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本文介绍了作者研制的水柱式气动量仪的工作原理、指示压力与测量间隙之间的关系,气动放大倍率及共调整原理、仪器的总放大倍率;最后介绍了重锤式稳压器的工作原理。本文最后介绍了本仪器的主要精度指标,指出它的主要误差是非线性误差,而且随放大倍率的减少而显著增加.但由于本仪器的主要测量参数是流速,指示压力很低,在测量段上非线性误差很小。本文最后指出本仪器的精度与放大倍率的关系。本文曾经1978年10月在汽车学会第二届年会宣读。
This paper introduces the working principle of the water column pneumatic instrument developed by the author, indicating the relationship between the pressure and the measurement gap, the pneumatic magnification and the total adjustment principle, the total magnification of the instrument. Finally, the work of the hammer-type regulator principle. At the end of this paper, the main accuracy index of this instrument is introduced, the main error of which is pointed out as non-linear error and it increases significantly with the decrease of magnification.But because the main measurement parameters of this instrument are the flow velocity and the indicated pressure, Non-linearity error is small. Finally, this paper points out the relationship between the accuracy of this instrument and magnification. This article was read in October 1978 at the second annual meeting of the Automotive Society.