Customer Support: +44 (0)203 327 3140

Login to i2i Subscription Intertek.com
  • There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Go to AMERICAS site
Dismiss alert
Please enter a keyword to search
Advanced search

BS EN 12939:2001

Current
Current

The latest, up-to-date edition.

Thermal performance of building materials and products. Determination of thermal resistance by means of guarded hot plate and heat flow meter methods. Thick products of high and medium thermal resistance
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

20-12-2002

Publisher

British Standards Institution

Foreword
Introduction
1 Scope
2 Normative references
3 Definitions, symbols and units
4 Instrumentation
5 Procedures
6 Calculations and test report
Annex A (normative) Instrumentation
Annex B (normative) Conversion utilities
        for thick specimens
Annex C (informative) Advanced procedures
        to test thick specimens exceeding thickness
        capabilities of the apparatus
Annex D (informative) Items which are
        expected to be specified in product standards

This standard particularly addresses towards specific problems related with testing according to European product standards, thick high and medium thermal resistance specimens with heat flow meter or guarded hot plate. The guarded hot plate and heat flow meter apparatus can be operated up to thickness of 100 mm to 150 mm and the accuracy has to be kept within 2%.

This standard gives the procedures to determine the thermal resistance of products the thicknesses of which exceed the maximum thickness for guarded hot plate or heat flow meter apparatus. In any case most of the procedures described in this standard require apparatus that allows tests on specimens up to 100 mm thick. This standard gives guidelines to assess the relevance of the thickness effect, i.e. to establish whether the thermal resistance of a thick product can or cannot be calculated as the sum of the thermal resistances of slices cut from the product, these guidelines complement the indications given in ISO 8302:1991 on the guarded hot plate apparatus.This standard describes testing conditions which prevent the onset of convection. which could take place in some products under the considered temperature differences and thicknesses.

Committee
B/540
DevelopmentNote
Together with BS EN 12667 and BS EN 12664 Supersedes BS 874-2.1(1986) and BS 874-2.1(1988). (03/2001) Supersedes 97/711642 DC (01/2003)
DocumentType
Standard
Pages
36
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
NBN EN 12939 : 2001 Identical
EN 12939:2000 Identical
NS EN 12939 : 1ED 2000 Identical
SN EN 12939 : 2001 Identical
UNE-EN 12939:2001 Identical
NF EN 12939 : 2001 Identical
UNI EN 12939 : 2002 Identical
DIN EN 12939:2001-02 Identical
NEN EN 12939 : 2000 Identical
I.S. EN 12939:2000 Identical

12/30147224 DC : 0 BS 5970 - THERMAL INSULATION OF PIPEWORK, DUCTWORK, ASSOCIATED EQUIPMENT AND OTHER INDUSTRIAL INSTALLATIONS IN THE TEMPERATURE RANGE OF -100 DEGREES C TO +870 DEGREES C - CODE OF PRACTICE
BS 5970:2012 Thermal insulation of pipework, ductwork, associated equipment and other industrial installations in the temperature range of -100°C to +870°C. Code of practice

EN 12667:2001 Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance
EN 1946-3:1999 Thermal performance of building products and components - Specific criteria for the assessment of laboratories measuring heat transfer properties - Part 3: Measurements by heat flow meter method
EN 1946-2:1999 Thermal performance of building products and components - Specific criteria for the assessment of laboratories measuring heat transfer properties - Part 2: Measurements by guarded hot plate method
ISO 8302:1991 Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus
EN ISO 9288:1996 Thermal insulation - Heat transfer by radiation - Physical quantities and definitions (ISO 9288:1989)
ISO 8301:1991 Thermal insulation Determination of steady-state thermal resistance and related properties Heat flow meter apparatus
ISO 9288:1989 Thermal insulation — Heat transfer by radiation — Physical quantities and definitions
ISO 7345:1987 Thermal insulation Physical quantities and definitions

View more information
£232.00
Excluding VAT
GBP
CAD
CHF
CNY
DKK
EUR
GBP
HKD
IDR
INR
JPY
KRW
MXN
NOK
NZD
SEK
SGD
USD
ZAR
Hardcopy - English
PDF - English
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

or

Get in touch with us