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    • 61. 发明授权
    • Digital device for automatically checking carbon content in metal with
reference to temperature stops on cooling curve
    • 数字装置,用于根据冷却曲线上的温度停止自动检查金属中的碳含量
    • US4088974A
    • 1978-05-09
    • US614532
    • 1975-09-18
    • Leonid S. ZhitetskyLeonid S. Fainzilberg
    • Leonid S. ZhitetskyLeonid S. Fainzilberg
    • G01R19/25G01N25/02G01N25/04G01N25/06G01N33/20G07C11/00G06F15/20
    • G01N33/203G01N25/04
    • According to the invention, the proposed digital device for automatically checking the carbon content in a metal with reference to the temperature stops on the cooling curves comprises a converter which converts the actual temperature of the metal into a numerical pulse code, said converter having applied to its input a signal carrying information on the metal's temperature, said converter having outputs consisting of code pulses corresponding to positive and negative temperature increments on the cooling curve; a reversible counter which converts the numerical pulse code into a parallel code, said reversible counter having its add and subtract inputs electrically coupled to the outputs of the converter; a clock pulse generator; a time interval discriminator whose code pulse inputs are electrically connected to the outputs of the converter, said discriminator's clock pulse input being electrically connected to the output of the clock pulse generator; a code storage register to store the codes corresponding to the temperature stops on the cooling curve, said register's information inputs being connected to digit outputs of the reversible counter, said register's control input being electrically coupled to an output of the time interval discriminator, a pulse being applied to said register at the moment when a temperature stop on the cooling curve is detected; and a digital display unit whose information inputs are electrically connected to digit outputs of the register.The device according to the present invention eliminates subjective errors which are bound to occur in any visual readout of data and makes it possible to fully automate the checking of the carbon content in a metal with reference to the crystallization temperature.
    • 根据本发明,提出的用于根据冷却曲线上的温度停止来自动检查金属中的碳含量的数字装置包括将金属的实际温度转换为数字脉冲代码的转换器,所述转换器应用于 其输入信号携带关于金属温度的信息,所述转换器具有由对应于冷却曲线上的正和负温度增量的代码脉冲组成的输出; 可逆计数器,其将数字脉冲代码转换成并行代码,所述可逆计数器具有电耦合到转换器的输出的加法和减法输入; 时钟脉冲发生器; 其代码脉冲输入电连接到转换器的输出的时间间隔鉴别器,所述鉴频器的时钟脉冲输入电连接到时钟脉冲发生器的输出; 用于存储对应于温度的代码的代码存储寄存器在冷却曲线上停止,所述寄存器的信息输入连接到可逆计数器的数字输出,所述寄存器的控制输入电耦合到时间间隔鉴别器的输出,脉冲 在检测到冷却曲线上的温度停止的时刻施加到所述寄存器; 以及数字显示单元,其信息输入电连接到寄存器的数字输出。
    • 63. 发明授权
    • Relative humidity computer
    • 相对湿度计算机
    • US3926052A
    • 1975-12-16
    • US46697774
    • 1974-05-06
    • JOHNSON SERVICE CO
    • BECHTEL JON HAROLD
    • G01N25/68G01N25/02
    • G01N25/68
    • Apparatus for measuring relative humidity within a given environment includes first and second operational amplifiers connected in a positive feedback loop. The first amplifier supplies an input signal to the second amplifier enabling the second amplifier to provide an amplified output signal which is fed back to an input of the first amplifier. First and second thermistors, which sense dewpoint and ambient temperatures, respectively, within the environment, control the gain of the second amplifier in accordance with changes in relative humidity to permit the second amplifier to provide an output signal which varies linearly with percent relative humidity.
    • 用于在给定环境内测量相对湿度的装置包括以正反馈回路连接的第一和第二运算放大器。 第一放大器向第二放大器提供输入信号,使得第二放大器能够提供被反馈到第一放大器的输入端的放大输出信号。 分别感测环境中的露点和环境温度的第一和第二热敏电阻根据相对湿度的变化来控制第二放大器的增益,以允许第二放大器提供与百分比相对湿度线性变化的输出信号。
    • 64. 发明授权
    • Method and apparatus for measuring the carbon potential in gas atmospheres
    • 用于测量气体大气中碳含量的方法和装置
    • US3693409A
    • 1972-09-26
    • US3693409D
    • 1970-10-12
    • TOKYO GAS CO LTD
    • YAMAGISHI KAZUO
    • C23C8/22G01N25/02
    • C23C8/22
    • A method and apparatus for detecting the carbon potential of a gas atmosphere within a heat-treatment furnace. A sample of gas atmosphere is extracted from the furnace and while cooling it the carbon deposit temperature is measured by a measuring element having of a carbon deposit detecting tip and a thermocouple adapted to be inserted directly into the furnace to measure the carbon deposit temperature of the said gas atmosphere. A temperature control means is connected with the carbon deposit detecting tip for changing the temperature of said tip, and a recorder is connected with said thermocouple for recording the temperature at which the tip detects a carbon deposit. The internal temperature of the furnace is measured, and the thus measured temperature values are used to determine the carbon potential.
    • 一种用于检测热处理炉内的气体气氛的碳势的方法和装置。 从炉中提取气体气体样品,同时冷却时,通过具有碳沉积物检测尖端的测量元件和适于直接插入炉中的热电偶测量碳沉积物温度,以测量碳沉积温度 说气体气氛。 温度控制装置与用于改变所述尖端的温度的碳沉积物检测端连接,并且记录器与所述热电偶连接,用于记录尖端检测到碳沉积物的温度。 测量炉的内部温度,并且由此测量的温度值用于确定碳势。