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1. 发明授权

US4674316A Calibration system for mechanical gas volume corrector 失效
标题翻译：机械气体体积校正器校准系统
公开(公告)号：US4674316A
公开(公告)日：1987-06-23
申请号：US854263
申请日：1986-04-21
申请人： Charles W. Albrecht , Malcolm W. Cornforth
发明人： Charles W. Albrecht , Malcolm W. Cornforth
IPC分类号： G01F1/86 , G01F3/22 , G01F15/04 , G01F15/06 , G01F25/00
CPC分类号： G01F25/0053 , G01F15/046 , G01F15/06 , G01F3/224
摘要： A calibration system for a mechanical gas volume corrector which has a first shaft turned at a rate corresponding to the otherwise uncorrected volumetric flow rate through the meter, a second shaft, a variable ratio transmission coupled between the first and second shafts, and a mechanism for altering the ratio of the transmission in response to changes of a physical condition of the gas. The calibration system includes an arrangement for applying a representation of a reference state of the physical condition to the ratio altering mechanism, and indicator for indicating a fixed number of revolutions of one of the shafts, an arrangement for determining the number of revolutions of the other of the shafts corresponding to the fixed number of revolutions of the one shaft, and a calculator for determining and displaying the ratio of the other shaft revolution number to the fixed number. The calibration system also includes an adjustment mechanism for changing the zero setting and the span (or gain) of the ratio altering mechanism.
摘要翻译：一种用于机械气体体积校正器的校准系统，其具有以对应于通过仪表的另外未校正的体积流量的速率转动的第一轴，第二轴，耦合在第一和第二轴之间的可变比率变速器，以及用于响应于气体的物理状态的变化改变透射比。校准系统包括用于将物理条件的参考状态的表示应用于比率改变机构的装置，以及用于指示其中一个轴的固定转数的指示器，用于确定另一个的转数的装置对应于一个轴的固定转数的轴，以及用于确定和显示另一个轴转数与固定数的比率的计算器。校准系统还包括用于改变比例改变机构的零点设置和跨度（或增益）的调节机构。

2. 发明授权

US4390956A Apparatus for correcting measured gas flow 失效
标题翻译：用于校正测量气体流量的装置
公开(公告)号：US4390956A
公开(公告)日：1983-06-28
申请号：US241328
申请日：1981-03-06
申请人： Malcolm W. Cornforth , Robert S. Jacobsen
发明人： Malcolm W. Cornforth , Robert S. Jacobsen
IPC分类号： G01F1/86 , G01F15/02 , G01F15/04 , G01F15/075 , G01F1/00
CPC分类号： G01F15/0755 , G01F15/046
摘要： A gas flow volume corrector mounted on a flow meter is provided with a microprocessor which calculates a corrected volume each time the meter measures a unit volume of flowing gas. Customer supplied data as to base conditions, specific gravity and gas composition are utilized to calculate supercompressibility values. These values are then processed to provide a plurality of constants which define calculation equations. The constants are stored in the corrector on a diode matrix card or PROM and are utilized each time the meter measures a unit volume of flowing gas for calculating the corrected volume. To conserve memory space, integer arithmetic, rather than floating point arithmetic, is utilized in the calculations.
摘要翻译：安装在流量计上的气体流量校正器设置有微处理器，每当计量器测量流动气体的单位体积时，计算校正体积。客户提供的基础条件数据，比重和气体成分用于计算超压缩值。然后处理这些值以提供定义计算方程的多个常数。这些常数存储在二极管矩阵卡或PROM上的校正器中，每当仪器测量单位体积的流动气体以计算校正后的体积时，就会使用这些常数。为了节省存储空间，在计算中使用整数运算而不是浮点运算。

3. 发明授权

US4056717A Temperature correction systems for a fluid flow meter 失效
标题翻译：流体流量计的温度校正系统
公开(公告)号：US4056717A
公开(公告)日：1977-11-01
申请号：US735861
申请日：1976-10-27
申请人： Malcolm W. Cornforth
发明人： Malcolm W. Cornforth
IPC分类号： G01F15/02 , G01G15/02 , G01F1/08
CPC分类号： G01F15/024
摘要： A conventional fluid flow meter provides a single pulse output signal for each uncorrected unit volume flow. A monostable multivibrator (MV) is triggered by said meter signal and provides a gating signal for a 1 MHZ oscillator to produce a pulse train. A temperature sensor senses the fluid flow at the meter and controls the monostable MV so that the number of pulses in said pulse train is inversely proportional to the absolute temperature of the fluid flow. A preset down counter derives from said pulse train a number representing the absolute temperature at the sensor. A burst generator generates a fixed number of pulses related to a predetermined base temperature. A divider divides said fixed number of pulses by said number representing the absolute temperature of the fluid flow and provides a single pulse output for each integer resulting from said division and stores the remainder from said division for use in the next division. A register accumulates the number of pulses resulting from said division and represents the corrected volume flow. The above calculation is completed in a small fraction of the time period between meter pulses. A solid state switch operates to supply power to said monostable MV and to enable said oscillator for a preset time period sufficient to permit said calculation to be completed. The switch then turns off the power supply and disables the oscillator until the next meter pulse occurs.
摘要翻译：传统的流体流量计为每个未校正的单位体积流量提供单个脉冲输出信号。单稳态多谐振荡器（MV）由所述仪表信号触发，并为1MHz振荡器提供门控信号以产生脉冲串。温度传感器检测仪表处的流体流量并控制单稳态MV，使得所述脉冲串中的脉冲数与流体流的绝对温度成反比。一个预设的下降计数器来自所述脉冲序列，代表传感器的绝对温度。突发发生器产生与预定基础温度相关的固定数量的脉冲。分压器将所述固定数量的脉冲除以表示流体流动的绝对温度的数量，并为由所述分割产生的每个整数提供单个脉冲输出，并存储来自所述分区的剩余部分用于下一个分割。寄存器累积由所述除法产生的脉冲数，并且表示校正的体积流量。上述计算在仪表脉冲之间的一小段时间内完成。固态开关操作以向所述单稳态MV供电，并使所述振荡器能够使预定时间段足以允许所述计算完成。开关然后关闭电源，并禁用振荡器，直到下一个仪表脉冲发生。

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