A gas analyzer includes a sample inlet, a sample outlet, a detector, a monitoring component, and a controller. The sample inlet is configured to receive a sample and is coupled to the sample outlet. The detector is operably disposed between the sample inlet and the sample outlet and is configured to provide an indication relative to the sample. The monitoring component is configured to provide a diagnostic indication regarding at least one component of the gas analyzer. The controller is configured to control flow through the gas analyzer and is operably coupled to the detector to analyze the sample, provide the analysis to the monitoring component, and provide the indication of health to an output.
G06F 19/00 - Équipement ou méthodes de traitement de données ou de calcul numérique, spécialement adaptés à des applications spécifiques (spécialement adaptés à des fonctions spécifiques G06F 17/00;systèmes ou méthodes de traitement de données spécialement adaptés à des fins administratives, commerciales, financières, de gestion, de surveillance ou de prévision G06Q;informatique médicale G16H)
A bioreactor sensing system is presented. The bioreactor sensing system comprises a bioreaction vessel (20). The bioreaction vessel (20) comprises an aperture configured to provide an interface for monitoring contents (22) within the bioreaction vessel (20). The bioreaction vessel (20) also comprises a port (106) coupled to the bioreaction vessel (20) proximate the aperture. The bioreactor sensing system also comprises a sensing device (104) disposed at least partially within the port (106) such that a sensing device (104) is exposed to the contents (22). The bioreactor sensing system also comprises an external seal (110) configured to be applied over a portion of the sensing device (104) and a portion of the port (106).
A pH sensor (120) for a single-use bioreactor (51) is provided. The sensor (120) includes a pH sensing electrode (146), a reference system, a storage compartment (150), and an access mechanism. The reference system includes a reference electrolyte (142), a reference electrode (144) disposed in the reference electrolyte (142), and a reference junction (152). The storage compartment (150) contains a storage solution (160) that is configured to contact the pH sensing electrode (146) within the storage compartment (150). The access mechanism is configured to, when actuated, couple the pH sensing electrode (146) to an interior of the single-use bio-reactor (51). The storage solution (160) includes a buffer solution that is compatible with the reference electrolyte (142).
A sensor system (100) configured to detect oxygen in an exhaust stream of an industrial process is provided. In one embodiment, the sensor system (100) comprises a probe (104) with an oxygen-detecting sensor (112), wherein the oxygen-detecting sensor (112) detects a concentration of oxygen in the exhaust stream. The system (100) may also comprise a catalytic converter located on the probe near the sensor (112), wherein the catalytic converter is configured to convert carbon monoxide to carbon dioxide. The system (100) may also comprise a signal detector (106) configured to detect a change in oxygen concentration indicative of a carbon monoxide breakthrough.
A single use pH sensor housing for a single use container (50) is provided. The single use pH sensor housing includes a compartment configured to house a single use pH sensor (60,100). In one embodiment, the single use pH sensor housing comprises an actuator configured, when actuated, to transition the single use pH sensor (60,100) from a storage position to a deployed position. In the storage position, the pH sensor (60,100) is in fluidic contact with a buffer solution (78). In the deployed position, the single use pH sensor (60,100) is in fluidic contact with an interior of the single use container (50). During the transition from the storage position to the deployed position, the buffer solution (78) moves from a sensor portion of the compartment to a storage portion (120) of the compartment such that the buffer solution is isolated from contact with the interior of the single use container (50).
A bioreactor vessel (40, 240) is provided. The bioreactor vessel (40) comprises a bioreactor bag wall (100) having an interior side and an exterior side and an aperture (102) extending from the interior side to the exterior side, wherein the interior side is configured to contact and house a reaction mixture. The bioreactor vessel (40, 240) also comprises a port (50, 104, 204) mounted proximate the aperture (102), the port (50, 104, 204) including a flange (106, 206) fixedly attached to the bioreactor bag (40, 240), such that a fluidic seal is maintained along a circumference of the flange (106, 206). The bioreactor vessel (40, 240) also comprises a plurality of sensors (126, 128) disposed within the port (50, 104, 204).
A process analytic instrument (40) includes a measurement cell (60) and an analyzer circuit (50). The measurement cell (60) includes a solid state electrochemical oxygen sensor configured for exposure to a process gas. The analyzer circuit (50) is coupled to the solid state electrochemical sensor to measure an electrical parameter of the solid state electrochemical sensor and provide an output indicative of oxygen in the process gas. A DC bias circuit (130) is configured to selectably bias the solid state electrochemical oxygen sensor with a direct current when the solid state electrochemical sensor is in a reducing environment.
An optical gas sensing apparatus (100) includes an explosion-rated device electronics enclosure (104). An explosion-rated sensing enclosure (108) has a light transmitting element (116) to allow light to pass out of and into the sensing enclosure. The sensing enclosure (108) is operably coupled to the explosion-rated device electronics enclosure (104) by a feed-through (122). In one aspect, an internal volume of the sensing enclosure (108) is less than or equal to about one fiftieth of the volume of the explosion-rated device electronics enclosure (104). In another aspect, the thickness of the light transmitting element (116) is less than or equal to about 3 millimeters. A light source (110) is disposed within the sensing enclosure (108) and is operably coupled to the device electronics (102). A detector (111) is disposed within the sensing enclosure (108) and is also operably coupled to the device electronics (102).
G01N 21/31 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique
G01N 21/39 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable
A wet chemistry analyzer (100) is provided. The wet chemistry analyzer (100) comprises a reaction chamber (102) configured to receive a reactant solution from a sample inlet (112) and facilitate a process reaction. The wet chemistry analyzer (100) also includes a detection chamber (118) configured to receive a portion of a reaction mixture from the reaction chamber (102) and measure a concentration of a chemical within the reaction mixture. The reaction chamber (102) and the detection chamber (118) are fluidically coupleable such that a portion of the reaction mixture can be directed to flow into the detection chamber (118) to precondition a surface inside the detection chamber (118).
An online gas chromatograph (100) is provided. The online gas chromatograph (100) includes a sample inlet (104) and at least one chromatographic column operably coupled to the sample inlet (104). At least one valve (60) is interposed between the sample inlet (104) and the at least one chromatographic column. A detector (128) is fluidically coupled to the at least one chromatographic column. A controller (126) is coupled to the detector (128) and to the at least one valve (60), the controller is configured to control flow from the sample inlet (104) through the chromatograph using the at least one valve (60). The controller (126) is configured to generate a plurality of sequential calibration cycles (302, 304, 306), where each calibration cycle (302, 304, 306) has a calibration gas purge operation (316, 323, 325). The first calibration gas purge operation (316) lasts longer than the second calibration gas purge operation (323).
A colorimetric analyzer (100) includes a reaction chamber (118) configured to receive a sample and at least one reagent. A measurement cell (122) is operably coupled to the reaction chamber (118). The measurement cell (122) has an illumination source (116) and an illumination detector (114) spaced from the illumination source (116) such that illumination from the illumination source (116) passes through the reacted sample to the illumination detector (114). A controller (102) is coupled to the illumination source (116) and the illumination detector (114). The controller (102) is configured to generate an analytic output based on a signal from the illumination detector. A fill conduit (154) is operably interposed between the reaction chamber (118) and the measurement cell (122). The fill conduit (154) is configured to reduce bubbles.
G01N 21/78 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique produisant un changement de couleur
G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
An online colorimetric analyzer (100) that generates an indication of a material in a sample is provided. The analyzer (100) includes a peristaltic pump (200) configured to convey a sample. A photometric cell (206) is operably coupled to the peristaltic pump (200) to receive the sample. An illumination source (210) is disposed to direct illumination through the sample in the photometric cell (206) along an angle of incidence. A photodetector (212) disposed to receive illumination passing through the photometric cell (206) along the angle of incidence and provide a signal indicative of a color of the sample. A controller (102) is coupled to the illumination source (210), the photodetector (212) and the peristaltic pump (200). The photometric cell (206) is tilted relative to vertical such that a surface (216) of liquid present when the photometric cell (206) is partially filled substantially reflects the illumination away from the angle of incidence.
G01N 21/63 - Systèmes dans lesquels le matériau analysé est excité de façon à ce qu'il émette de la lumière ou qu'il produise un changement de la longueur d'onde de la lumière incidente excité optiquement
G01N 21/77 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique
G01N 1/38 - Dilution, dispersion ou mélange des échantillons
13.
MULTIPLE WAVELENGTH LIGHT SOURCE FOR COLORIMETRIC MEASUREMENT
A colorimetric wet chemistry analyzer (200) for determining a concentration of an analyte of interest in a sample is provided. The analyzer (200) includes a reaction chamber (118) configured to receive the sample and facilitate a reaction that changes a color of the sample based on the concentration of the analyte of interest. A photometric (122) cell is operably coupled to the reaction chamber (118) to receive the sample and direct illumination therethrough. The photometric cell (122) has a first illumination (114) source configured to provide illumination at a first wavelength through the photometric cell (122) and a second illumination source (202) configured to provide illumination at a second wavelength through the photometric cell. The second wavelength is different than the first wavelength. A photo detector (116) is configured to detect illumination passing through the photometric cell (122). A controller (102) is coupled to the first illumination source (114), the second illumination source (202) and the photo detector (116) and is configured to provide an indication of concentration relative to the analyte of interest based on a signal from the photo detector (116).
G01N 21/27 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en utilisant la détection photo-électrique
G01J 3/46 - Mesure de couleur; Dispositifs de mesure de couleur, p.ex. colorimètres
G01N 1/38 - Dilution, dispersion ou mélange des échantillons
An adjustable mount (300) for an optical device (212) in a laser spectroscopy system (100) is provided. The adjustable mount (300) includes body (232) configured to mount to a process and a reflector mount (230) having a feature configured to mount an optical device (212). An interface (234) between the body (232) and the reflector mount (230) allows relative motion between the reflector mount (230) and the body (232). At least one alignment device (220) is configured to engage the reflector mount (230) and the body (232) to fix a position of the reflector mount (230) relative to the body (232). An optical device (212) is removably mounted to the reflector mount (230) independent of the alignment device (220) and is sealed to the reflector mount (230).
G01N 21/01 - Dispositions ou appareils pour faciliter la recherche optique
G01N 21/39 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable
A gas absorption spectroscopy system and method are provided. A sealed chamber is provided with a reference gas having a known moisture concentration. An illumination source (112) is disposed in the sealed chamber and is configured to generate an illumination beam. A measurement cell (104) is coupled to the sealed chamber and is configured for exposure to a gas sample (106) such that illumination (118) travelling through the measurement cell (104) passes through the gas sample (106). A process window (116) is disposed between the sealed chamber and the measurement cell (104). The process window (116) is configured to receive the illumination beam from the illumination source (112) and reflect a first portion (128) of illumination while allowing a second portion (118) of illumination to pass into the measurement cell (104). A reference detector (110) is disposed to receive the first portion (128) of illumination and provide a reference detector signal. A measurement detector (108) is disposed to receive the second portion (124) of illumination after the second portion of illumination has passed through the measurement cell (104) and provide a measurement detector signal. A controller (105) is coupled to the reference detector (110) and the measurement detector (108) and is configured to provide a compensated moisture output based on the reference detector signal and the measurement detector signal.
G01N 21/39 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant des lasers à longueur d'onde réglable
G01J 3/42 - Spectrométrie d'absorption; Spectrométrie à double faisceau; Spectrométrie par scintillement; Spectrométrie par réflexion
16.
IN SITU HEATED OXYGEN PROBE WITH INTRINSICALLY SAFE OUTPUT
An in situ oxygen analyzer (10) having an intrinsically-safe output (68) and a heated probe (12) is provided. The probe is extendable into a source of process gas and has an oxygen sensor (34) and heater (38) disposed therein. The heater (38) is configured to heat the oxygen sensor (34) to a temperature sufficient to operate the oxygen sensor (34). A housing is coupled to the probe and has first (36) and second chambers (64). The first chamber (36) is explosion-rated and includes non-intrinsically safe circuitry (50) coupled to the heater (38) to energize the heater (38). The second chamber (64) contains only intrinsically-safe circuitry (72) that complies with an intrinsically-safe specification. The first and second chambers (36, 64) are isolated from one another. The non-intrinsically-safe circuitry (50) is coupled to the intrinsically-safe circuitry (60) through an energy-limiting isolator (70).
A process gas analysis system (100) is provided. The system includes a probe (104) insertable into a source of process gas and having a distal end (108) and a chamber proximate the distal end. A gas sensor (122) is mounted within the chamber and is configured to provide an electrical indication relative to a species of gas. A diffuser (110) is mounted proximate the distal end (108) of the probe (104) and is configured to allow gas diffusion into the chamber. A source of calibration gas is operably coupled to the probe (104) and is configured to supply calibration gas, having a known, concentration of the gas species. Electronics (106) are coupled to the sensor (122) and configured to store a pre-calibration process gas concentration and to measure an amount of time (sensor return time) for the sensor response to return to the pre-calibration process gas concentration. The electronics (106) are configured to compare a measured sensor return time with a known-good sensor return time to provide an indication relative to the diffuser (110).
G01N 27/49 - Systèmes impliquant la détermination du courant à une valeur unique spécifique, ou dans une petite plage de valeurs, pour une tension appliquée afin de produire la mesure sélective d'une ou plusieurs espèces ioniques particulières
G01N 27/12 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un corps solide dépendant de la réaction avec un fluide
A process combustion transmitter (10) is provided. The transmitter (10) includes a process probe (12) extendible into a flow of process combustion exhaust. The process probe (12) has a measurement cell (36) with an operating temperature that is above a flashpoint of process combustion fuel. The process probe (12) includes a heater (38) configured to heat the measurement cell (36) to the operating temperature. Electronic circuitry is coupled to the measurement cell (36) and to the heater (38). The electronic circuitry is configured to disengage power to the heater (38) once process combustion heat is sufficient to maintain the measurement cell (36) at the operating temperature and thereafter to maintain the heater (38) in a de-energized state.
F23N 5/02 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent
19.
IN SITU PROBE WITH IMPROVED DIAGNOSTICS AND COMPENSATION
A process combustion transmitter (10) is provided. The transmitter (10) includes a process probe (12) extendible into a flow of process combustion exhaust. The process probe (12) has a measurement cell (36) and a diffuser (32) that define a chamber (52) within the process probe. Electronic circuitry (42) is coupled to the measurement cell (32) and is configured to provide an indication relative to a combustion process based on an output signal of the measurement cell (32). A pressure sensor (50) is coupled to the electronic circuitry (42) and is fluidically coupled to the chamber (52). The electronic circuitry (42) is configured to provide an adjusted calibration based on pressure measured within the chamber (52) during a calibration.
F23N 5/02 - Systèmes de commande de la combustion utilisant des dispositifs sensibles aux variations thermiques ou à la dilatation thermique d'un agent
20.
IN SITU FLUE GAS ANALYZER WITH IMPROVED PROCESS COMMUNICATION
An in situ flue gas analyzer (10) includes a probe (12) extendable into a flue. The probe (12) has a measurement cell providing a signal responsive to a concentration of a gas within the flue. A controller (52) is coupled to the probe (12) and configured to provide an output based on the signal from the measurement cell. A first media access unit (54) is coupled to the controller (52) and is operably coupleable to a first process communication link. The first media access unit (54) is configured to communicate in accordance with an all- digital process communication protocol. A second media access unit (56) is coupled to the controller (52) and is operably coupleable to a second process communication link. The second media access (56) unit is configured to communicate in accordance with a second process communication protocol that is different than the all-digital process communication protocol. The first and second media access units (54, 56) are enabled simultaneously.
A planar manifold includes a first, generally planar, layer having a plurality of apertures therethrough. A second layer has a plurality of apertures therethrough. A channel layer defines a plurality of channels therein and is interposed between the first layer and the second layer. At least one channel extends in a direction parallel to a plane of the planar manifold and couples an aperture of the first layer to an aperture of the second layer.
B01D 53/02 - SÉPARATION Épuration chimique ou biologique des gaz résiduaires, p.ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par adsorption, p.ex. chromatographie préparatoire en phase gazeuse
A planar manifold (20) includes a first, generally planar, layer (24) having a plurality of apertures therethrough. A second layer (26) has a plurality of apertures therethrough. A channel layer (32, 34) defines a plurality of channels (30) therein and is interposed between the first layer (24) and the second layer (26). At least one channel (30) extends in a direction parallel to a plane of the planar manifold (20) and couples an aperture of the first layer (24) to an aperture of the second layer (26).
G01N 35/08 - Analyse automatique non limitée à des procédés ou à des matériaux spécifiés dans un seul des groupes ; Manipulation de matériaux à cet effet en utilisant un courant d'échantillons discrets circulant dans une canalisation, p.ex. analyse à injection dans un écoulement
A gas detection system (100) is provided. The system (100) includes a sample gas inlet (14) configured to receive a sample of gas and a sample chamber (24) operably coupled to the sample gas inlet (14). The sample chamber (24) has at least one gas sensor (40) disposed therein. The gas sensor (40) provides a gas sensor output indicative of a species of interest in the sample of gas. A controller (28) is coupled to the at least one gas sensor (40) and is configured to provide information related to the species of interest based on the gas sensor output. A moisture removal device (102) is disposed to receive the sample of gas and remove moisture from the sample before the sample reaches the at least one gas sensor (40).
G01N 21/3504 - Couleur; Propriétés spectrales, c. à d. comparaison de l'effet du matériau sur la lumière pour plusieurs longueurs d'ondes ou plusieurs bandes de longueurs d'ondes différentes en recherchant l'effet relatif du matériau pour les longueurs d'ondes caractéristiques d'éléments ou de molécules spécifiques, p.ex. spectrométrie d'absorption atomique en utilisant la lumière infrarouge pour l'analyse des gaz, p.ex. analyse de mélanges de gaz
G01N 27/407 - Cellules et sondes avec des électrolytes solides pour la recherche ou l'analyse de gaz
A method (100) of measuring low conductivity of a liquid sample using a contacting- type conductivity sensor is provided. The method (100) includes applying a first excitation current (102) to a contacting-type conductivity sensor at a first drive frequency. A first voltage response to the first excitation current is determined (104). A second excitation current (106) is applied to the contacting-type conductivity sensor at a second drive frequency higher than the first drive frequency. A second voltage response to the second excitation current is determined (108). A conductivity output is provided based, at least in part, on the first and second voltage responses (110). A system for measuring conductivity of a liquid at or below 100 μ8/αη is also provided (10).
G01N 27/06 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un liquide
25.
PROCESS ANALYTIC INSTRUMENT WITH MULTI-TUBE CONNECTION
A process analytic instrument (10), such as for gas or liquid chromatography, includes an analytical module (12) configured to analyze a process fluid and a removable tube carrier (18) coupled to the analytical module (12). The analytical module (12) has a plurality of inlet ports (54) in a sealing surface (30). The removable tube carrier (18) has an end (28) with a plurality of apertures (32) aligned with the plurality of inlet ports (54) of sealing surface (30) of the analytical module (12). The removable tube carrier (18) fluidically couples a plurality of tubes (16) to the analytical module (12) when the end (28) of the removable tube carrier (18) is biased into the sealing surface (30) of the analytical module (12). The interconnection between the plurality of inlet ports and the tubes is based on a plug and socket scheme.
A process analytic device (101) includes a metallic enclosure (16) having electronics disposed therein. The enclosure (16) has an enclosure wall (54, 76, 102) with a reference surface (70, 104). A plurality of operating rods (58, 106) is provided. Each operating rod (58, 106) is configured to pass through an aperture (60, 108) in the enclosure wall (54, 76, 102) and to cooperate with the enclosure wall (54, 76, 102) to provide a flame quenching pathway. A plurality of electrical switches (84) is provided where each electrical switch (84) is aligned with a respective operating rod (58, 106), and is mounted a controlled distance from the reference surface (70, 104). Each operating rod (58, 106) transfers movement to a respective electrical switch (84) through the flame quenching pathway.
H01H 13/06 - Enveloppes étanches à la poussière, aux projections, aux éclaboussures, à l'eau ou aux flammes
H01H 13/86 - Interrupteurs ayant un organe moteur à mouvement rectiligne ou des organes adaptés pour pousser ou tirer dans une seule direction, p.ex. interrupteur à bouton-poussoir ayant une pluralité d'éléments moteurs associés à différents jeux de contacts, p.ex. claviers caractérisés par le boîtier, p.ex. boîtier étanche ou boîtier réductible
A contacting-type conductivity sensor (10) includes an electrically-insulative plastic body (20) and a plurality of electrodes (12, 14, 16, 18). The plurality of conductive electrodes (12, 14, 16, 18) is disposed in the plastic body (20). Each electrode (12, 14, 16, 18) is constructed of plastic and fused with the electrically-insulative plastic body (20). A method of manufacturing the conductivity sensor is provided along with a single-use bioreactor (50) employing the sensor (10).
A single use -bioreactor/container (50) for use with a dissolved oxygen sensor (1) is provided. The bioreaction vessel (50) includes a plastic wall (62) defining a bioreaction chamber therein, and having an aperture (68) therethrough. A membrane holder (60) is attached to an inner surface of the plastic wall (62). The membrane holder (60) has a cylindrical portion passing through the aperture (68). A sensor window membrane (70) is coupled to the membrane holder (60) proximate the aperture (68). The sensor window membrane (70) has a high oxygen permeability, but forms a water-tight seal with the membrane holder (60).
G01N 27/404 - Cellules avec l'anode, la cathode et l'électrolyte de la cellule du même côté d'une membrane perméable qui les sépare du fluide de l'échantillon
A pH sensing bioreaction system is provided. The system includes a bioreaction container (51) having a plastic wall (50) and a pH sensor (40, 60, 80, 100, 120) attached to the plastic wall (50). The pH sensor (40, 60, 80, 100, 120) includes a sensor body (82) having a flange (76) that is sealingly attached to the plastic wall (50). The sensor body (82) has a reference electrolyte (142) therein and a first sensing element (152) disposed in the reference electrolyte (142). The first sensing element (152) is configured to contact both the reference electrolyte (142) and a sample solution (52) inside the bioreaction container. A second sensing element (62, 92, 148) is positionable into an interior of the bioreaction container (51). The pH sensor (40, 60, 80, 100, 120) has a plurality of configurations that include a booted configuration in which at least one sensing element is isolated from the interior of the bioreaction container (51), and a service configuration in which the at least one sensing element is fluidically coupled to the interior of the bioreaction container (51).
A process analytic sensor (14) is provided. The process analytic sensor (14) includes a process analytic sensing element (24) that is coupleable to a process. The process analytic sensing element (24) has an electrical characteristic that varies with an analytical aspect of the process. A microcontroller (22) is disposed within the process analytic sensor (14) and is coupled to the process analytic sensing element (24) to sense the electrical characteristic and provide an analytical signal based on the sensed characteristic. The microcontroller (22) is operable on as little as 0.5 milliamps and includes electrically erasable programmable read only memory (EEPROM) (54) that can be written while the microcontroller (22) operates on as little as 0.5 milliamps.
A method (100) of operating a process combustion analyzer (10) having a measurement cell (36) is provided. The method includes exposing the measurement cell to exhaust of a combustion process where fuel (20) and oxygen (18) are combined in a burner (16) to produce a flame. The measurement cell is heated (102) to a temperature above a flashpoint of the fuel. When a condition is detected (108), such as a fault or abnormal situation, gas is directed (110) to the measurement cell (36) to form a gaseous barrier between the measurement cell (36) and unburned fuel (20) while the detected condition exists. Once the condition abates, the gas flow is disengaged and process combustion gas measurements are provided.
A contacting -type conductivity sensor (100, 200) is provided. A first insulating layer (116) has a proximal surface (102) to contact a liquid sample, and an opposite, distal surface (122). A plurality of electrodes (104, 106, 110, 112) is disposed on the proximal surface (102) of the first insulating layer (116). Each of a plurality of conductive vias (118) is electrically coupled to a respective one of the plurality of electrodes (104, 106, 110, 112), where each via (118) defines a conductive path from the proximal surface (102) to the distal surface (122) of the first insulating layer (116). A plurality of traces is disposed adjacent the distal surface (122) of the first insulating layer (116), and each of the plurality of traces is electrically coupled to a respective one of the plurality of conductive vias (118). A plurality of conductors (132) is provided where each conductor (132) is electrically coupled to a respective one of the plurality of traces. A cover layer (130) is coupled to the first insulating layer (116).
A sensor (100) for analyzing a liquid sample (24) is provided. The sensor (100) includes a sensor body (122) defining a chamber therein. A sensing cell (134) is disposed within the chamber and is adapted to contact the sample solution (24). The sensing cell (134) has a sensing cell fill solution therein, and a sensing electrode (136) disposed within the sensing cell fill solution. A reference fill solution is disposed within the sensor body (122). A reference junction (132) is arranged to contact the reference fill solution (128) and the sample solution (24). A temperature sensitive device (140) is disposed within the body (122) and is configured to provide a temperature sensitive device output. A reference electrode (130) is disposed within the sensor body (122) in contact with the reference fill solution (128). A solution ground electrode (102) is disposed within the sensor body (122) and spaced from the reference electrode (130).
A pH sensor is provided. The pH sensor includes a body, a glass electrode, a reference electrode and a solution ground. The glass electrode is disposed on the body to contact a liquid sample. The reference electrode has a reference fill solution disposed within the body. The solution ground electrode is operably coupled to the body and has a portion of the solution ground electrode that is disposed within a harbor such that a portion of the solution ground electrode is configured to contact the liquid sample. The body has a passageway that extends from the reference fill solution to an aperture proximate the liquid sample.
A pH sensor (104) is provided. The pH sensor (104) includes a body (105), a glass electrode (107), a reference electrode (110) and a solution ground (114). The glass electrode (107) is disposed on the body (105) to contact a liquid sample (106). The reference electrode (110) has a reference fill solution disposed within the body (105). The solution ground electrode (114) is operably coupled to the body (105) and has a portion of the solution ground electrode that is disposed within a harbor (116) such that a portion of the solution ground electrode (114) is configured to contact the liquid sample (106). The body (105) has a passageway (112) that extends from the reference fill solution to an aperture (111) proximate the liquid sample (106).
A dissolved oxygen measurement system, and a method for calibrating a dissolved oxygen analyzer are provided. The method includes directing a pressurized cleaning fluid, having a known oxygen content, upon a sensing surface of a dissolved oxygen sensor disposed in a fluid. Then, the analyzer waits until the dissolved oxygen sensor response to the pressurized cleaning fluid is relatively stable, and stores a calibration value relative to the dissolved oxygen sensor response to the pressurized cleaning fluid. A dissolved oxygen measurement system is also provided. The system includes a dissolved oxygen sensor disposed in a fluid and a first source of a first compressed cleaning fluid that has a first dissolved oxygen content. A dissolved oxygen analyzer is coupled to the dissolved oxygen sensor and to the first valve and is configured to obtain a first calibration value related to the first dissolved oxygen content.
G12B 13/00 - DÉTAILS OU PARTIES CONSTITUTIVES D'INSTRUMENTS OU DÉTAILS OU PARTIES CONSTITUTIVES COMPARABLES D'AUTRES APPAREILS, NON PRÉVUS AILLEURS Étalonnage des instruments ou appareils
An improved contacting-type conductivity measurement system and method are provided. A first conductivity measurement is obtained by driving a contacting-type conductivity sensor with an excitation voltage at a first frequency, a second conductivity is obtained by driving the contacting-type conductivity sensor with the excitation voltage at a second frequency. The first and second conductivity measurements are used to provide a more accurate conductivity output.
G01R 27/08 - Mesure de la résistance par mesure à la fois de la tension et de l'intensité
G01R 27/02 - Mesure de résistances, de réactances, d'impédances réelles ou complexes, ou autres caractéristiques bipolaires qui en dérivent, p.ex. constante de temps
An improved contacting-type conductivity measurement system and method are provided. A first conductivity measurement is obtained by driving a contacting- type conductivity sensor (14) with an excitation voltage at a first frequency, a second conductivity is obtained by driving the contacting- type conductivity sensor (14) with the excitation voltage at a second frequency. The first and second conductivity measurements are used to provide a more accurate conductivity output.
G01N 27/06 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en recherchant l'impédance en recherchant la résistance d'un liquide
A method of measuring impedance of a pH electrode is provided. A test current is applied to the pH electrode for a time duration that is less than 50 percent of a time constant that is associated with electrical characteristics of the pH electrode. A voltage response of the pH electrode is measured when the test current is applied to the pH electrode. An impedance of the pH electrode is calculated as a function of the voltage response.
A method (300) of measuring impedance of a pH electrode (210) is provided. A test current (I) is applied (320) to the pH electrode (210) for a time duration that is less than 50 percent of a time constant that is associated with electrical characteristics of the pH electrode (210). A voltage response of the pH electrode is measured (330) when the test current (I) is applied to the pH electrode (210). An impedance of the pH electrode is calculated as a function of the voltage response (340).
G01R 27/02 - Mesure de résistances, de réactances, d'impédances réelles ou complexes, ou autres caractéristiques bipolaires qui en dérivent, p.ex. constante de temps
42.
ELECTROCHEMICAL CELL AND REFERENCE CELL WITH FLOWING LIQUID JUNCTION
An electrochemical cell (20) includes a measuring electrode (12) and a reference electrode (14). The reference electrode (14) includes a flowing liquid junction (22) between a reference fill fluid (24) and a sample (18). The flowing liquid junction (22) is configured to inhibit particles (30) from blocking or obstructing it. In one aspect a particle filter (32) is provided before the flowing liquid junction (22) to prevent particles (30) from the fill fluid (24) from entering the flowing liquid junction (22). In another aspect a particle filter (36) is provided after the flowing liquid junction (22) to prevent particles in the sample (18) from entering the flowing liquid junction (22). In another aspect the flowing liquid junction (22) has a diameter that generally increases from an aperture (130) proximate the fill fluid (24) to an aperture (134) proximate the sample (18). One example of such a configuration is a tapered flowing liquid junction (22).
An integrated luminescence sensor (200) includes a light pipe (208) in optical communication with a luminescence sensing layer (220) . A source of excitation illumination (204) is coupled to the light pipe (208) and disposed to direct excitation illumination toward the sensing layer (220) . A luminescent light detector (202) is also coupled to the light pipe (208) and is disposed to detect luminescent illumination luminescing from the sensing layer (220) , which luminescence is related to interaction between the sensing layer (220) and a substance of interest (222) .
G01N 21/77 - Systèmes dans lesquels le matériau est soumis à une réaction chimique, le progrès ou le résultat de la réaction étant analysé en observant l'effet sur un réactif chimique
A contacting-type conductivity sensor (40,68) includes a plurality of electrodes (30, 66) disposed on a distal surface (24, 54) of a substrate (20, 50). The substrate (20) includes a plurality of vias (22, 52) through which electrical interconnection to the electrodes (30, 66) is accomplished. The conductivity sensor (40,68) can employ two or four electrodes (30, 66) and may have a temperature sensitive element (80) disposed on the distal surface (24, 54). The electrodes (30, 66) may be patterned or otherwise deposited using semiconductor processing techniques.
An amperometric sensor (100) includes a sensor body (112) having a distal end (116) and an interior containing an electrolytic fill solution (132). A porous membrane (114) is disposed proximate the distal end (116) to allow diffusion of molecules or ions of interest. A working electrode (120) is disposed within the sensor body (112) proximate the membrane (114). A counter electrode (140) is disposed to conduct current between the counter electrode (140) and the working electrode (120). The counter electrode (140) is physically isolated from the electrolytic fill solution (132). A method (200) of measuring a concentration of the molecules or ions ofinterest is also provided.
G01N 27/49 - Systèmes impliquant la détermination du courant à une valeur unique spécifique, ou dans une petite plage de valeurs, pour une tension appliquée afin de produire la mesure sélective d'une ou plusieurs espèces ioniques particulières
A free chlorine measurement system and sensor are provided. In accordance with one aspect of the invention, the sensor has a porous working electrode disposed in an electrolyte proximate a porous membrane. The membrane allows free chlorine therethrough where it is reduced and generates a current. The current is related to the free chlorine concentration. The internal electrolyte solution is pH stabilized with a long-term pH stabilizer that has a solubility in water at room temperature between about 1.2 moles/liter and about 0.001 moles/liter. The stabilizer can be an acid or a base depending on whether the pH is to be stabilized at a relatively low value or a relatively high value respectively.
G01N 27/26 - Recherche ou analyse des matériaux par l'emploi de moyens électriques, électrochimiques ou magnétiques en utilisant l'électrolyse ou l'électrophorèse
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
42 - Services scientifiques, technologiques et industriels, recherche et conception
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
ELECTRONIC INSTRUMENTS AND SENSORS FOR MEASURING COMPONENTS AND CHARACTERISTICS OF PROCESS FLUIDS AND LIQUIDS OPERATION AND ADMINISTRATION IN THE FIELD OF INDUSTRIAL PROCESSES REPAIR, AND INSTALLATION SERVICES IN THE FIELD OF INDUSTRIAL PROCESSES DESIGN, ENVIRONMENTAL COMPLIANCE AND MONITORING SERVICES IN THE FIELD OF INDUSTRIAL PROCESSES TRAINING IN THE FIELD OF INDUSTRIAL PROCESSES
Sulfur resistant sensors and a process analytic system employing such sensors are provided. The sensors generally include a treatment or material that is adapted to increase the resistance of certain portions of the sensors to exposure to sulfur. In one aspect, an improved sulfur-resistant process analytic system includes a probe with one or more sulfur-resistant sensors therein coupled to a controller, a thermal control module, and a source of blowback gas.
