Accurate and reliable dynamic pressure measurements are needed for optimizing performance in modern combustion engines, manufacturing processes and aerospace applications. Besides fast pressure transients, these applications subject dynamic pressure transducers to elevated temperatures. Both of these quantities effect the sensitivity of transducers. Therefore, transducers should be calibrated at conditions that corresponds to the operating environment. To answer these needs, the National Metrology Institute VTT MIKES has developed its drop weight dynamic pressure primary standard further. Developments include improved control and measurement of the falling weight, extension of the pressure range to combustion engine pressures down to 3 MPa and a heating option for dynamic pressure transducers under calibration. These advances enable traceable calibration of cylinder pressure transducers at conditions relevant to engine applications. The overall uncertainty ( k = 2) o...

中文翻译：

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气缸压力传感器可追溯校准的进展

需要精确而可靠的动态压力测量，以优化现代内燃机，制造工艺和航空航天应用中的性能。除了快速的压力瞬变，这些应用还使动态压力传感器承受高温。这两个量都会影响传感器的灵敏度。因此，应在与操作环境相对应的条件下对传感器进行校准。为了满足这些需求，美国国家计量学院VTT MIKES进一步开发了其重量动态压力基本标准。发展包括改进的控制和下落重量的测量，将压力范围扩展到低至3 MPa的内燃机压力以及在校准下为动态压力传感器提供的加热选件。这些进步使得可以在与发动机应用相关的条件下对气缸压力传感器进行可追溯的校准。总体不确定性（k = 2）o ...