ASTM D7607/D7607M-19
(Test Method)Standard Test Method for Analysis of Oxygen in Gaseous Fuels (Electrochemical Sensor Method)
Standard Test Method for Analysis of Oxygen in Gaseous Fuels (Electrochemical Sensor Method)
SIGNIFICANCE AND USE
5.1 This test method is primarily used to monitor the concentration of oxygen in gases to verify gas quality for operational needs and contractual obligations. Oxygen content is a major factor influencing internal corrosion, fuel quality, gas quality, and user and operator safety.
SCOPE
1.1 This test method is for the determination of oxygen (O2) in gaseous fuels and fuel type gases. It is applicable to the measurement of oxygen in natural gas and other gaseous fuels. This method can be used to measure oxygen in helium, hydrogen, nitrogen, argon, carbon dioxide, mixed gases, process gases, and ambient air. The applicable range is 0.1 ppm(v) to 25 % by volume.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7607/D7607M − 19
Standard Test Method for
Analysis of Oxygen in Gaseous Fuels (Electrochemical
1
Sensor Method)
This standard is issued under the fixed designation D7607/D7607M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope Determine the Precision of a Test Method
1.1 This test method is for the determination of oxygen (O )
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3. Terminology
in gaseous fuels and fuel type gases. It is applicable to the
3.1 For general terminology, see Terminology D4150.
measurement of oxygen in natural gas and other gaseous fuels.
This method can be used to measure oxygen in helium,
3.2 Definitions:
hydrogen, nitrogen, argon, carbon dioxide, mixed gases, pro-
3.2.1 electrochemical sensor, n—a chemical sensor that
cess gases, and ambient air.The applicable range is 0.1 ppm(v)
quantitatively measures an analyte by the electrical output
to 25 % by volume.
produced by the sensor.
1.2 Units—The values stated in either SI units or inch-
3.2.2 span calibration, n—the adjustment of the transmitter
pound units are to be regarded separately as standard. The
electronics to the sensor’s signal output for a given oxygen
values stated in each system are not necessarily exact equiva-
standard.
lents; therefore, to ensure conformance with the standard, each
3.2.3 zero calibration, n—the adjustment of the transmitter
system shall be used independently of the other, and values
electronics to the sensor’s signal output for a sample gas
from the two systems shall not be combined.
containing less than 0.1 ppm(v) oxygen.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 Measurement of oxygen is accomplished by comparing
priate safety, health, and environmental practices and deter-
the electrical signal produced by an unknown sample with that
mine the applicability of regulatory limitations prior to use.
of a known standard using an oxygen specific electrochemical
1.4 This international standard was developed in accor-
sensor. A gaseous sample at constant flow and temperature is
dance with internationally recognized principles on standard-
passed over the electrochemical cell. Oxygen diffuses into the
ization established in the Decision on Principles for the
sensor and reacts chemically at the sensing electrode to
Development of International Standards, Guides and Recom-
produce an electrical current output proportional to the oxygen
mendations issued by the World Trade Organization Technical
concentration in the gas phase. Experience has shown that the
Barriers to Trade (TBT) Committee.
types of sensors supplied with equipment used in this standard
typically have a linear response over the ranges of application
2. Referenced Documents
which remains stable during the sensor’s useful life. The
2
2.1 ASTM Standards:
analyzer consists of a sensor, a sample flow system, and the
D4150 Terminology Relating to Gaseous Fuels
electronics to accurately determine the sensor signal.
E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
5. Significance and Use
E691 Practice for Conducting an Interlaboratory Study to
5.1 This test method is primarily used to monitor the
concentration of oxygen in gases to verify gas quality for
1 operational needs and contractual obligations. Oxygen content
ThistestmethodisunderthejurisdictionofASTMCommitteeD03onGaseous
Fuels and is the direct responsibility of Subcommittee D03.12 on On-Line/At-Line isamajorfactorinfluencinginternalcorrosion,fuelquality,gas
Analysis of Gaseous Fuels.
quality, and user and operator safety.
Current edition approved Nov. 15, 2019. Published January 2020. Originally
ε1
approved in 2011. Last previous edition approved in 2011 as D7607/D7607M–11 .
6. Interferences
DOI: 10.1520/D7607_D7607M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Interfering gases such as oxides of sulfur, oxides of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
nitrogen, and hydrogen sulfide can produce false readings and
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. reduce the expected life of the sensor. Scrubbers are used to
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: D7607/D7607M − 11 D7607/D7607M − 19
Standard Test Method for
Analysis of Oxygen in Gaseous Fuels (Electrochemical
1
Sensor Method)
This standard is issued under the fixed designation D7607/D7607M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—This standard was revised editorially in October 2013 to reflect dual designation.
1. Scope
1.1 This test method is for the determination of oxygen (O ) in gaseous fuels and fuel type gases. It is applicable to the
2
measurement of oxygen in natural gas and other gaseous fuels. This method can be used to measure oxygen in helium, hydrogen,
nitrogen, argon, carbon dioxide, mixed gases, process gases, and ambient air. The applicable range is 0.1 ppm(v) to 25%25 % by
volume.
1.2 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated
in each system mayare not benecessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall
be used independently of the other. Combiningother, and values from the two systems may result in non-conformance with the
standard.shall not be combined.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
D4150 Terminology Relating to Gaseous Fuels
D5503E177 Practice for Natural Gas Sample-Handling and Conditioning Systems for Pipeline InstrumentationUse of the Terms
Precision and Bias in ASTM Test Methods (Withdrawn 2017)
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 For general terminology, see Terminology D4150.
3.2 Definitions:
3.2.1 electrochemical sensor—sensor, n—Aa chemical sensor that quantitatively measures an analyte by the electrical output
produced by the sensor.
3.2.2 span calibration—calibration, n—Thethe adjustment of the transmitter electronics to the sensor’s signal output for a given
oxygen standard.
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This test method is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.12 on On-Line/At-Line
Analysis of Gaseous Fuels.
Current edition approved June 1, 2011Nov. 15, 2019. Published July 2011January 2020. Originally approved in 2011. Last previous edition approved in 2011 as
ε1
D7607D7607/D7607M–11.–11 . DOI: 10.1520/D7607_D7607M-11E01.10.1520/D7607_D7607M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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D7607/D7607M − 19
3.2.3 zero calibration—calibration, n—Thethe adjustment of the transmitter electronics to the sensor’s signal output for a
sample gas containing less than 0.1ppm(v)0.1 ppm(v) oxygen.
4. Summary of Test Method
4.1 Measurement of oxygen is accomplished by comparing the electrical signal produced by an unknown sample with that of
a known standard using an oxygen specific electrochemical sensor. A gaseous sample at constant flow and temperature is passed
over the electrochemical cell. Oxygen diffuses into the sensor and reacts chemically at the sensing electrode to produce an electrical
current output proportional to the o
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