公开(公告)号：US06758096B1

公开(公告)日：2004-07-06

申请号：US09958958

申请日：2001-12-19

Applicant: Otmar Schön ,  Klaus Goebbels

Inventor： Otmar Schön ,  Klaus Goebbels

IPC: G01L1904

CPC classification number: F15B19/005 ,  F15B1/08 ,  F15B2201/205 ,  F15B2201/31 ,  F15B2201/3151 ,  F15B2201/411 ,  F15B2201/51

Abstract: A method monitors the gas prefill pressure in hydraulic accumulators. After the pressure supply to the oil side of the accumulator has been interrupted and the contents of the tank have been emptied, the current gas temperature and the current gas pressure are determined, once the temperature has equalized. The data relating to the gas temperature and pressure is telemetrically transmitted to an evaluation unit, which is spatially located at a distance, to calculate an actual value of the gas prefill pressure which corresponds to a reference temperature.

Abstract translation: 一种方法监测液压蓄能器中的气体预填充压力。 在蓄能器的油侧的压力供应中断并且罐的内容物已经排空之后，一旦温度相等，就确定当前的气体温度和当前的气体压力。 与气体温度和压力相关的数据被遥测地传送到空间上位于一定距离处的评估单元，以计算对应于参考温度的气体预充气压力的实际值。

公开(公告)号：US4026157A

公开(公告)日：1977-05-31

申请号：US667940

申请日：1976-03-18

Applicant: Klaus Goebbels

Inventor： Klaus Goebbels

IPC: G01N15/02 ,  G01N29/11 ,  G01N29/00

CPC classification number: G01N29/11 ,  G01N15/02 ,  G01N2291/0289

Abstract: A method of quantitatively determining the grain size of substances comprs introducing ultrasound of two different frequencies and measuring the sonic pressure amplitudes of both frequencies, determining the attenuation coefficients from these measurements for both frequencies and finally calculating the value of a.sub.4.

Abstract translation: 一种定量测定物质粒度的方法包括引入两个不同频率的超声波，并测量两个频率的声压级，从这两个频率的这些测量中确定衰减系数，最后计算a4的值。