IEC TS 63165:2024

IEC TS 63165 ®
Edition 1.0 2024-12
TECHNICAL
SPECIFICATION
Requirements for industrial water quality analyzer system – Photometry

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IEC TS 63165 ®
Edition 1.0 2024-12
TECHNICAL
SPECIFICATION
Requirements for industrial water quality analyzer system – Photometry

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.060.25  ISBN 978-2-8327-0089-1

– 2 – IEC TS 63165:2024 © IEC 2024
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Procedure for specification . 10
4.1 Procedure for specification. 10
4.2 General . 10
4.2.1 Rated operating conditions . 10
4.2.2 Storage and transportation conditions . 10
4.2.3 Safety of people, environment and equipment . 10
4.2.4 Construction materials . 10
4.3 Performance characteristics requiring statements of rated values . 10
4.4 Performance characteristics . 11
4.5 Functional characteristics requiring statements . 11
4.5.1 Measured component . 11
4.5.2 Analysis principle . 11
4.5.3 Detection wavelength . 11
4.5.4 Automatic calibration . 11
4.5.5 Sample conditions . 11
4.5.6 Explosion-proof . 11
4.5.7 Ingress protection . 11
5 Functional requirements of analyzer system . 12
5.1 Internal and external interface. 12
5.1.1 Electrical interface . 12
5.1.2 Liquid interface . 12
5.2 Automatic verification . 12
5.3 Access and control protocol . 12
5.3.1 General . 12
5.3.2 Data record . 13
5.3.3 Status and information query . 13
5.3.4 Parameter setting . 14
5.3.5 Remote control . 14
5.3.6 Network security management . 14
5.3.7 Analyzer system self-recovery . 15
5.3.8 Fault diagnosis information output . 15
5.4 Additional information . 15
6 Verification of values . 15
6.1 Test preparation. 15
6.1.1 General . 15
6.1.2 Operational conditions . 15
6.1.3 Calibration . 16
6.2 Testing procedures . 16
6.2.1 Precision . 16
6.2.2 Accuracy . 16
6.2.3 Zero drift. 16
6.2.4 Span drift . 17

6.2.5 Bias . 18
6.2.6 Linearity . 18
6.2.7 Standard verification . 18
6.2.8 Retest of the retained sample . 18
6.2.9 Interference of colour and suspended particles . 19
6.2.10 Interference of ion . 19
6.2.11 Interference of pH . 19
6.2.12 Limit of quantitation . 19
6.2.13 Memory effect . 19
6.2.14 Rate of valid data . 20
6.2.15 Consistency of parallel measurements . 20
6.2.16 Interference of ambient temperature . 21
6.2.17 Interference of supply voltage . 21
6.3 Additional information . 21
Annex A (informative) Automatic and manual verification during work . 22
A.1 Verification plan . 22
A.2 Assurance operations and data audit . 22
Annex B (informative) Operation and maintenance. 24
B.1 Operation and maintenance plan . 24
B.2 Remote maintenance . 24
B.2.1 Remote diagnosis . 24
B.2.2 Remote verification . 24
B.3 Routine inspection . 24
B.3.1 State and parameters . 24
B.3.2 Consumables . 25
B.3.3 Reagent . 25
B.4 Regular preventive maintenance . 25
Bibliography . 26

Table 1 – Performance characteristics . 11
Table 2 – Liquid interfaces . 12
Table 3 – Definition of measurement data content . 13
Table 4 – Labels of the measurement data . 13
Table 5 – Status and information query content . 13
Table 6 – Parameter setting . 14
Table 7 – Remote control content . 14
Table 8 – Security functions . 15
Table A.1 – Verification plan . 22
Table B.1 – Overall plan list of the operation and maintenance . 24

– 4 – IEC TS 63165:2024 © IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REQUIREMENTS FOR INDUSTRIAL WATER
QUALITY ANALYZER SYSTEM – PHOTOMETRY

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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the latest information, which may be obtained from the patent database available at https://patents.iec.ch . IEC
shall not be held responsible for identifying any or all such patent rights.
IEC TS 63165 has been prepared by subcommittee 65B: Measurement and control devices, of
IEC technical committee 65: Industrial-process measurement, control and automation. It is a
Technical Specification.
The text of this Technical Specification is based on the following documents:
Draft Report on voting
65B/1253/DTS 65B/1274/RVDTS
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Specification: is English.

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC TS 63165:2024 © IEC 2024
REQUIREMENTS FOR INDUSTRIAL WATER
QUALITY ANALYZER SYSTEM – PHOTOMETRY

1 Scope
This document applies to the industrial water quality analyzer system that uses a photometric
method to determine the concentration of one or more chemical components in industrial water
(water used in manufacturing, processing, cooling, washing, boiler, etc).
The objective of this document is to:
– specify the terminology and definitions related to the performance characteristics of a
photometric industrial water quality analyzer system;
– unify the performance expression and verifying methods of such an analyzer system;
– specify the test procedures to be used in making statements on the performance
characteristics of a photometric industrial water quality analyzer system.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62443-3-3, Industrial communication networks – Network and system security – Part 3-3:
System security requirements and security levels
IEC 62443-4-2, Security for industrial automation and control systems – Part 4-2: Technical
security requirements for IACS components
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
photometry
determination of the concentration of a dissolved substance in a solution by using the absorption
of light by this substance
[SOURCE: ISO 14532:2014, 2.4.12]
3.2
measurand
particular quantity subject to measurement
[SOURCE: IEC 60050-311:2001, 311-01-03]

3.3
measuring range
range defined by two values of the measurand, or quantity to be supplied, within which the limits
of uncertainty of the measuring instrument are specified
Note 1 to entry: An instrument can have several measuring ranges.
[SOURCE: IEC 60050-311:2001, 311-03-12]
3.4
90 %response time
T
time interval from the instant a step change occurs in the value of the property being measured
to the instant when the change in the indicated value passes (and remains beyond) 90 % of its
steady-state amplitude difference, i.e., T = T + T (or T ). For cases where the rising and
90 10 r f
falling response times differ, the different response times should be specified
[SOURCE: IEC 60746-1:2003, 3.38]
3.5
calibration
set of operations which establishes, by reference to standards, the relationship which exists,
under specified conditions, between an indication and a result of a measurement
Note 1 to entry: This term is based on the "uncertainty" approach.
Note 2 to entry: The relationship between the indications and the results of measurement can be expressed, in
principle, by a calibration diagram.
[SOURCE: IEC 60050-311:2001, 311-01-09]
3.6
calibration interval
period between routine calibrations over which the performance of the analyser meets specified
requirements
[SOURCE: ISO 14532:2014, 2.5.1.6]
3.7
blank calibration solution
solution prepared in the same way as the calibration solution but leaving out the analyte
[SOURCE: ISO 17294-1:2004, 3.3]
3.8
calibration solution
solution of known value of the property being measured, used for periodic calibration and for
various performance tests
Note 1 to entry: The value should be expressed in SI units compatible with ISO 31.
Note 2 to entry: For the purposes of this document, the value of this solution represents the conventional true value
against which the indicated value is compared.
Note 3 to entry: The values of calibration solutions should be traceable to reference material according to
international or national standards, or agreed upon by the manufacturer and the user, and the conventional true
values shall be stated.
[SOURCE: IEC 60746-1:2003, 3.5]

– 8 – IEC TS 63165:2024 © IEC 2024
3.9
accuracy
quality which characterizes the ability of a measuring instrument to provide an indicated value
close to a true value of the measurand
Note 1 to entry: This term is used in the "true value" approach.
Note 2 to entry: Accuracy is all the better when the indicated value is closer to the corresponding true value.
[SOURCE: IEC 60050-311:2001, 311-06-08]
3.10
precision
measurement precision
closeness of agreement between independent test/measurement results obtained under
stipulated conditions
Note 1 to entry: Precision can be expressed as a standard deviation or relative standard deviation (coefficient of
variation).
[SOURCE: ISO 18158:2016, 2.4.3.3]
3.11
span drift
change in analyzer system output in response to a standard of 90 % of the measuring range(s)
of the analyzer system over a stated period of unattended operation
[SOURCE: ISO 11042-2:1996, 3.5.4, modified – in the term “span instability (drift)” has been
replaced by “span drift”, and in the definition, “instrument” has been replaced with “analyzer
system”.]
3.12
zero drift
change in analyzer system output in response to a zero sample over a stated period of
unattended operation
3.13
memory effect
effect of previous values of the measurand on the current measurement results
Note 1 to entry: This effect mainly occurs in the residue of solutions or water samples.
[SOURCE: ISO 9169:2006, 2.1.21, modified – the note has been added.]
3.14
limit of detection
measured quantity value, obtained by a given measurement procedure, for which the probability
of falsely claiming the absence of a component in a material is β, given a probability α of falsely
claiming its presence
Note 1 to entry: IUPAC recommends default values for α and β equal to 0.05.
Note 2 to entry: The abbreviation LOD is sometimes used.
Note 3 to entry: The term “sensitivity” is discouraged for ‘detection limit’.
Note 4 to entry: The LOD is the lowest concentration of measurand in a sample that can be detected, but not
necessarily quantitated under the stated conditions of the test.
[SOURCE:ISO 6107:2021, 3.169, modified – “detection level” has been removed from the term.]

3.15
limit of quantification
lowest concentration of a measurand that can be determined with acceptable precision under
the stated conditions of the test
Note 1 to entry: As such defined, LOQ is based on evaluation of precision. This does not encompass neither any
eventual bias, nor laboratory measurement uncertainty at LOQ level`.
[SOURCE: ISO 6107:2021, 3.320]
3.16
parallel measurements
measurements by different analyzer systems with sampling the same industrial water over the
same time period
[SOURCE: ISO 9169:2006, 2.1.22, modified – in the definition, “measuring” has been replaced
with “analyzer”.]
3.17
consistency of parallel measurements
evaluation of the maximum difference among different analyzer systems by parallel
measurements
3.18
bias
difference between the expectation of a measurement result and a test result by laboratory
methods
3.19
period of unattended operation
maximum interval of time for which the performance characteristics remains within a predefined
range without external servicing, e.g. refill, adjustment
[SOURCE: ISO 9169:2006, 2.2.11]
3.20
rate of valid data
ratio of valid data to total data during the period of unattended operation
3.21
interference of ambient temperature
relative deviation between the measured value and the reference value of the standard solution
under different ambient temperature
3.22
interference of supply voltage
deviation between the measured value and the reference value of the standard solution under
different supply voltage
3.23
interference of colour and suspended particles
accuracy of a measured value after adding a standard solution with a specific colour and
suspended particles in comparison with the reference value
3.24
ion interference
accuracy of a measured value after adding a standard solution with a specific interfering ion in
comparison with the reference value

– 10 – IEC TS 63165:2024 © IEC 2024
3.25
pH interference
accuracy of a measured value of a standard solution at different pH level in comparison with
the reference value
4 Procedure for specification
4.1 Procedure for specification
For an industrial water quality analyzer system, manufacturers should provide all the applicable
characteristic parameters with tolerances.
These characteristics should include performance characteristics, functional characteristics,
ambient conditions, safety instructions, etc., which should be listed in the illustrative materials
such as the product/user manual, or product nameplate.
These statements shall cover the aspects described in 4.2 to 4.5.
4.2 General
4.2.1 Rated operating conditions
Statements shall be made on rated operating conditions and limit conditions of operation in
such a way that the following requirements are met, unless otherwise specified.
The apparatus, while functioning, shall show no damage or degradation of performance when
performance characteristics or influence quantities, or both, are within the operation condition
range during a specified time.
4.2.2 Storage and transportation conditions
The ambient conditions such as temperature, humidity, and the exposure to sunshine during
storage shall be clearly identified by the manufacturer.
The condition requirements such as vibration, sunshine, and tipping/tilt during transportation
shall be identified by the manufacturer.
The apparatus shall show no permanent damage or degradation of performance while
inoperative when it has been stored or transported within required conditions during a specified
time.
4.2.3 Safety of people, environment and equipment
Explanation and warning of safety related situations, such as high temperature, toxic solutions,
special light, radiation, etc., shall be clearly specified.
4.2.4 Construction materials
Construction materials in contact with the sample shall be stated and verified to not contaminate
the sample.
4.3 Performance characteristics requiring statements of rated values
4.3.1 The manufacturer shall state minimum and maximum rated values for property to be
measured (range or ranges).
4.3.2 Minimum and maxi
...