ISO 9869-3:2023
(Main)Thermal insulation of building elements — In-situ measurement of thermal resistance and thermal transmittance — Part 3: Probe insertion method
Thermal insulation of building elements — In-situ measurement of thermal resistance and thermal transmittance — Part 3: Probe insertion method
This document describes a method for measuring the insulation performance of building elements, e.g. exterior walls, floors, ceilings (hereinafter referred to collectively as "walls"). This is done by using the probe insertion method, which gives the temperature distribution in the wall with a temperature sensor in a small diameter borehole in the wall. The measurement method is divided into a quantitative method, which measures the thermal resistance with a heat flow measurement, and a qualitative method without heat flow measurement. This document describes a screening test that is used for preliminary and practical diagnosis. The method is applicable to plane building components with a light heat capacity, such as those in frame structure dwellings. The measured results give the insulation performance at the local measurement points rather than that of the whole panel including thermal bridges such as studs.
Isolation thermique des éléments de construction — Mesurage in situ de la résistance thermique et du coefficient de transmission thermique — Partie 3: Méthode par insertion d'une sonde
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INTERNATIONAL ISO
STANDARD 9869-3
First edition
2023-11
Thermal insulation of building
elements — In-situ measurement
of thermal resistance and thermal
transmittance —
Part 3:
Probe insertion method
Isolation thermique des éléments de construction — Mesurage in
situ de la résistance thermique et du coefficient de transmission
thermique —
Partie 3: Méthode par insertion d'une sonde
Reference number
ISO 9869-3:2023(E)
© ISO 2023
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ISO 9869-3:2023(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
© ISO 2023 – All rights reserved
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ISO 9869-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units. 2
5 Principle . 2
5.1 General . 2
5.2 Method without heat flow measurement . 2
5.3 Method with heat flow measurement . 2
6 Apparatus . 3
6.1 Temperature measuring devices . 3
6.1.1 Type of sensors and accuracy . 3
6.1.2 Sensor for measuring temperature distribution in walls . 3
6.1.3 Sensors for measuring surface and air temperatures . 4
6.2 Borescope . 4
6.3 Heat flow meter (HFM) . 5
7 Locations of the measured area and sensor installation . 5
8 Measurement conditions and period . 7
8.1 Gen
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9869-3
ISO/TC 163/SC 1
Thermal insulation of building
Secretariat: DIN
elements — In-situ measurement
Voting begins on:
2023-08-07 of thermal resistance and thermal
transmittance —
Voting terminates on:
2023-10-02
Part 3:
Probe insertion method
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9869-3:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 1 ----------------------
ISO/FDIS 9869-3:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9869-3
ISO/TC 163/SC 1
Thermal insulation of building
Secretariat: DIN
elements — In-situ measurement
Voting begins on:
of thermal resistance and thermal
transmittance —
Voting terminates on:
Part 3:
Probe insertion method
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9869-3:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
© ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 2 ----------------------
ISO/FDIS 9869-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units. 2
5 Principle . 2
5.1 General . 2
5.2 Method without heat flow measurement . 2
5.3 Method with heat flow measurement . 2
6 Apparatus . 3
6.1 Temperature measuring devices .
...
2022-12
ISO/DIS FDIS 9869-3:2022(E)
ISO/TC 163/SC 1/WG 16
Secretariat: JISC DIN
Date: 2023-07-24
Thermal insulation of building elements — In-situ measurement
of thermal resistance and thermal transmittance — Part 3: Probe
insertion method
Part 3:
Probe insertion method
FDIS stage
© ISO 2023 – All rights reserved
---------------------- Page: 1 ----------------------
ISO/DIS FDIS 9869-3:20222023(E)
© ISO 2022 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Fax: +41 22 749 09 47
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO2022 © ISO 2023 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS FDIS 9869-3:20222023(E)
© ISO2022 ISO 2023 – All rights reserved iii
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ISO/DIS FDIS 9869-3:20222023(E)
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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Attention is drawnISO draws attention to the possibility that some of the elementsimplementation of this
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www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 163, Thermal performance and energy use
in the built environment, Subcommittee SC 1, Test and measurement methods.
A list of all parts in the ISO 9869 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at
www.iso.org/members.htmlwww.iso.org/members.html.
iv © ISO2022 © ISO 2023 – All rights reserved
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ISO/DIS FDIS 9869-3:20222023(E)
Introduction
The ISO 9869 series describes the in-situ measurement of the thermal transmission properties of plane
building components, primarily consisting of opaque layers perpendicular to the heat flow and having no
significant lateral heat flow. The thermal transmittance of a building element (U-value) is defined in
ISO 7345 as the heat flux per unit area and unit temperature difference in the steady state condition. Since
steady state conditions are never encountered on a site in practice, such a simple measurement is not
possible. Although various statistical methods have been introduced to address thi
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