ISO 15971 : 2008(R2013)现行
NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX
出版：International Organization for Standardization
专家解读视频
Specifies the measurement of calorific value of natural gas and natural gas substitutes by non-separative methods, i.e. methods that do not involve the determination of the gas composition, nor calculations from it.
NF EN ISO 15971 : 2014 - Identical
PN EN ISO 15971 : 2014 - Identical
NBN EN ISO 15971 : 2014 - Identical
NS EN ISO 15971 : 2014 - Identical
PN ISO 15971 : 2013 - Identical
BS EN ISO 15971 : 2014 - Identical
DIN EN ISO 15971 : 2014 - Identical
DIN EN ISO 15971 E : 2014 - Identical
UNI EN ISO 15971 : 2014 - Identical
NEN ISO 15971 : 2008 - Identical
DS EN ISO 15971 : 2014 - Identical
I.S. EN ISO 15971:2014 - Identical
UNE EN ISO 15971 : 2014 - Identical
SN EN ISO 15971 : 2014 - Identical
NEN EN ISO 15971 : 2014 - Identical
