公开(公告)号：US4902896A

公开(公告)日：1990-02-20

申请号：US47650

申请日：1987-05-08

Applicant: Glenn H. Fertig, Sr. ,  Adrian C. Billetdeaux

Inventor： Glenn H. Fertig, Sr. ,  Adrian C. Billetdeaux

IPC: A61M16/10 ,  G01N21/01 ,  G01N21/35

CPC classification number: G01N21/3504 ,  A61M16/104 ,  G01N2021/0168 ,  G01N2201/1211 ,  G01N2201/128

Abstract: An infrared fluid analyzer for the detection of end tidal CO.sub.2. The analyzer is comprised of an IR source that irradiates a chamber filled with gas. CO.sub.2 present in the chamber absorbs the IR radiation at a certain wavelength. An IR detector determines the amount of IR radiation passing through the chamber unabsorbed and produces a signal corresponding to the CO.sub.2 in the chamber. At predetermined intervals a zero gas is reintroduced into the chamber for the system to be recalibrated. A span gas is only needed initially for calibration purposes.

Abstract translation: 用于检测尾气CO2的红外流体分析仪。 分析仪由辐射充满气体的室的IR源组成。 存在于腔室中的CO 2以一定波长吸收IR辐射。 IR检测器确定通过腔室的IR辐射量未被吸收并产生对应于腔室中的CO 2的信号。 以预定间隔，将零气体重新引入室中，以使系统被重新校准。 最初仅需要量程气体用于校准目的。

公开(公告)号：US4878755A

公开(公告)日：1989-11-07

申请号：US881708

申请日：1986-07-03

Applicant: Hans-Joachim Siegmund ,  Horst Schwiecker

Inventor： Hans-Joachim Siegmund ,  Horst Schwiecker

IPC: C23C14/54 ,  G01B11/06 ,  G01N21/59 ,  G01N21/84

CPC classification number: C23C14/54 ,  G01B11/0683 ,  G01N21/59 ,  G01N21/8422 ,  G01N2201/128

Abstract: Process for measuring the optical properties of thin layers while they are being built up in vacuum coating installations. For this purpose, at least one test object is passed through a stationary measuring light beam and the transmission behavior of the test object is evaluated by measurement. A reference point for the measurements is fixed in each case by reference measurements at intervals of time. In addition, at least one opaque measurement zone and at least one measuring zone, which does not attenuate the measuring light beam, are disposed in path of motion of the test object. The ratio of the measured value of the test object, decreased by the measured value of the opaque measuring zone, to the measured value of the nonattenuating measuring zone, decreased by the measured value of the opaque measuring zone, is formed by an arithmetic logic unit.

Abstract translation: 在真空涂层装置中建立薄层的光学性能的测量方法。 为此，至少一个测试对象通过静止的测量光束，并通过测量来评估测试对象的传输行为。 在每种情况下，通过参考测量在时间间隔固定测量的参考点。 此外，至少一个不透明测量区域和至少一个不衰减测量光束的测量区域被设置在测试对象的运动路径中。 通过算术逻辑单元形成测试对象的测量值与不透明测量区域的测量值相比减小到不透明测量区域的测量值的比例， 。

公开(公告)号：US4668635A

公开(公告)日：1987-05-26

申请号：US713274

申请日：1985-03-18

Applicant: Martin Forster

Inventor： Martin Forster

IPC: G01N21/31 ,  G01N21/3504 ,  G01N21/78 ,  G01N33/00 ,  G01N21/35

CPC classification number: G01N33/004 ,  G01N21/783 ,  G01N2021/3129 ,  G01N21/3504 ,  G01N2201/128 ,  Y10T436/205831

Abstract: Reactive gases like, for example reducing gases, specifically carbon monoxide, are detected in a gas mixture, particularly in air, with extremely high sensitivity and with high precision using a gas detector in which the attenuation of the intensity of an infrared radiation beam by a catalyst layer is utilized. Such catalyst layer contains at least one transition metal selected from at least one of the groups I, VII, and VIII of the Periodic Table of the Chemical Elements. Preferably, chemical elements are used having an atomic weight in the range of about 100 to about 205. The detection of carbon monoxide is particularly sensitive using a catalyst layer which substantially contains a metal capable of forming a carboncarbonyl compound with carbon monoxide. The sensitivity and precisionof detecting carbon monoxide and other reducing gases can be significantly increased by periodically exchanging the gas mixture to be investigated in a measuring chamber and replacing it with a pure reference gas from a reference chamber. The sensitivity and precision of the gas detection can be further increased by periodically alternating the temperature of the catalyst layer during such period of gas exchange. The alternating signal this obtained at an output of the gas detector can be evaluated for determining the concentration of the reactive or reducing gases in the investigated gas mixture.

Abstract translation: 诸如还原气体，特别是一氧化碳的反应性气体，在具有极高灵敏度和高精度的气体混合物，特别是空气中被检测，使用气体检测器，其中红外辐射束的强度衰减为 催化剂层被利用。 这种催化剂层含有至少一种选自化学元素周期表的I，VII和VIII族中至少一个的过渡金属。 优选地，使用原子量在约100至约205范围内的化学元素。使用基本上含有能够与一氧化碳形成碳羰基化合物的金属的催化剂层，一氧化碳的检测特别敏感。 通过在测量室中周期性地更换待研究的气体混合物并用参考室中的纯参考气体代替，可以显着提高检测一氧化碳和其他还原气体的灵敏度和精度。 通过在气体交换期间周期性地交替催化剂层的温度可以进一步提高气体检测的灵敏度和精度。 可以评估在气体检测器的输出处获得的交变信号，以确定所研究的气体混合物中的反应性或还原性气体的浓度。