of on-site density measurement of pressure transmitting medium at high pressures. The density is estimated by precisely detecting head differential pressure using a monitoring pressure gauge. A flexible pressure tube which is durable for high pressures is used to change the vertical position of the monitoring pressure gauge. We measured the density of dioctyl sebacate, which is commonly used as hydraulic pressure transmitting oil for pressure calibrations. The estimated density was almost similar to the previously reported value at low pressures, but became smaller by approximately 1 % at 100 MPa. This method is applicable to other pressure transmitting medium, which are being used at calibration laboratories and industries without accurate density values at high pressures, and will help users to estimate head differential pressure more accurately.
机译：本文提出了一种在高压下现场测量压力传递介质密度的方法。通过使用监控压力表精确检测压头差压来估算密度。耐高压的挠性压力管用于改变监控压力表的垂直位置。我们测量了癸二酸二辛酯的密度，癸二酸二辛酯通常用作压力校准的液压传递油。估计的密度几乎与先前在低压下报告的值相似，但在100 MPa时变小了约1％。该方法适用于在校准实验室和工业中使用的其他压力传递介质，这些介质在高压下没有精确的密度值，并且将帮助用户更准确地估计压头差压。

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