Water meter comprising a ferromagnetic magnetoresistor coupled to a
rotatable permanent magnet
    2.
    发明授权
    Water meter comprising a ferromagnetic magnetoresistor coupled to a rotatable permanent magnet 失效
    水表包括耦合到可旋转永磁体的铁磁磁阻电阻器

    公开(公告)号:US4253341A

    公开(公告)日:1981-03-03

    申请号:US33027

    申请日:1979-04-24

    CPC分类号: G01F15/0755 G01F1/075

    摘要: A water meter eliminates the usual conversion gear trains by using a permanent magnet which rotates in proportion to the volume of water to be measured. A magnetic field sensor, comprising a ferromagnetic magnetoresistor, produces a sensor signal which varies as a function of the rotation of the magnet. A wave shaper forms the sensor signal into a sequence of pulses which drive a totalizer for producing a signal indicative of the volume of the water used. The output of the totalizer is supplied to an indicator device which displays the total amount of water passing through the meter, in terms of a predetermined unit of measure. Preferably, the sensor comprises at least two magnetoresistors for producing two sensor signals with a phase difference therebetween. The wave shaper then produces two pulse sequences for identifying a normal and an inverse flow of water, respectively. These two sequences cause the totalizer to count up or down, respectively.

    摘要翻译: 水表通过使用与要测量的水的体积成比例地旋转的永久磁铁来消除通常的转换齿轮系。 包括铁磁性磁阻电阻器的磁场传感器产生作为磁体旋转的函数而变化的传感器信号。 波形整形器将传感器信号形成为脉冲序列,其驱动累加器以产生指示所使用的水的体积的信号。 累积器的输出被提供给指示装置,其以预定的测量单位显示通过流量计的水的总量。 优选地,传感器包括至少两个用于产生其间具有相位差的传感器信号的磁阻。 然后,波形整形器分别产生用于识别水的正常和逆流的两个脉冲序列。 这两个序列使得累加器分别向上或向下计数。

    Liquid meter comprising a circuit for reducing a detection error
resulting from a variable flow rate
    4.
    发明授权
    Liquid meter comprising a circuit for reducing a detection error resulting from a variable flow rate 失效
    液体计包括用于减少由可变流量引起的检测误差的电路

    公开(公告)号:US4306457A

    公开(公告)日:1981-12-22

    申请号:US94290

    申请日:1979-11-14

    CPC分类号: G01F1/125 G01F15/024

    摘要: A meter for a liquid, such as water, comprises a measuring circuit (55) for measuring those measuring periods in response to a detection pulse sequence resulting from rotation of a body (30) rotated by the liquid, each of which may be defined either by a period of one complete rotation of the body or a predetermined interval, such as six seconds. The circuit produces measurement signals representative of individual amounts of the liquid used with the individual amounts accompanied by detection errors resulting from a variable flow rate of the liquid. A totalizing circuit (61), which may comprise an ROM or consist of a microcomputer, totalizes the individual amounts with the detection errors reduced.

    摘要翻译: 用于诸如水的液体的仪表包括测量电路(55),用于响应于由液体旋转的主体(30)的旋转引起的检测脉冲序列来测量这些测量周期,每个测量周期可以被定义为 通过身体的一次完整旋转或预定间隔(例如6秒)。 该电路产生代表单独量的液体的单独量的测量信号,伴随着由液体的可变流速引起的检测误差。 可以包括ROM或由微型计算机组成的累加电路(61)将减少的检测误差的各个量进行累加。

    Method for removing sulfur dioxide from combustion exhaust gas
    5.
    发明授权
    Method for removing sulfur dioxide from combustion exhaust gas 失效
    从燃烧废气中除去二氧化硫的方法

    公开(公告)号:US3961021A

    公开(公告)日:1976-06-01

    申请号:US506721

    申请日:1974-09-17

    IPC分类号: B01D53/50 C01F11/46 B01D53/34

    CPC分类号: C01F11/464 B01D53/501

    摘要: Sulfur dioxide can be removed from a combustion exhaust gas and converted to gypsum by first scrubbing a sulfur dioxide-containing combustion exhaust gas with an aqueous alkali sulfite solution to form an alkali bisulfite-containing aqueous solution and then treating, within a closed system, the thus formed aqueous bisulfite solution with a calcium compound. The efficiency of the sulfur dioxide removal can be increased greatly by adding a portion of alkali sulfite aqueous solution circulating in the system to at least a portion of filtrate from the gypsum separation process to precipitate metallic ionic impurities contained in the filtrate in the form of salts and separate these salts by filtration, and then recirculating the filtrate from the salt separation process to the absorption system.

    摘要翻译: 可以从燃烧废气中除去二氧化硫并通过首先用碱金属亚硫酸盐水溶液洗涤含二氧化硫的燃烧废气以形成含碱式亚硫酸氢盐的水溶液,然后在封闭系统内处理 从而形成亚硫酸氢钙溶液与钙化合物。 通过将在系统中循环的一部分碱金属亚硫酸盐水溶液添加到来自石膏分离工艺的至少一部分滤液以使沉淀在滤液中的金属离子杂质以盐的形式沉淀,可以大大提高二氧化硫去除的效率 并通过过滤分离这些盐,然后将滤液从盐分离过程循环到吸收系统。