[go: up one dir, main page]

US20170023463A1 - Rugged target-analyte permeation testing instrument employing a consolidating block manifold - Google Patents

Rugged target-analyte permeation testing instrument employing a consolidating block manifold Download PDF

Info

Publication number
US20170023463A1
US20170023463A1 US15/039,100 US201515039100A US2017023463A1 US 20170023463 A1 US20170023463 A1 US 20170023463A1 US 201515039100 A US201515039100 A US 201515039100A US 2017023463 A1 US2017023463 A1 US 2017023463A1
Authority
US
United States
Prior art keywords
cell
target
gas
chamber
driving
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/039,100
Inventor
Daniel W. Mayer
Slava A. Berezovskiy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Modern Controls Inc
Original Assignee
Mocon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mocon Inc filed Critical Mocon Inc
Priority to US15/039,100 priority Critical patent/US20170023463A1/en
Assigned to MOCON, INC. reassignment MOCON, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAYER, DANIEL W, BEREZOVSKIY, SLAVA A
Publication of US20170023463A1 publication Critical patent/US20170023463A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082—Investigating permeability by forcing a fluid through a sample
    • G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/0806—Details, e.g. sample holders, mounting samples for testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/004—CO or CO2
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00594—Quality control, including calibration or testing of components of the analyser
    • G01N35/00693—Calibration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/00584—Control arrangements for automatic analysers
    • G01N35/00594—Quality control, including calibration or testing of components of the analyser
    • G01N35/00712—Automatic status testing, e.g. at start-up or periodic
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
    • G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
    • G01N35/1095—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers
    • G01N35/1097—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices for supplying the samples to flow-through analysers characterised by the valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N2015/086—Investigating permeability, pore-volume, or surface area of porous materials of films, membranes or pellicules

Definitions

  • test films are polymeric packaging films such as those constructed from low density polyethylene (LDPE), high density polyethylene (HDPE), oriented polypropylene (OPP), polyethylene terepthalate (PET), polyvinylidene chrloride (PVTDC), etc.
  • LDPE low density polyethylene
  • HDPE high density polyethylene
  • OPP oriented polypropylene
  • PET polyethylene terepthalate
  • PVTDC polyvinylidene chrloride
  • the film to be tested is positioned within a test chamber to sealing separate the chamber into first and second chambers.
  • the first chamber (commonly referenced as the driving or analyte chamber) is filled with a gas containing a known concentration of the target analyte (commonly referenced as a driving gas).
  • the second chamber (commonly referenced as the sensing chamber) is flushed with an inert gas (commonly referenced as a carrier gas) to remove any target analyte from the cell.
  • a sensor for the target analyte is placed in fluid communication with the sensing chamber for detecting the presence of target analyte that has migrated into the sensing chamber from the driving chamber through the test film.
  • Exemplary permeation instruments for measuring the transmission rate of oxygen (O 2 ), carbon dioxide (CO 2 ) and water vapor (H 2 O) through test films are commercially available from Mocon, Inc. of Minneapolis, Minn. under the designations O XTRAN , P ERMATRAN -C and P ERMATRAN -W, respectively.
  • Permeation instruments are being used more often to measure ever decreasing concentrations of target-analyte, into the ppm or even ppb range, and are therefore extremely sensitive to even minute atmospheric contamination of the fluids used in the instrument.
  • Permeation instruments employ an extensive network of fluid interconnections with numerous valves to achieve the desired choreographed flow of driving and carrier gas through the instrument, especially when the instrument employs a plurality of testing cells in fluid communication with a single common target-analyte sensor.
  • Each fitting in the fluid transfer system of the instrument is a potential source of contamination as atmospheric oxygen, carbon dioxide and water vapor leak around or permeate through the seals on the fittings, especially as the seals on the fittings loosen over time.
  • the invention is a target-analyte permeation testing instrument characterized by a block manifold.
  • the instrument has a target-analyte sensor and a plurality of test cells for measuring target-analyte permeation rate of a test film.
  • Each test cell defines a testing chamber and is operable for retaining a test film to sealingly divide the testing chamber into a driving chamber and a sensing chamber.
  • the block manifold is fixed to the plurality of cells and has a plurality of channels in fluid communication with the testing chamber of each cell, a pressurized source of driving gas, a pressurized source of inert gas, and a target-analyte sensor.
  • the plurality of channels are configured and arranged to selectively carry driving gas from the pressurized source of driving gas to the driving chamber of each cell, carry driving gas from the driving chamber of each cell to a driving gas exit port in the manifold, selectively carry inert gas from the pressurized source of inert gas to the sensing chamber of each cell, and selectively carry inert gas from the sensing chamber of each cell to the target-analyte sensor.
  • the block manifold can include a refillable first water reservoir in selective fluid communication with the source of driving gas and in fluid communication with the driving chamber of each cell, and a second refillable water reservoir in selective fluid communication with the source of inert gas and in fluid communication with the sensing chamber of each cell.
  • FIG. 1 is a schematic plumbing diagram of one embodiment of the invention.
  • the invention is a target-analyte permeation testing instrument 10 characterized by a block manifold 100 , preferably a solid block cast metal manifold 100 into which the appropriate channels and compartments are formed.
  • the instrument 10 has a target-analyte sensor 200 and a plurality of test cells 70 n for measuring target-analyte permeation rate of test films F n .
  • Each test cell 70 n defines a testing chamber and is operable for retaining a test film F to sealingly divide the testing chamber into a driving chamber 70 n A and a sensing chamber 70 n B.
  • the cells 70 n are secured to the block manifold 100 .
  • the block manifold 100 has a plurality of channels 300 n in fluid communication with the testing chamber of each cell 70 n , a pressurized source of driving gas A, a pressurized source of inert gas B, and a target-analyte sensor 200 .
  • the plurality of channels 300 n are configured and arranged to selectively carry driving gas from the pressurized source of driving gas A to the driving chamber 70 n A of each cell 70 n , carry driving gas from the driving chamber 70 n A of each cell 70 n to a driving gas exit port 70 n Ax in the manifold 100 , selectively carry inert gas from the pressurized source of inert gas B to the sensing chamber 70 n B of each cell 70 n , and selectively carry inert gas from the sensing chamber 70 n B of each cell 70 n to a the target-analyte sensor 200 .
  • the block manifold 100 can include a refillable first water reservoir 50 A in selective fluid communication with the source of driving gas A and in fluid communication with the driving chamber 70 n A of each cell 70 n , and a second refillable water reservoir 50 B in selective fluid communication with the source of inert gas B and in fluid communication with the sensing chamber 70 n B of each cell 70 n .
  • FIG. 1 An exemplary two-cell embodiment of the invention 10 is depicted in FIG. 1 .
  • the permeation testing instrument 10 preferably includes humidification systems for each of the test gas and carrier gas, such as described in U.S. Pat. Nos. 7,578,208 and 7,908,936, the disclosures of which are hereby incorporated by reference.
  • a source of dry test gas A fluidly communicates with a first humidification system that includes a wet line 300 0 A wet in fluid communication with a water reservoir 50 A and a dry line 300 0 A dry that bypasses the water reservoir 50 A.
  • a test gas RH control valve 20 A controls flow of test gas through the wet line 300 0 A wet and dry line 300 0 A dry according to a duty cycle for achieving the desired humidification level of the test gas.
  • test gas wet line 300 0 A wet enters the block manifold 100 at inlet port 101 A wet .
  • the test gas dry line 300 0 A dry enters the block manifold 100 at inlet port 101 A dry .
  • test gas in the wet line 300 0 A wet is combined with dry test gas in the dry line 300 0 A dry and the combined test gas directed by test gas inlet lines 300 1 A and 300 2 A to the driving chambers 70 1 A and 70 2 A in the first testing cell 70 1 and second testing cell 70 2 respectively.
  • Test gas flows through and exits each of the driving chambers 70 1 A and 70 2 A through an outlet port (unnumbered) and is vented from the block manifold at vent ports 70 1 Ax and 70 2 Ax respectively.
  • Particle filters 40 A wet and 40 A dry are preferably provided in the test gas wet line 300 0 A wet and test gas dry line 300 0 A dry respectively, for removing any entrained particulate matter from the test gas before it enters the block manifold 100 .
  • a source of dry carrier gas B fluidly communicates with a second humidification system that includes a wet line 300 0 B wet in fluid communication with a water reservoir 50 B and a dry line 300 0 B dry that bypasses the water reservoir 50 B.
  • a carrier gas RH control valve 20 B controls flow of carrier gas through the wet line 300 0 B wet and dry line 300 0 B dry according to a duty cycle for achieving the desired humidification level of the carrier gas.
  • the carrier gas wet line 300 0 B wet enters the block manifold 100 at inlet port 101 B wet .
  • the carrier gas dry line 300 0 B dry enters the block manifold 100 at inlet port 101 B dry .
  • humidified carrier gas in the wet line 300 0 B wet is combined with dry carrier gas in the dry line 300 0 B dry and the combined carrier gas directed by carrier gas inlet lines 300 1 B and 300 2 B to the sensing chambers 70 1 B and 70 2 B in the first testing cell 70 1 and second testing cell 70 2 respectively.
  • Carrier gas flows through and exits each of the sensing chambers 70 1 B and 70 2 B through an outlet port (unnumbered) and is directed by dedicated outlet channels 300 1 B out and 300 2 B out respectively, to a common channel 300 5 in fluid communication with a target-analyte sensor 200 located external to the block manifold 100 .
  • Common channel 300 5 exits the block manifold 100 at outlet port 102 .
  • Particle filters 40 B wet and 40 B dry are preferably provided in the carrier gas wet line 300 0 B wet and carrier gas dry line 300 0 B dry respectively, for removing any entrained particulate matter from the carrier gas before it enters the block manifold 100 .
  • Target-analyte catalytic converters 30 B wet and 30 B dry are preferably provided in the carrier gas wet line 300 0 B wet and carrier gas dry line 300 0 B dry respectively, for converting any target-analyte in the carrier gas (e.g., O 2 ) to a molecular species (e.g., H 2 O when the target analyte is O 2 ) that will not be detected by the target-analyte sensor 200 .
  • the carrier gas e.g., O 2
  • a molecular species e.g., H 2 O when the target analyte is O 2
  • Capillary restrictors 60 1 A, 60 2 A, 60 1 B and 60 2 B are preferably provided in the test gas inlet lines 300 1 A and 300 2 A, and carrier gas inlet lines 300 1 B and 300 2 B respectively, for facilitating a consistent and equal flow of gas into the driving chambers 70 1 A and 70 2 A of the testing cells 70 1 and 70 2 , and the sensing chambers 70 1 B and 70 2 B of the testing cells 70 1 and 70 2 respectively.
  • the capillary restrictors 60 n are preferably side mounted onto the block manifold 100 .
  • Valves 80 1 B and 80 2 B are provided in the dedicated outlet channels 300 1 B out and 300 2 B out respectively, for selectively and mutually exclusively allowing passage of carrier gas, containing any target-analyte that has permeated through the test film F, from each of the sensing chambers 70 1 B and 70 2 B into sensing engagement with the sensor 200 .
  • the valves 80 1 B and 80 2 B vent carrier gas, containing any target-analyte that has permeated through the test film F, to atmosphere through vent ports 80 1 Bx and 80 2 Bx in the manifold 100 .
  • the valves 80 n B are preferably side mounted onto the block manifold 100 .
  • the instrument 10 depicted in FIG. 1 includes an optional channel conditioning feature.
  • Permeation testing instruments 10 employ a very low mass flow through rate through the gas flow lines 300 n of the instrument 10 to limit the creation of any pressure differentials in the instrument 10 that could impact humidification of the test and/or carrier gases or create a pressure-induced driving force across a test film F.
  • This low mass flow rate through the instrument 10 imposes a significant time delay between measurements from different testing cells 70 n as both the “stale” carrier gas contained in the length of the testing cell outlet line 300 n B out for the upcoming testing cell 70 n to be measured and the “inapplicable” carrier gas contained in the length of the shared outlet line 300 5 from the previously measured testing cell 70 n is flushed from the lines and replaced with fresh carrier gas, containing any target-analyte that has permeated through the test film F, from the upcoming testing cell 70 n .
  • a channel conditioning feature employs a cell selector channel conditioning valve 88 B in the shared outlet line 300 5 for allowing, in coordination with opening and closing of valves 80 n B for the upcoming and previous testing cells 70 n , for advanced venting of “stale” carrier gas contained in the length of the outlet line 300 n B out for the upcoming testing cell 70 n .
  • the cell selector channel conditioning valve 88 B is operable as between a flow-through state, in which carrier gas is directed to the sensor 200 , and a vent state, in which carrier gas is vented to atmosphere through a vent port 88 Bx in the block manifold 100 .
  • the cell selector channel conditioning valve 88 B is preferably side mounted to the block manifold 100 .
  • the instrument 10 depicted in FIG. 1 includes an optional rezero feature.
  • Rezero is a method of measuring residual target-analyte contained in the carrier gas during performance of testing that includes the steps of bypassing the test cell(s) 70 n and directly measuring the carrier gas target-analyte level, which is then subtracted from the measured transmission rate of the target-analyte level for each sample.
  • the rezero feature includes a rezero line 300 9 B upstream from the testing cells 70 n for bypassing the testing cells 70 n and carrying carrier gas directly to the sensor 200 .
  • a rezero valve 89 B is provided in the rezero line 300 9 B for selectively directing carrier gas to the sensor 200 or venting carrier gas from the block manifold 100 at vent port 89 Bx.
  • the rezero valve 89 B is preferably side mounted to the block manifold 100 .
  • a capillary restrictor 60 9 B is preferably provided in the carrier gas rezero line 300 9 B for facilitating a consistent and equal flow of carrier gas into the sensing chambers 70 1 B and 70 2 B of the testing cells 70 1 and 70 2 respectively.
  • the capillary restrictor 60 9 B is, as with the other capillary restrictors, preferably side mounted onto the block manifold 100 .
  • the sensor 200 is selected to measure the appropriate target-analyte (e.g., oxygen (O 2 ), carbon dioxide (CO 2 ) or water vapor (H 2 O)). Selection of a suitable sensor 200 is well within the knowledge and expertise of a person having routine skill in the art.
  • the sensor 200 is preferably a coulox sensor and is equipped with an exhaust valve 210 for preventing atmospheric contamination of the sensor when there is no flow of carrier gas to the sensor 200 .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Fluid Mechanics (AREA)
  • Quality & Reliability (AREA)
  • Combustion & Propulsion (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

A target-analyte permeation testing instrument (10) characterized by a block manifold (100) retaining the testing cells (70 n) of the instrument (10).

Description

    BACKGROUND
  • Permeation instruments are used to measure the transmission rate of a target analyte, such as oxygen, carbon dioxide or water vapor, through various samples, such as membranes, films, envelopes, bottles, packages, containers, etc. (hereinafter collectively referenced as “test films” for convenience). Typical test films are polymeric packaging films such as those constructed from low density polyethylene (LDPE), high density polyethylene (HDPE), oriented polypropylene (OPP), polyethylene terepthalate (PET), polyvinylidene chrloride (PVTDC), etc. Typically, the film to be tested is positioned within a test chamber to sealing separate the chamber into first and second chambers. The first chamber (commonly referenced as the driving or analyte chamber) is filled with a gas containing a known concentration of the target analyte (commonly referenced as a driving gas). The second chamber (commonly referenced as the sensing chamber) is flushed with an inert gas (commonly referenced as a carrier gas) to remove any target analyte from the cell. A sensor for the target analyte is placed in fluid communication with the sensing chamber for detecting the presence of target analyte that has migrated into the sensing chamber from the driving chamber through the test film. Exemplary permeation instruments for measuring the transmission rate of oxygen (O2), carbon dioxide (CO2) and water vapor (H2O) through test films are commercially available from Mocon, Inc. of Minneapolis, Minn. under the designations OXTRAN, PERMATRAN-C and PERMATRAN-W, respectively.
  • Permeation instruments are being used more often to measure ever decreasing concentrations of target-analyte, into the ppm or even ppb range, and are therefore extremely sensitive to even minute atmospheric contamination of the fluids used in the instrument. Permeation instruments employ an extensive network of fluid interconnections with numerous valves to achieve the desired choreographed flow of driving and carrier gas through the instrument, especially when the instrument employs a plurality of testing cells in fluid communication with a single common target-analyte sensor. Each fitting in the fluid transfer system of the instrument is a potential source of contamination as atmospheric oxygen, carbon dioxide and water vapor leak around or permeate through the seals on the fittings, especially as the seals on the fittings loosen over time.
  • Accordingly, a substantial need exists for a permeation instrument capable near elimination of atmospheric-induced contamination of the driving and carrier gases flowing through the instrument throughout the lifespan of the instrument.
    • SUMMARY OF THE INVENTION
  • The invention is a target-analyte permeation testing instrument characterized by a block manifold. The instrument has a target-analyte sensor and a plurality of test cells for measuring target-analyte permeation rate of a test film. Each test cell defines a testing chamber and is operable for retaining a test film to sealingly divide the testing chamber into a driving chamber and a sensing chamber. The block manifold is fixed to the plurality of cells and has a plurality of channels in fluid communication with the testing chamber of each cell, a pressurized source of driving gas, a pressurized source of inert gas, and a target-analyte sensor. The plurality of channels are configured and arranged to selectively carry driving gas from the pressurized source of driving gas to the driving chamber of each cell, carry driving gas from the driving chamber of each cell to a driving gas exit port in the manifold, selectively carry inert gas from the pressurized source of inert gas to the sensing chamber of each cell, and selectively carry inert gas from the sensing chamber of each cell to the target-analyte sensor.
  • The block manifold can include a refillable first water reservoir in selective fluid communication with the source of driving gas and in fluid communication with the driving chamber of each cell, and a second refillable water reservoir in selective fluid communication with the source of inert gas and in fluid communication with the sensing chamber of each cell.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic plumbing diagram of one embodiment of the invention.
    •  DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
  • Nomenclature Table
    10 Target-Analyte Permeation Testing Instrument
    20A Test Gas RH Control Valve
    20B Carrier Gas RH Control Valve
    30Bwet Catalyst Chamber in Wet Carrier Gas Line
    30Bdry Catalyst Chamber in Dry Carrier Gas Line
    40Awet Particle Filter in Wet Test Gas Line
    40Adry Particle Filter in Dry Test Gas Line
    40Bwet Particle Filter in Wet Carrier Gas Line
    40Bdry Particle Filter in Dry Carrier Gas Line
    50A Water Reservoir for Test Gas
    50B Water Reservoir for Carrier Gas
    60n Capillary Restrictors
    601A Capillary Restrictor for Test Gas Channel to First
    Test Cell
    602A Capillary Restrictor for Test Gas Channel to Second
    Test Cell
    601B Capillary Restrictor for Carrier Gas Channel to First
    Test Cell
    602B Capillary Restrictor for Carrier Gas Channel to Second
    Test Cell
    609B Capillary Restrictor for Carrier Gas Channel to Rezero
    Valve
    70n Testing Cells
    70nA Driving Chamber of Test Cell n
    70nB Sensing Chamber of Test Cell n
    70nAx Exhaust from Driving Chamber of Test Cell n
    701 First Testing Cells
    701A Driving Chamber of First Test Cell
    701Ax Exhaust from Driving Chamber of First Test Cell
    701B Sensing Chamber of First Test Cell
    702 Second Testing Cells
    702A Driving Chamber of Second Test Cell
    702Ax Exhaust from Driving Chamber of Second Test Cell
    702B Sensing Chamber of Second Test Cell
    80nB Carrier Gas Sensing Chamber Exit Valve for Testing Cell n
    801B First Test Cell Carrier Gas Exit Valve
    801Bx Exhaust from Sensing Chamber of First Test Cell
    802B Second Test Cell Carrier Gas Exit Valve
    802Bx Exhaust from Sensing Chamber of Second Test Cell
    88B Cell Selector Channel Conditioning Valve
    88Bx Exhaust from Cell Selector Channel Conditioning Valve
    89B Rezero Valve
    89Bx Exhaust from Rezero Valve
    100 Block Manifold
    101Awet Test Gas Water Reservoir Inlet Port
    101Adry Test Gas Water Reservoir Bypass Inlet Port
    101Bwet Carrier Gas Water Reservoir Inlet Port
    101Bdry Carrier Gas Water Reservoir Bypass Inlet Port
    102 Carrier Gas Outlet Port to Sensor
    200 Target-Analyte Sensor
    210 Sensor Exhaust Valve
    300n Gas Flow Line n
    3000Awet Test Gas Water Reservoir Inlet Line
    3000Adry Test Gas Water Reservoir Bypass Inlet Line
    3000Bwet Carrier Gas Water Reservoir Inlet Line
    3000Bdry Carrier Gas Water Reservoir Bypass Inlet Line
    3001Ain Test Gas First Testing Cell Inlet Line
    3001Bin Carrier Gas First Testing Cell Inlet Line
    3002Ain Test Gas Second Testing Cell Inlet Line
    3002Bin Carrier Gas Second Testing Cell Inlet Line
    300nBout Carrier Gas Outlet Line for Testing Cell n
    3001Bout Carrier Gas First Testing Cell Outlet Line
    3002Bout Carrier Gas Second Testing Cell Outlet Line
    3005 Shared Carrier Gas Testing Cell Outlet Line
    3009B Carrier Gas Rezero Line
    A Driving or Test Gas Source
    B Inert or Carrier Gas Source
    F Test Film
    • DESCRIPTION
  • Referring generally to FIG. 1, the invention is a target-analyte permeation testing instrument 10 characterized by a block manifold 100, preferably a solid block cast metal manifold 100 into which the appropriate channels and compartments are formed. The instrument 10 has a target-analyte sensor 200 and a plurality of test cells 70 n for measuring target-analyte permeation rate of test films Fn. Each test cell 70 n defines a testing chamber and is operable for retaining a test film F to sealingly divide the testing chamber into a driving chamber 70 nA and a sensing chamber 70 nB. The cells 70 n are secured to the block manifold 100. The block manifold 100 has a plurality of channels 300 n in fluid communication with the testing chamber of each cell 70 n, a pressurized source of driving gas A, a pressurized source of inert gas B, and a target-analyte sensor 200. The plurality of channels 300 n are configured and arranged to selectively carry driving gas from the pressurized source of driving gas A to the driving chamber 70 nA of each cell 70 n, carry driving gas from the driving chamber 70 nA of each cell 70 n to a driving gas exit port 70 nAx in the manifold 100, selectively carry inert gas from the pressurized source of inert gas B to the sensing chamber 70 nB of each cell 70 n, and selectively carry inert gas from the sensing chamber 70 nB of each cell 70 n to a the target-analyte sensor 200.
  • The block manifold 100 can include a refillable first water reservoir 50A in selective fluid communication with the source of driving gas A and in fluid communication with the driving chamber 70 nA of each cell 70 n, and a second refillable water reservoir 50B in selective fluid communication with the source of inert gas B and in fluid communication with the sensing chamber 70 nB of each cell 70 n.
  • An exemplary two-cell embodiment of the invention 10 is depicted in FIG. 1. The permeation testing instrument 10 preferably includes humidification systems for each of the test gas and carrier gas, such as described in U.S. Pat. Nos. 7,578,208 and 7,908,936, the disclosures of which are hereby incorporated by reference.
  • A source of dry test gas A fluidly communicates with a first humidification system that includes a wet line 300 0Awet in fluid communication with a water reservoir 50A and a dry line 300 0Adry that bypasses the water reservoir 50A. A test gas RH control valve 20A controls flow of test gas through the wet line 300 0Awet and dry line 300 0Adry according to a duty cycle for achieving the desired humidification level of the test gas.
  • The test gas wet line 300 0Awet enters the block manifold 100 at inlet port 101Awet. The test gas dry line 300 0Adry enters the block manifold 100 at inlet port 101Adry.
  • Upon exiting the water reservoir 50A, humidified test gas in the wet line 300 0Awet is combined with dry test gas in the dry line 300 0Adry and the combined test gas directed by test gas inlet lines 300 1A and 300 2A to the driving chambers 70 1A and 70 2A in the first testing cell 70 1 and second testing cell 70 2 respectively. Test gas flows through and exits each of the driving chambers 70 1A and 70 2A through an outlet port (unnumbered) and is vented from the block manifold at vent ports 70 1Ax and 70 2Ax respectively.
  • Particle filters 40Awet and 40Adry are preferably provided in the test gas wet line 300 0Awet and test gas dry line 300 0Adry respectively, for removing any entrained particulate matter from the test gas before it enters the block manifold 100.
  • In a similar fashion, a source of dry carrier gas B fluidly communicates with a second humidification system that includes a wet line 300 0Bwet in fluid communication with a water reservoir 50B and a dry line 300 0Bdry that bypasses the water reservoir 50B. A carrier gas RH control valve 20B controls flow of carrier gas through the wet line 300 0Bwet and dry line 300 0Bdry according to a duty cycle for achieving the desired humidification level of the carrier gas.
  • The carrier gas wet line 300 0Bwet enters the block manifold 100 at inlet port 101Bwet. The carrier gas dry line 300 0Bdry enters the block manifold 100 at inlet port 101Bdry.
  • Upon exiting the water reservoir 50B, humidified carrier gas in the wet line 300 0Bwet is combined with dry carrier gas in the dry line 300 0Bdry and the combined carrier gas directed by carrier gas inlet lines 300 1B and 300 2B to the sensing chambers 70 1B and 70 2B in the first testing cell 70 1 and second testing cell 70 2 respectively. Carrier gas flows through and exits each of the sensing chambers 70 1B and 70 2B through an outlet port (unnumbered) and is directed by dedicated outlet channels 300 1Bout and 300 2Bout respectively, to a common channel 300 5 in fluid communication with a target-analyte sensor 200 located external to the block manifold 100.
  • Common channel 300 5 exits the block manifold 100 at outlet port 102.
  • Particle filters 40Bwet and 40Bdry are preferably provided in the carrier gas wet line 300 0Bwet and carrier gas dry line 300 0Bdry respectively, for removing any entrained particulate matter from the carrier gas before it enters the block manifold 100.
  • Target-analyte catalytic converters 30Bwet and 30Bdry are preferably provided in the carrier gas wet line 300 0Bwet and carrier gas dry line 300 0Bdry respectively, for converting any target-analyte in the carrier gas (e.g., O2) to a molecular species (e.g., H2O when the target analyte is O2) that will not be detected by the target-analyte sensor 200.
  • Capillary restrictors 60 1A, 60 2A, 60 1B and 60 2B are preferably provided in the test gas inlet lines 300 1A and 300 2A, and carrier gas inlet lines 300 1B and 300 2B respectively, for facilitating a consistent and equal flow of gas into the driving chambers 70 1A and 70 2A of the testing cells 70 1 and 70 2, and the sensing chambers 70 1B and 70 2B of the testing cells 70 1 and 70 2 respectively. The capillary restrictors 60 n are preferably side mounted onto the block manifold 100.
  • Valves 80 1B and 80 2B are provided in the dedicated outlet channels 300 1Bout and 300 2Bout respectively, for selectively and mutually exclusively allowing passage of carrier gas, containing any target-analyte that has permeated through the test film F, from each of the sensing chambers 70 1B and 70 2B into sensing engagement with the sensor 200. When closed, the valves 80 1B and 80 2B vent carrier gas, containing any target-analyte that has permeated through the test film F, to atmosphere through vent ports 80 1Bx and 80 2Bx in the manifold 100. The valves 80 nB are preferably side mounted onto the block manifold 100.
  • The instrument 10 depicted in FIG. 1 includes an optional channel conditioning feature. Permeation testing instruments 10 employ a very low mass flow through rate through the gas flow lines 300 n of the instrument 10 to limit the creation of any pressure differentials in the instrument 10 that could impact humidification of the test and/or carrier gases or create a pressure-induced driving force across a test film F. This low mass flow rate through the instrument 10 imposes a significant time delay between measurements from different testing cells 70 n as both the “stale” carrier gas contained in the length of the testing cell outlet line 300 nBout for the upcoming testing cell 70 n to be measured and the “inapplicable” carrier gas contained in the length of the shared outlet line 300 5 from the previously measured testing cell 70 n is flushed from the lines and replaced with fresh carrier gas, containing any target-analyte that has permeated through the test film F, from the upcoming testing cell 70 n. A channel conditioning feature employs a cell selector channel conditioning valve 88B in the shared outlet line 300 5 for allowing, in coordination with opening and closing of valves 80 nB for the upcoming and previous testing cells 70 n, for advanced venting of “stale” carrier gas contained in the length of the outlet line 300 nBout for the upcoming testing cell 70 n. The cell selector channel conditioning valve 88B is operable as between a flow-through state, in which carrier gas is directed to the sensor 200, and a vent state, in which carrier gas is vented to atmosphere through a vent port 88Bx in the block manifold 100. The cell selector channel conditioning valve 88B is preferably side mounted to the block manifold 100.
  • The instrument 10 depicted in FIG. 1 includes an optional rezero feature. Rezero is a method of measuring residual target-analyte contained in the carrier gas during performance of testing that includes the steps of bypassing the test cell(s) 70 n and directly measuring the carrier gas target-analyte level, which is then subtracted from the measured transmission rate of the target-analyte level for each sample.
  • The rezero feature includes a rezero line 300 9B upstream from the testing cells 70 n for bypassing the testing cells 70 n and carrying carrier gas directly to the sensor 200. A rezero valve 89B is provided in the rezero line 300 9B for selectively directing carrier gas to the sensor 200 or venting carrier gas from the block manifold 100 at vent port 89Bx. The rezero valve 89B is preferably side mounted to the block manifold 100.
  • A capillary restrictor 60 9B is preferably provided in the carrier gas rezero line 300 9B for facilitating a consistent and equal flow of carrier gas into the sensing chambers 70 1B and 70 2B of the testing cells 70 1 and 70 2 respectively. The capillary restrictor 60 9B is, as with the other capillary restrictors, preferably side mounted onto the block manifold 100.
  • The sensor 200 is selected to measure the appropriate target-analyte (e.g., oxygen (O2), carbon dioxide (CO2) or water vapor (H2O)). Selection of a suitable sensor 200 is well within the knowledge and expertise of a person having routine skill in the art. The sensor 200 is preferably a coulox sensor and is equipped with an exhaust valve 210 for preventing atmospheric contamination of the sensor when there is no flow of carrier gas to the sensor 200.

Claims (6)

I claim:
1. A target-analyte permeation testing instrument for measuring target-analyte permeation rate of a test film in test cell, the instrument having a target-analyte sensor and a plurality of test cells each defining a testing chamber with each test cell operable for retaining a test film to sealingly divide the testing chamber into a driving chamber and a sensing chamber, the target-analyte permeation testing instrument characterized by a block manifold (-) fixed to the plurality of cells, and (-) having a plurality of channels in fluid communication with the testing chamber of each cell, a pressurized source of driving gas, a pressurized source of inert gas, and the target-analyte sensor, wherein the plurality of channels are configured and arranged to (i) selectively carry driving gas from the pressurized source of driving gas to the driving chamber of each cell, (ii) carry driving gas from the driving chamber of each cell to a driving gas exit port in the manifold, (iii) selectively carry inert gas from the pressurized source of inert gas to the sensing chamber of each cell, and (iv) selectively carry inert gas from the sensing chamber of each cell to the target-analyte sensor.
2. The target-analyte permeation testing instrument of claim 1 wherein the block manifold further includes a refillable first water reservoir in selective fluid communication with the source of driving gas and in fluid communication with the driving chamber of each cell, and a second refillable water reservoir in selective fluid communication with the source of inert gas and in fluid communication with the sensing chamber of each cell.
3. The target-analyte permeation testing instrument of claim 1 wherein the block manifold is constructed from a single unitary metal block.
4. The target-analyte permeation testing instrument of claim 1 wherein the channels in fluid communication with the pressurized source of driving gas and the driving chamber of each cell are in fluid communication with at least one block mounted valve operable for effecting selective delivery of driving gas to the driving chambers of the cells.
5. The target-analyte permeation testing instrument of claim 1 wherein the channels in fluid communication with the pressurized source of inert gas and the sensing chamber of each cell are in fluid communication with at least one block mounted valve operable for effecting selective delivery of inert gas to the sensing chambers of the cells.
6. The target-analyte permeation testing instrument of claim 1 wherein the channels in fluid communication with the sensing chamber of each cell and the target-analyte sensor are in fluid communication with at least one block mounted valve operable for effecting selective delivery of inert gas from the sensing chambers of the cells to the target-analyte sensor.
US15/039,100 2014-02-24 2015-02-24 Rugged target-analyte permeation testing instrument employing a consolidating block manifold Abandoned US20170023463A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/039,100 US20170023463A1 (en) 2014-02-24 2015-02-24 Rugged target-analyte permeation testing instrument employing a consolidating block manifold

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201461943772P 2014-02-24 2014-02-24
US15/039,100 US20170023463A1 (en) 2014-02-24 2015-02-24 Rugged target-analyte permeation testing instrument employing a consolidating block manifold
PCT/US2015/017193 WO2015127413A1 (en) 2014-02-24 2015-02-24 Rugged target-analyte permeation testing instrument employing a consolidating block manifold

Publications (1)

Publication Number Publication Date
US20170023463A1 true US20170023463A1 (en) 2017-01-26

Family

ID=53879127

Family Applications (3)

Application Number Title Priority Date Filing Date
US15/038,810 Active 2035-07-17 US9958373B2 (en) 2014-02-24 2015-02-24 Protocol adaptive computer controlled target-analyte permeation testing instrument
US15/039,100 Abandoned US20170023463A1 (en) 2014-02-24 2015-02-24 Rugged target-analyte permeation testing instrument employing a consolidating block manifold
US15/100,448 Active 2035-11-12 US10488318B2 (en) 2014-02-24 2015-02-24 Target-analyte permeation testing instrument with sensor feed line conditioning system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US15/038,810 Active 2035-07-17 US9958373B2 (en) 2014-02-24 2015-02-24 Protocol adaptive computer controlled target-analyte permeation testing instrument

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/100,448 Active 2035-11-12 US10488318B2 (en) 2014-02-24 2015-02-24 Target-analyte permeation testing instrument with sensor feed line conditioning system

Country Status (4)

Country Link
US (3) US9958373B2 (en)
EP (5) EP3111229B1 (en)
JP (4) JP2017509877A (en)
WO (3) WO2015127430A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10067027B2 (en) * 2016-03-04 2018-09-04 Robert Bosch Gmbh Test methodology to reduce false rejections and increase number of containers tested for tightness
CN107121373A (en) * 2017-05-05 2017-09-01 湖北工业大学 A kind of permeability test device for testing gas-liquid mixed media
CN110320328A (en) * 2019-06-21 2019-10-11 珠海格力电器股份有限公司 Formaldehyde concentration detection method and device and air purifier
EP4386357A1 (en) 2022-12-12 2024-06-19 Mocon, Inc. Capture vessel cartridge for permeation testing of prefilled packages and containers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107696A (en) * 1990-12-19 1992-04-28 Modern Controls, Inc. Device for measuring gas permeation
US7578208B2 (en) * 2006-12-15 2009-08-25 Mocon, Inc. System and method for generating a gas sample of known and adjustable relative humidity

Family Cites Families (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO115503B (en) * 1966-07-21 1968-10-14 Sentralinst For Ind Forskning
US3590634A (en) 1969-05-05 1971-07-06 Stanford Research Inst Instrument for determining permeation rates through a membrane
US3618361A (en) 1970-03-02 1971-11-09 Dohrmann Instr Co Method and apparatus for determining gas permeability of film
JPS5459194A (en) * 1977-10-20 1979-05-12 Sankosha Co Ltd Gas leakage alarm
US4151738A (en) * 1977-11-03 1979-05-01 General Electric Company Toxic gas monitor having automatic calibration
US4464927A (en) * 1982-01-07 1984-08-14 Reid Philip L Apparatus for measuring gas transmission through films
JPS60109044U (en) * 1983-12-28 1985-07-24 大阪瓦斯株式会社 Identification type gas detection device
JPS6131952A (en) * 1984-07-25 1986-02-14 Horiba Ltd Concentration meter with automatic calibration function
US4667153A (en) 1985-05-17 1987-05-19 Doyle James H Automatic calibrator
US4656865A (en) 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
JPH0788787B2 (en) 1986-01-17 1995-09-27 マツダ株式会社 Air-fuel ratio controller for engine
JPS62165545U (en) * 1986-04-11 1987-10-21
JPS6337213A (en) * 1986-07-31 1988-02-17 Shimadzu Corp automatic calibration device
JP2601816B2 (en) * 1987-03-25 1997-04-16 三井石油化学工業 株式会社 Gas permeation tester
US4791822A (en) * 1987-05-20 1988-12-20 Stim Lab, Inc. Cell assembly for determining conductivity and permeability
US4922758A (en) * 1987-05-20 1990-05-08 Stim Lab, Inc. Cell assembly for determining conductivity and permeability
US4852389A (en) * 1988-03-28 1989-08-01 Modern Controls, Inc. System for controlled humidity tests
US4944180A (en) * 1988-08-26 1990-07-31 The Dow Chemical Company Permeation measurement device
US5088316A (en) * 1989-09-27 1992-02-18 Versar, Inc. Apparatus and method for testing material samples for gas diffusion characteristics
JP2507099B2 (en) * 1989-11-20 1996-06-12 松下精工株式会社 Carbon dioxide concentration detector
JPH0694838A (en) * 1992-09-14 1994-04-08 Toshiba Corp Dust monitor
US5361625A (en) 1993-04-29 1994-11-08 Ylvisaker Jon A Method and device for the measurement of barrier properties of films against gases
JP3329624B2 (en) * 1995-07-03 2002-09-30 理研計器株式会社 Gas alarm
JP3183387B2 (en) * 1996-06-07 2001-07-09 矢崎総業株式会社 Correction method of signal baseline value of carbon dioxide measurement unit and carbon dioxide measurement unit
US5908600A (en) * 1996-07-23 1999-06-01 Apl Group International, Llc Monitor for detecting hydrocarbons and other gases in an open area
US6066243A (en) 1997-07-22 2000-05-23 Diametrics Medical, Inc. Portable immediate response medical analyzer having multiple testing modules
JPH11295192A (en) * 1998-04-14 1999-10-29 Nippon Steel Corp Gas sampling analyzer and gas sampling analysis method
JP2000310589A (en) * 1999-04-27 2000-11-07 Ricoh Co Ltd Gas permeable quantity measuring apparatus for film
AU7590300A (en) * 1999-09-20 2001-04-24 Roche Diagnostics Corporation Small volume biosensor for continuous analyte monitoring
US7045054B1 (en) * 1999-09-20 2006-05-16 Roche Diagnostics Corporation Small volume biosensor for continuous analyte monitoring
AU1218401A (en) * 1999-10-20 2001-04-30 Cvd Systems, Inc. Fluid processing system
JP2002048703A (en) * 2000-07-31 2002-02-15 Toyo Seiki Seisakusho:Kk Gas permeability measuring device
US20020045243A1 (en) 2000-09-15 2002-04-18 Laska Ronald C. Fluid cartridge and method
GB0030929D0 (en) * 2000-12-19 2001-01-31 Inverness Medical Ltd Analyte measurement
US6612143B1 (en) 2001-04-13 2003-09-02 Orametrix, Inc. Robot and method for bending orthodontic archwires and other medical devices
US6588250B2 (en) * 2001-04-27 2003-07-08 Edwards Systems Technology, Inc. Automatic calibration mode for carbon dioxide sensor
US20030019747A1 (en) 2001-07-19 2003-01-30 John Saffell Manufacturing method with integrated test and validation procedures
US6766682B2 (en) * 2001-10-19 2004-07-27 Desert Cryogenics Llc Precise measurement system for barrier materials
US20040040372A1 (en) * 2002-08-30 2004-03-04 George Plester Method for determining the permeation of gases into or out of plastic packages and for determination of shelf-life with respect to gas permeation
ITBO20030411A1 (en) 2003-07-03 2005-01-04 Stk Stocchi Progetti S R L TAP FOR STERILE FILLING OF FOOD LIQUIDS.
JP3956919B2 (en) 2003-08-20 2007-08-08 ヤマハ株式会社 Peltier module manufacturing method
US7178384B2 (en) 2004-02-04 2007-02-20 General Atomics Method and apparatus for measuring ultralow permeation
JP4591105B2 (en) * 2004-05-31 2010-12-01 横河電機株式会社 Calibration method
WO2006002500A1 (en) * 2004-07-06 2006-01-12 K.U.Leuven Research And Development High throughput screening for rapid development of membranes and membrane processes
JP4381271B2 (en) 2004-09-30 2009-12-09 南島酒販株式会社 Organic acid-enhanced moromi vinegar by enzymatic dissolution of Awamori black candy and its production method
JP4619195B2 (en) * 2005-05-18 2011-01-26 エア・ウォーター株式会社 Trace impurity analysis method
US20070271998A1 (en) * 2006-05-26 2007-11-29 Markes International Limited Apparatus for testing the emissions, content or permeability of materials
US7555934B2 (en) * 2006-09-07 2009-07-07 3M Innovative Properties Company Fluid permeation testing apparatus employing mass spectrometry
US7552620B2 (en) * 2006-09-07 2009-06-30 3M Innovative Properties Company Fluid permeation testing method employing mass spectrometry
JP5084395B2 (en) * 2007-08-10 2012-11-28 紀本電子工業株式会社 Gas measuring instrument
US7993587B2 (en) 2008-05-02 2011-08-09 Mocon, Inc. Humidity control system for the sensing cell of an analyte permeation testing instrument
US20100063901A1 (en) 2008-09-10 2010-03-11 Sean Paul Brierley Oilfield Inventory control and Communication System
US8424367B2 (en) 2009-03-04 2013-04-23 University Of South Carolina Systems and methods for measurement of gas permeation through polymer films
WO2010127052A1 (en) * 2009-04-28 2010-11-04 Abbott Diabetes Care Inc. Dynamic analyte sensor calibration based on sensor stability profile
US9075029B2 (en) 2011-01-31 2015-07-07 Scott Technologies, Inc. System and method for automatically adjusting gas sensor settings and parameters
ES2964546T3 (en) 2011-04-15 2024-04-08 Dexcom Inc Advanced analyte sensor calibration and error detection
US20120330596A1 (en) 2011-06-21 2012-12-27 General Electric Company Self-calibrating sensor, system, and computer program product
FR2982949A1 (en) * 2011-11-23 2013-05-24 Diam Bouchage DEVICE FOR MEASURING PERMEABILITY OF BOTTLE CAPS AND CORRESPONDING METHOD
JP5814761B2 (en) * 2011-12-07 2015-11-17 アズビル株式会社 CO2 concentration baseline correction apparatus and method
WO2013143029A1 (en) * 2012-03-27 2013-10-03 济南兰光机电技术有限公司 Organic gas transmission rate testing apparatus
US8821614B1 (en) * 2012-09-28 2014-09-02 U.S. Department Of Energy Constant pressure high throughput membrane permeation testing system
DE102013002724B3 (en) * 2013-02-12 2014-07-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and device for determining the permeation rate of barrier materials
CN106662559B (en) 2014-02-19 2019-09-27 马林克罗特医疗产品知识产权公司 Method for compensating for long term sensitivity drift of an electrochemical gas sensor exposed to nitric oxide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107696A (en) * 1990-12-19 1992-04-28 Modern Controls, Inc. Device for measuring gas permeation
US7578208B2 (en) * 2006-12-15 2009-08-25 Mocon, Inc. System and method for generating a gas sample of known and adjustable relative humidity

Also Published As

Publication number Publication date
WO2015127430A3 (en) 2016-02-18
US9958373B2 (en) 2018-05-01
EP3111204A4 (en) 2017-12-06
EP3106877B1 (en) 2021-04-07
WO2015127415A1 (en) 2015-08-27
JP6949918B2 (en) 2021-10-13
EP3111229A4 (en) 2017-11-22
EP3106878A1 (en) 2016-12-21
JP6559147B2 (en) 2019-08-14
JP2017509876A (en) 2017-04-06
JP2017506346A (en) 2017-03-02
EP3111229A2 (en) 2017-01-04
EP3106877A1 (en) 2016-12-21
EP3111230A4 (en) 2017-12-06
EP3111229B1 (en) 2021-12-01
EP3111204A1 (en) 2017-01-04
JP6600638B2 (en) 2019-10-30
EP3111230A1 (en) 2017-01-04
WO2015127413A1 (en) 2015-08-27
JP2019219428A (en) 2019-12-26
JP2017509877A (en) 2017-04-06
US20170030820A1 (en) 2017-02-02
US10488318B2 (en) 2019-11-26
WO2015127430A2 (en) 2015-08-27
US20160299049A1 (en) 2016-10-13
EP3111230B1 (en) 2021-02-24

Similar Documents

Publication Publication Date Title
US7993587B2 (en) Humidity control system for the sensing cell of an analyte permeation testing instrument
US20170023463A1 (en) Rugged target-analyte permeation testing instrument employing a consolidating block manifold
US20090320564A1 (en) Method and Device for Measuring the Gas Permeability Through Films and Walls of Containers
JP2010190751A (en) Gas permeability measuring device and gas permeability measuring method for film material
JP2010249609A (en) Instrument and method for measuring permeation amount of steam
JP4596928B2 (en) Gas permeability measuring device and gas permeability measuring method for film material
JP6281915B2 (en) Gas permeability measuring device
KR20150110779A (en) Gas-barrier-performance evaluation device and evaluation method
CN111551477B (en) Barrier performance test system and method
JP2016223924A (en) Method and device for measuring gas permeation amount
JP5134626B2 (en) Method for measuring gas permeability of container and sealing member
US8627710B2 (en) Gas probe for sampling gas molecules from a fluid and a system comprising the gas probe
US20240091780A1 (en) Analyte permeation testing instrument with test sample peripheral edge sealing surround
US8074683B1 (en) Valve system for a coulometric analyte sensing instrument
JP5275473B2 (en) Water vapor permeation measuring device and water vapor permeation measuring method
US20100051481A1 (en) Coulometric analyte sensing instrument with an analyte-consuming sensor in a closed cell

Legal Events

Date Code Title Description
AS Assignment

Owner name: MOCON, INC., MINNESOTA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAYER, DANIEL W;BEREZOVSKIY, SLAVA A;SIGNING DATES FROM 20160913 TO 20160915;REEL/FRAME:040075/0612

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION