公开(公告)号：WO1993008477A1

公开(公告)日：1993-04-29

申请号：PCT/US1992008799

申请日：1992-10-14

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  FORSYTHE, Timothy, J. ,  KOLUVEK, Roland, H.

IPC: G01R27/00

CPC classification number: G01R31/282 ,  G01N27/4165

Abstract: An apparatus and method for measuring potentiometric electrode impedance for diagnostic purpose while continuously reading the results of the process value. A square wave is applied to an external circuit (78, 84), which in turn is coupled to an electrode assembly (13) output through a capacitor (52). The output of the electrode (13) is converted into a pulse width modulated signal and sampled. These sampled values are used to calculate the impedance and process output value.

公开(公告)号：WO1998013688A1

公开(公告)日：1998-04-02

申请号：PCT/US1997016002

申请日：1997-09-10

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  FARBER, Boris, Y. ,  O'NEILL, Michael, G. ,  ESTVANDER, Michael, T. ,  THOMSON, James, W.

IPC: G01N27/417

CPC classification number: G01N27/4065 ,  G01N27/4175

Abstract: A solid electrolyte gas analyzer (40) is equipped with a diagnostic circuit (50) that intermittently measures an impedance of the solid electrolyte measurement cell (60) as an indication that the cell is in need of calibration or replacement. The disgnostic operation is performed on the cell (60) in situ, i.e., while the solid electrolyte cell (60) is exposed to the gas to be measured and heated to a controlled elevated temperature. Preferably the cell impedance is measured at a predetermined frequency by injecting a modulated current through the cell (60) and measuring the resulting voltage drop.

Abstract translation: 固体电解质气体分析仪（40）装备有诊断电路（50），其间歇地测量固体电解质测量电池（60）的阻抗，作为电池需要校准或更换的指示。 即将固体电解质电池（60）暴露于被测量的气体并加热到受控的升高温度时，对电池（60）进行预处理操作。 优选地，通过注入调制电流通过电池（60）并测量所得到的电压降，以预定频率测量电池阻抗。

公开(公告)号：WO1994009376A1

公开(公告)日：1994-04-28

申请号：PCT/US1993009226

申请日：1993-09-28

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  KOLUVEK, Roland, H.

IPC: G01R27/14

CPC classification number: G01R27/14

Abstract: A method and apparatus are disclosed for measuring a resistance of a sensor (10). The apparatus injects a first test current (16) into the sensor (10) and then measures a substantially stable first voltage level across the sensor when the first test current is present. The apparatus then injects a second test current (17) into the sensor, the second test current (17) being substantially equal to but opposite in polarity to the first test current (16). A substantially stable second voltage level across the sensor (10) is measured when the second test signal is present. Using the first measured voltage level and the second measured voltage level, the apparatus calculates the resistance of the sensor (10).

Abstract translation: 公开了一种用于测量传感器（10）的电阻的方法和装置。 该装置将第一测试电流（16）注入到传感器（10）中，然后当存在第一测试电流时测量跨传感器的基本上稳定的第一电压电平。 然后，该装置将第二测试电流（17）注入到传感器中，第二测试电流（17）基本上等于但与第一测试电流（16）极性相反。 当存在第二测试信号时，测量跨传感器（10）的基本稳定的第二电压电平。 使用第一测量电压电平和第二测量电压电平，该装置计算传感器（10）的电阻。

公开(公告)号：WO1998021572A1

公开(公告)日：1998-05-22

申请号：PCT/US1997020368

申请日：1997-11-10

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  BENTON, Barry, W.

IPC: G01N27/414

CPC classification number: G01N27/414

Abstract: An Ion-sensitive Field Effect Transistor (ISFET) sensor (52, 300) for sensing ion activity of a solution includes a substrate (54, 220, 304) and an ISFET semiconductor die (56, 160, 200, 302). The substrate (54, 220, 304) has front surface (66) exposed to the solution, a back surface (68) opposite to the front surface and aperture (74) extending between the front and back surfaces. The ISFET semiconductor die (54, 160, 200, 302) has an ion-sensitive surface (65) with a gate region (60, 174). The ion-sensitive surface is mounted to the back surface (68) such that the gate region (60, 174) is exposed to the solution through the aperture (74).

Abstract translation: 用于感测溶液的离子活性的离子敏感场效应晶体管（ISFET）传感器（52,300）包括衬底（54,220,304）和ISFET半导体管芯（56,160,200,302）。 衬底（54,220,304）具有暴露于溶液的前表面（66），与前表面相对的后表面（68）和在前表面和后表面之间延伸的孔（74）。 ISFET半导体管芯（54,160,200,302）具有具有栅极区域（60,174）的离子敏感表面（65）。 离子敏感表面安装到后表面（68），使得栅极区域（60,174）通过孔（74）暴露于溶液。

公开(公告)号：WO1998013687A1

公开(公告)日：1998-04-02

申请号：PCT/US1997017066

申请日：1997-09-22

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  FARBER, Boris, Y. ,  STARLING, Joanne, M. ,  LITTLE, Mark

IPC: G01N27/407

CPC classification number: G01N27/4077

Abstract: A solid electrolyte gas analyzer (40) includes a probe (42) for immersion in the gas of interest. The probe has a passageway (57) connecting the gas of interest to a heated solid electrolyte cell (60). A collection of beads (56A), each having an outer surface comprising a catalytic material such as platinum, is disposed in the passageway (57). The platinum surfaces of the beads (56A) act as a catalyst to protect the cell (60) from sulfur and other corrosive elements originating from the gas of interest. In a preferred embodiment the beads (56A) are disposed proximate the cell (60) and a heater (66) surrounds both the cell (60) and the beads (56A) to heat them to a predetermined temperature.

Abstract translation: 固体电解质气体分析器（40）包括用于浸入感兴趣的气体中的探针（42）。 探针具有将感兴趣的气体连接到加热的固体电解质电池（60）的通道（57）。 每个具有包括催化材料如铂的外表面的珠（56A）的集合设置在通道（57）中。 珠（56A）的铂表面起催化剂的作用，以保护细胞（60）免受来自感兴趣的气体的硫和其它腐蚀性元素。 在优选实施例中，珠（56A）设置在电池（60）附近，并且加热器（66）围绕电池（60）和珠（56A），以将它们加热到预定温度。

公开(公告)号：WO1998013686A1

公开(公告)日：1998-04-02

申请号：PCT/US1997016001

申请日：1997-09-10

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  O'NEILL, Michael, G. ,  MUZZY, Joel, P. ,  ESTVANDER, Michael, T.

IPC: G01N27/406

CPC classification number: G01N27/4065 ,  G01N27/407

Abstract: A solid electrolyte gas analyzer (40) includes an analyzer circuit (50) housed in an electronics housing (48) and a probe housing (42) for immersion in the gas of interest. The electronics housing (48) mounts directly to the probe housing (42), preferably through a standoff (52). The analyzer circuit (50) is powered by an AC line input and includes a switching power supply (84) to convert the AC line input to DC power useable by the analyzer circuit (50). The analyzer circuit (50) also includes a heater circuit (92) controlling a heater (66) in the probe housing (42). The power supply (84) and the heater circuit (92) automatically adjust to different AC line input voltage levels. The switching power supply (84) efficiently supplies DC power to other portions of the analyzer circuit (50) with little heat generation.

Abstract translation: 固体电解质气体分析器（40）包括容纳在电子设备壳体（48）中的分析器电路（50）和用于浸入感兴趣的气体中的探针外壳（42）。 电子设备外壳（48）优选通过支座（52）直接安装到探头壳体（42）。 分析器电路（50）由交流线路输入供电，并包括开关电源（84），用于将AC线路输入转换成由分析器电路（50）可用的​​直流电力。 分析器电路（50）还包括控制探头壳体（42）中的加热器（66）的加热器电路（92）。 电源（84）和加热器电路（92）自动调整到不同的交流线路输入电压电平。 开关电源（84）在发热少的情况下，有效地向分析电路（50）的其他部分供给直流电力。

公开(公告)号：WO1997040365A1

公开(公告)日：1997-10-30

申请号：PCT/US1997005039

申请日：1997-03-28

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  CROZIER, David ,  LANG, Gary, A. ,  ANANTH, Seetha

IPC: G01N21/35

CPC classification number: G01N21/359 ,  A61L2/26 ,  G01N21/3504

Abstract: A method and apparatus for measuring a content of vaporous hydrogen peroxide in a gaseous medium within an enclosure (11) includes an irradiating a portion of the gaseous medium with light, measuring an absorbance of light in a selected near-infrared wavelength range, and calculating the content of vaporous hydrogen peroxide from the measured absorbance of light.

Abstract translation: 一种用于测量外壳（11）内的气态介质中的气态过氧化氢含量的方法和装置，包括用光照射气体介质的一部分，测量所选择的近红外波长范围内的光的吸光度，并计算 从测定的光吸光度测定蒸气过氧化氢的含量。

公开(公告)号：WO1997012239A1

公开(公告)日：1997-04-03

申请号：PCT/US1996014776

申请日：1996-09-16

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  SITTLER, Fred, C. ,  NELSON, Cynthia, R. ,  MAJERUS, Lawrence, R.

IPC: G01N30/88

CPC classification number: G01N30/88 ,  G01N30/66 ,  G01N2030/025 ,  G01N2030/205 ,  G01N2030/8881

Abstract: A gas chromatograph (10) includes a manifold (128) having a plurality of gas conduits formed therein. A valve module (16) includes a support, a first valve (60) mounted to the support and having a plurality of ports, and a column (64) coupled to the support and being in communication with a port in the first valve (60). The valve module (16) is pluggably engagable with the manifold (128). A detector (72) is coupled relative to the column (64) to detect gasses expelled from the column (64).

Abstract translation: 气相色谱仪（10）包括具有形成在其中的多个气体导管的歧管（128）。 阀模块（16）包括支撑件，安装到支撑件并具有多个端口的第一阀（60）和联接到支撑件并与第一阀（60）中的端口连通的柱 ）。 阀模块（16）可与歧管（128）可插拔地接合。 检测器（72）相对于塔（64）耦合以检测从塔（64）排出的气体。

公开(公告)号：WO1994007134A1

公开(公告)日：1994-03-31

申请号：PCT/US1993008593

申请日：1993-09-13

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  TAKAHASHI, Yoshihiro

IPC: G01N31/00

CPC classification number: G01N31/12 ,  G01N31/005

Abstract: A method and apparatus for determining Total Nitrogen Content and/or Combined Nitrate-Nitrite Nitrogen Content in an aqueous system is disclosed. To measure the Total Nitrogen Content, an oxidation tube (12) having an oxidation catalyst (32) receives a carrier gas (20) including oxygen and a sample (13) of the aqueous system. The oxidation tube (12) converts the aqueous sample (13) to a product gas including nitrogen dioxide. The nitrogen dioxide is then converted to nitric oxide in a reaction chamber (14) having a liquid chemical reduction agent (41). The nitric oxide is received and measured to determine the Total Nitrogen Content by a detection apparatus (18). To measure the Combined Nitrate-Nitrite Nitrogen Content in the aqueous system, a second aqueous sample (43) is injected into the reaction chamber (14) and converted to a second quantity of nitric oxide. The second quantity of nitric oxide is received and measured by the detection apparatus (18).

Abstract translation: 公开了一种用于测定含水体系中的总氮含量和/或硝酸盐 - 亚硝酸盐氮含量的方法和装置。 为了测量总氮含量，具有氧化催化剂（32）的氧化管（12）接收包含氧的载气（20）和水系统的样品（13）。 氧化管（12）将含水样品（13）转化成包括二氧化氮的产物气体。 然后在具有液体化学还原剂（41）的反应室（14）中将二氧化氮转化成一氧化氮。 接收并测量一氧化氮以通过检测装置（18）确定总氮含量。 为了测量含水体系中的硝酸盐 - 亚硝酸盐含量，将第二含水样品（43）注入反应室（14）并转化为第二量的一氧化氮。 第二量的一氧化氮被检测装置（18）接收和测量。

公开(公告)号：WO1993016362A1

公开(公告)日：1993-08-19

申请号：PCT/US1993001001

申请日：1993-02-05

Applicant: ROSEMOUNT ANALYTICAL INC.

Inventor： ROSEMOUNT ANALYTICAL INC. ,  RYAN, Frederick, M. ,  THOMSON, James, W.

IPC: G01J03/42

CPC classification number: G01N21/253 ,  G01J3/1256 ,  G01N2201/0826

Abstract: An analyzer (9) measures properties of multiple chemical samples, and includes an optical filter element (24) having a long axis (25) and positioned at a location where simultaneous multiple light beams, corresponding to the chemical samples to be measured, form a diffuse light spot (20) elongated along an axis (21) which is substantially aligned with the filter element long axis. The analyzer also includes a light source (10), filter means (18) incorporating the filter element (24) for transmitting spectrally selected portions of the light beams, sample cells means (31, 32, 33) for exposing each sample to its associated light beam, and detector means (41, 42, 43) for detecting the light beams after modification by the samples and after transmission by the filter. In a preferred embodiment, optical fibers carry the light beams to and from the chemical samples. In a preferred embodiment the filter means (18) is an acousto-optic tunable filter (AOTF) system.