SIST ISO 6879:1997

Air quality - Performance characteristics and related concepts for air quality measuring methods

Contains terms and definitions of performance characteristics related to air quality measuring methods. Does not include specific methods for determining air quality or obtaining representative samples.

Qualité de l'air - Caractéristiques de fonctionnement et concepts connexes pour les méthodes de mesurage de la qualité de l'air

Kakovost zraka - Delovne karakteristike in z njimi povezani koncepti za metode merjenja kakovosti zraka

General Information

• Status: Withdrawn
• Publication Date: 31-Jul-1997
• Withdrawal Date: 02-Nov-2011
• ICS: 13.040.01 - Air quality in general
• Technical Committee: KAZ - Air quality
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 02-Nov-2011
• Due Date: 25-Nov-2011
• Completion Date: 03-Nov-2011
• Ref Project: ISO 6879:1995 - Air quality — Performance characteristics and related concepts for air quality measuring methods

Relations

• Replaced By: SIST EN ISO 9169:2007 - Air quality - Definition and determination of performance characteristics of an automatic measuring system (ISO 9169:2006)
• Effective Date: 01-Dec-2011

Standards Content (Sample)

INTERNATIONAL IS0
STANDARD
6879
Second edition
1995-12-15
Air quality
- Performance characteristics
and related concepts for air quality
measuring methods
Qua/it6 de / ‘air - Caractkristiques de fonctionnement et concepts
connexes pour /es m&hodes de mesurage de la qua/S de / ‘air
Reference number
IS0 6879: 1995(E)

---------------------- Page: 1 ----------------------
IS0 6879: 1995(E)
Foreword
IS0 (the lnternational Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 6879 was prepared by Technical Committee
lSO/TC 146, Air quality, Subcommittee SC 4, Genera/ aspects.
This second edition cancels and replaces the first edition
(IS0 6879:1983), which has been technically revised.
Annex A of this International Standard is for information only.
0 IS0 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland

---------------------- Page: 2 ----------------------
0 IS0 IS0 6879:1995(E)
Introduction
This International Standard which comprises definitions of terms and per-
formance characteristics used in assessing air quality should be used in
conjunction with the specific standard test methods prepared by
lSO/TC 146, Air quaky.

---------------------- Page: 3 ----------------------
This page intentionally left blank

---------------------- Page: 4 ----------------------
IS0 6879: 1995(E)
INTERNATIONAL STANDARD 0 IS0
Air quality - Performance characteristics and related
concepts for air quality measuring methods
1 Scope 3 Symbols and abbreviations
This International Standard defines terms and per-
c Air quality characteristic
formance characteristics related to air quality
measuring methods. The values of the performance
C Value of C
characteristics, determined in accordance with an as-
sociated series of test methods, are intended to be
c^ Measured value of C
used to confirm whether a method is appropriate
when assessing air quality in any given situation. This
ith interferent, with i = 1, 2, . . . . n
ci
International Standard does not include specific
Value Of Ci
methods for determining air quality or obtaining rep-
ci
resentative samples or for selecting the number of
Zero sample value of the air quality
cO
measurements necessary for a given task, these be-
characteristic C
ing covered in other International Standards.
Detection limit
CD
The performance characteristics listed also apply to
respective emission measurement procedures.
Quantification limit
%
Analytical function
f
Calibration function
g
2 Normative references
I
First order measure of the value of selec-
The following standards contain provisions which,
tivity related to the ith interferent
through reference in this text, constitute provisions
n Total number of interferents considered
of this International Standard. At the time of publica-
tion, the editions indicated were valid. All standards
r Repeatability limit
are subject to revision, and parties to agreements
based on this International Standard are encouraged
R Reproducibility limit
to investigate the possibility of applying the most re-
cent editions of the standards indicated below.
s Sensitivity
Members of IEC and IS0 maintain registers of cur-
X Output variable
rently valid International Standards.
x
Value of X
IS0 Guide 30:1992, Terms and definitions used in
connection with reference materials.
Mean output signal of a zero sample
x0
IS0 3534-l :I 993, Statistics - Vocabulary and sym-
Decision limit
XD
bols - Part I: Probability and general statistical
terms.
Significance levelsl) (see IS0 3534-l )
at D
I) 5 % by convention.

---------------------- Page: 5 ----------------------
0 IS0
IS0 6879:1995[EI)
The statistical and functional performance character-
4 Rationale
istics given should be sufficient in most cases. For
practical reasons, the list of operational performance
characteristics is limited. In special cases, the user is
The definitions comprise basic concepts and the three
asked to adopt performance characteristics not listed
types of performance characteristics (statistical, func-
in 5.2, but which are suitable for the special method
tional and operational).
or instrument under consideration.
In order to define the performance characteristics, it
is necessary to describe the three terms basic to the
measuring process, i.e. value of air quality character-
5 Basic concepts and perfsrrnance
istic2), output signal (5.1 .I 0) and measured value
characteristics
(5.1.7).
The value of air quality characteristic c is the true
5.1 Basic concepts
value of the air quality characteristic being investi-
gated. The output signal x is the value of the output
5.1.1 air quality characteristic: One of the quanti-
variable of a measuring system obtained as a re-
fiable properties relating to an air mass under investi-
sponse related to the concentration or value of the air
gation, for example, concentration of a constituent.
quality characteristic contained in the air sample being
considered. The output variable may be an output
5.1.2 air sample: Amount of air which is assumed
voltage, a turning angle of an indicator, a scale read-
to be representative of the air mass under investi-
ing, quantity of standard volumetric solution used for
gation, and which is examined for air quality charac-
titration, etc. The measured value c^ is the estimated
teristics.
value of the air quality characteristic, derived from
output signals, and generally involves calculations re-
5.1.3 blank reading: Output signal for a zero sam-
lated to the calibration process and conversion to re-
ple.
quired quantities.
5.1.4 failure of the system: Termination of the
The calibration function (5.2.4) is the relation between
ability of a measuring system to perform its required
output variables and quantifiable properties (concen-
function.
tration, particle size, etc.) of reference materials used
during the calibration process. The analytical function
NOTE 1 Any system is a collection of instruments and
(5.2.2) is the relation between the measured values
components that are electrically and mechanically joined to
and the output variables and is estimated from re-
perform a specific function. System failures can therefore
gression analysis of air quality characteristic values be defined as having occurred when the operating charac-
teristics of a component, or a group of components, change
versus output variables. These relations are not
to the extent that the system can no longer satisfactorily
deterministic but stochastic, usually unstable (see
perform its expected function.
5.2.9) and biased (see 5.2.3).
5.1.5 interferent: Component of the air sample, ex-
Statistical performance characteristics quantify, for
cluding the measured constituent, that effects the
measured values, the possible deviations resulting
output signal.
from the random part of the measuring process; these
are, for example, repeatability or instability.
5.1.6 measured constituent: Component of the air
sample for which a quantity is to be determined by
Functional performance characteristics are estimates
measurement.
of the deterministic part of the measuring process, for
example, sensitivity, calibration function or response
5.1.7 measured value: Estimated value of the air
time.
quality characteristic derived from an output signal;
Operational performance characteristics deal with the this usually involves calculations related to the cali-
influence of the physical and chemical environment bration process and conversion to required quantities.
and maintenance problems, for example, input volt-
age, temperature,
supply of certain substances, 5.1.8 memory effect: Temporary dependence of an
set-up time, warm-up time or period of unattended output signal on one or several previous values of the
operation. air quality characteristics.
2) Defined as measurand in [I] in annex A.

---------------------- Page: 6 ----------------------
0 IS0 IS0 6879:1995(E)
value a nd t he value of the a characteristic it-
5.1.9 method: Procedure for sampling and deter- ir quality
mining one or more air quality characteristics, the ac- self, or the accepted referen ce value.
curacy of which is established using either a reference
material or reference procedures.
5.2.2 analytical function: Inverse of the calibration
function.
NOTE 2 Two or more methods are considered equivalent
if the values for their statistical and functional performance
5.2.3 bias: The difference between the expectation
characteristics, for example bias, precision or sensitivity, fall
of the test results and an accepted reference value.
withi
...

SLOVENSKI STANDARD
SIST ISO 6879:1997
01-avgust-1997
Kakovost zraka - Delovne karakteristike in z njimi povezani koncepti za metode
merjenja kakovosti zraka
Air quality - Performance characteristics and related concepts for air quality measuring
methods
Qualité de l'air - Caractéristiques de fonctionnement et concepts connexes pour les
méthodes de mesurage de la qualité de l'air
Ta slovenski standard je istoveten z: ISO 6879:1995
ICS:
13.040.01 Kakovost zraka na splošno Air quality in general
SIST ISO 6879:1997 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ISO 6879:1997

---------------------- Page: 2 ----------------------

SIST ISO 6879:1997
INTERNATIONAL IS0
STANDARD
6879
Second edition
1995-12-15
Air quality
- Performance characteristics
and related concepts for air quality
measuring methods
Qua/it6 de / ‘air - Caractkristiques de fonctionnement et concepts
connexes pour /es m&hodes de mesurage de la qua/S de / ‘air
Reference number
IS0 6879: 1995(E)

---------------------- Page: 3 ----------------------

SIST ISO 6879:1997
IS0 6879: 1995(E)
Foreword
IS0 (the lnternational Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for
which a technical committee has been established has the right to be
represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 6879 was prepared by Technical Committee
lSO/TC 146, Air quality, Subcommittee SC 4, Genera/ aspects.
This second edition cancels and replaces the first edition
(IS0 6879:1983), which has been technically revised.
Annex A of this International Standard is for information only.
0 IS0 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland

---------------------- Page: 4 ----------------------

SIST ISO 6879:1997
0 IS0 IS0 6879:1995(E)
Introduction
This International Standard which comprises definitions of terms and per-
formance characteristics used in assessing air quality should be used in
conjunction with the specific standard test methods prepared by
lSO/TC 146, Air quaky.

---------------------- Page: 5 ----------------------

SIST ISO 6879:1997
This page intentionally left blank

---------------------- Page: 6 ----------------------

SIST ISO 6879:1997
IS0 6879: 1995(E)
INTERNATIONAL STANDARD 0 IS0
Air quality - Performance characteristics and related
concepts for air quality measuring methods
1 Scope 3 Symbols and abbreviations
This International Standard defines terms and per-
c Air quality characteristic
formance characteristics related to air quality
measuring methods. The values of the performance
C Value of C
characteristics, determined in accordance with an as-
sociated series of test methods, are intended to be
c^ Measured value of C
used to confirm whether a method is appropriate
when assessing air quality in any given situation. This
ith interferent, with i = 1, 2, . . . . n
ci
International Standard does not include specific
Value Of Ci
methods for determining air quality or obtaining rep-
ci
resentative samples or for selecting the number of
Zero sample value of the air quality
cO
measurements necessary for a given task, these be-
characteristic C
ing covered in other International Standards.
Detection limit
CD
The performance characteristics listed also apply to
respective emission measurement procedures.
Quantification limit
%
Analytical function
f
Calibration function
g
2 Normative references
I
First order measure of the value of selec-
The following standards contain provisions which,
tivity related to the ith interferent
through reference in this text, constitute provisions
n Total number of interferents considered
of this International Standard. At the time of publica-
tion, the editions indicated were valid. All standards
r Repeatability limit
are subject to revision, and parties to agreements
based on this International Standard are encouraged
R Reproducibility limit
to investigate the possibility of applying the most re-
cent editions of the standards indicated below.
s Sensitivity
Members of IEC and IS0 maintain registers of cur-
X Output variable
rently valid International Standards.
x
Value of X
IS0 Guide 30:1992, Terms and definitions used in
connection with reference materials.
Mean output signal of a zero sample
x0
IS0 3534-l :I 993, Statistics - Vocabulary and sym-
Decision limit
XD
bols - Part I: Probability and general statistical
terms.
Significance levelsl) (see IS0 3534-l )
at D
I) 5 % by convention.

---------------------- Page: 7 ----------------------

SIST ISO 6879:1997
0 IS0
IS0 6879:1995[EI)
The statistical and functional performance character-
4 Rationale
istics given should be sufficient in most cases. For
practical reasons, the list of operational performance
characteristics is limited. In special cases, the user is
The definitions comprise basic concepts and the three
asked to adopt performance characteristics not listed
types of performance characteristics (statistical, func-
in 5.2, but which are suitable for the special method
tional and operational).
or instrument under consideration.
In order to define the performance characteristics, it
is necessary to describe the three terms basic to the
measuring process, i.e. value of air quality character-
5 Basic concepts and perfsrrnance
istic2), output signal (5.1 .I 0) and measured value
characteristics
(5.1.7).
The value of air quality characteristic c is the true
5.1 Basic concepts
value of the air quality characteristic being investi-
gated. The output signal x is the value of the output
5.1.1 air quality characteristic: One of the quanti-
variable of a measuring system obtained as a re-
fiable properties relating to an air mass under investi-
sponse related to the concentration or value of the air
gation, for example, concentration of a constituent.
quality characteristic contained in the air sample being
considered. The output variable may be an output
5.1.2 air sample: Amount of air which is assumed
voltage, a turning angle of an indicator, a scale read-
to be representative of the air mass under investi-
ing, quantity of standard volumetric solution used for
gation, and which is examined for air quality charac-
titration, etc. The measured value c^ is the estimated
teristics.
value of the air quality characteristic, derived from
output signals, and generally involves calculations re-
5.1.3 blank reading: Output signal for a zero sam-
lated to the calibration process and conversion to re-
ple.
quired quantities.
5.1.4 failure of the system: Termination of the
The calibration function (5.2.4) is the relation between
ability of a measuring system to perform its required
output variables and quantifiable properties (concen-
function.
tration, particle size, etc.) of reference materials used
during the calibration process. The analytical function
NOTE 1 Any system is a collection of instruments and
(5.2.2) is the relation between the measured values
components that are electrically and mechanically joined to
and the output variables and is estimated from re-
perform a specific function. System failures can therefore
gression analysis of air quality characteristic values be defined as having occurred when the operating charac-
teristics of a component, or a group of components, change
versus output variables. These relations are not
to the extent that the system can no longer satisfactorily
deterministic but stochastic, usually unstable (see
perform its expected function.
5.2.9) and biased (see 5.2.3).
5.1.5 interferent: Component of the air sample, ex-
Statistical performance characteristics quantify, for
cluding the measured constituent, that effects the
measured values, the possible deviations resulting
output signal.
from the random part of the measuring process; these
are, for example, repeatability or instability.
5.1.6 measured constituent: Component of the air
sample for which a quantity is to be determined by
Functional performance characteristics are estimates
measurement.
of the deterministic part of the measuring process, for
example, sensitivity, calibration function or response
5.1.7 measured value: Estimated value of the air
time.
quality characteristic derived from an output signal;
Operational performance characteristics deal with the this usually involves calculations related to the cali-
influence of the physical and chemical environment bration process and conversion to required quantities.
and maintenance problems, for example, input volt-
age, temperature,
supply of certain substances, 5.1.8 memory effect: Temporary dependence of an
set-up time, warm-up time or period of unattended output signal on one or several previous values of the
operation. air quality characteristics.
2) Defined as measurand in [I] in annex A.

---------------------- Page: 8 ----------------------

SIST ISO 6879:1997
0 IS0 IS0 6879:1995(E)
value a nd t he value of the a characteristic it-
5.1.9 method: Procedure for
...