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Estimation of Calibration Values of Quartz Bourdon-Type Pressure Transducers Using Various Gases
MAPAN ( IF 1 ) Pub Date : 2021-05-20 , DOI: 10.1007/s12647-021-00462-0
Hideaki Iizumi , Hiroaki Kajikawa , Tokihiko Kobata

Quartz Bourdon-type pressure transducers are used as a secondary standard for high-pressure precision measurements. Such a transducer's calibration value depends on the pressure medium. When employing a pressure transducer for precision measurements using high-pressure gases, the calibration value should be corrected depending on the gas used. Herein, we describe a method for correcting the transducer's calibration values based on the gas density. We evaluate the relationship between the level of variation of the calibration value and the density using six types of gases, at pressures up to 100 MPa. The level of variation was determined using the difference between the calibration values obtained when the device was oriented vertically upward and downward. The density of high-pressure gases was measured in situ by measuring the head differential pressure. The level of variation of the calibration value was proportional to the density, regardless of the gas employed. Thus, we demonstrated a method for correcting the calibration value. The uncertainty of the correction was found to be sufficiently smaller than that of the calibration value. Therefore, once the relationship is determined, the calibration value for any gas can be estimated from its respective density without a substantial increase in uncertainty.



中文翻译:

估算使用各种气体的石英波登型压力传感器的校准值

石英Bourdon型压力传感器用作高压精密测量的次要标准。这种传感器的校准值取决于压力介质。当使用压力传感器进行使用高压气体的精密测量时,应根据所用气体校正校准值。在此,我们描述了一种基于气体密度校正换能器校准值的方法。我们使用六种气体(最高压力为100 MPa)评估校准值变化水平和密度之间的关系。使用当设备垂直向上和向下定向时获得的校准值之间的差异来确定变化水平。通过测量压头差压就地测量高压气体的密度。不管使用哪种气体,校准值的变化水平都与密度成正比。因此,我们展示了一种校正校准值的方法。发现校正的不确定性充分小于校准值的不确定性。因此,一旦确定了这种关系,就可以根据其各自的密度估算任何气体的校准值,而不会明显增加不确定性。发现校正的不确定性充分小于校准值的不确定性。因此,一旦确定了这种关系,就可以根据其各自的密度估算任何气体的校准值,而不会明显增加不确定性。发现校正的不确定性充分小于校准值的不确定性。因此,一旦确定了这种关系,就可以根据其各自的密度估算任何气体的校准值,而不会明显增加不确定性。

更新日期:2021-05-20
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