BS ISO 7504:2015 pdf free.Gas analysis一Vocabulary.
BS ISO 7504 defines terms related to gas analysis, with the main locus on terms related to calibration gas mixtures for use in gas analysis and gas measurements. It does not cover terms which relate only to specific applications.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC Guide 98-3:2008, Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)
lSO/IEC Guide 99:2007, International vocabulary of metrology — Basic and general concepts and associated terms (ViM)
ISO 10715:1997, Natural gas — Sampling guidelines
3 Terms relating to general concepts
Terms used in the field of gas analysis that are well defined by either ISO/IEC Guide 98-3 or ISO/IEC Guide 99 are included in Annex A.
3.1 homogeneity state of a gas mixture wherein all of its components (13) are distributed uniformly throughout the volume occupied by the gas mixture
3.2 stability attribute of a gas mixture, under specified conditions, to maintain its composition (1) within specified uncertainty (Annex A) limits for a specified period of time (maximum storage l[e (2))
3.3 component chemical entity at a defined physical state present in a material or in a mixture
3.4content amount-of-substance fraction (15J..i), mass fraction (1&L2), volume fraction (3.&L3), amount-of- substance concentration (3.5.2.].), mass concentration (3..j2,2), volume concentration (3.5.2.3) of a component (13) in a gas or gas mixture.
3.5 composition identity and content (3.4) of each component (3.3) that constitute a particular gas mixture
3.5.1 Fractions
3.5.1.1 amount-of-substance fraction mole fraction XB,JYB quotient of the amount of substance of a component B and the sum of the amounts of substance of all components (3.3) of the gas mixture [SOURCE: IS0 80000-9:2009, 9-14]
3.5.1.2 mass fraction wB quotient of the mass of a component B and the sum of the masses of all components (3.3) of the gas mixture [SOURCE: ISO 80000-9:2009, 9-12]
3.5.1.3 volume fraction φB quotient of the volume of a component B and the sum of the volumes of all components (3.3) of the gas mixture before mixing, all volumes referring to the pressure and the temperature of the gas mixture [SOURCE: ISO 80000-9:2009, 9-15].BS ISO 7504 pdf free download.
Tags: Gas analysis
-
ISO 8600-1-2013 pdf free download.Endoscopes – Medical endoscopes and endotherapy devices – Part 1: General requirements. 6 Marking 6.1 Minimum marking Iach individual endoscope or endotherapy device shall have the lollowing minimum marking: a) model number and/or other mark sufficient to identify the endoscope or endotherapy device and its manufacturer; b) maximum insertion portion width, minimum instrument channel width, working length, field of view and/or direction of view where such identification is necessary for the intended use of the endoscope or endotherapy device. The Insertion portion width and instrument channel width units shall be in millimetres. The insertion portion width and instrument channel width can also be marked in French size as defined in 3.5, shown by either ‘Fr or an encircled number; c) wherever reasonable and practicable. the endoscope or endotherapy device and detachable component(s) shall be identified in terms of lot numbers or serial numbers, etc. 6.2 Marking legibility The marking shall remain legible over the lifetime of the device when the endoscope or endotherapy device is used, cleaned, disinlected, sterilized and stored in accordance with the instruction manual. 6.3 Marking exceptions When marking on the endoscope or endotherapy device or detachable component(s) is impossible to achieve due…
-
ISO 15688-2012 pdf free download.Road construction and maintenance equipment – Soil stabilizers 一 Terminology and commercial specifications. This International Standard establishes the terminology, definitions of operation and commercial specifications for soil stabilizers and their components intended for use in road construction and pavement works. It does not apply to soil stabilizers used in agricultural applications. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.. ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking ISO 6746-1, Earth-moving machinery — Definitions of dimensions and codes — Part 1: Base machine ISO 6746-2, Earth-moving machinery — Definitions of dimensions and codes — Part 2: Equipment and attachments ISO 7134. Earth-moving machinery — Graders — Terminology and commercial specifications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 soil stabilizer self-propelled machine, either towed or transported, with the function of pulverizing, breaking-up, aerating, homogenizing, and loosening existing and imported soil or paving materials and mixing them…
-
ISO 18436-1-2012 pdf free.Condition monitoring and diagnostics of machines – Requirements for qualification and assessment of personnel一 Part 1: Requirements for assessment bodies and the assessment process. 5 Requirements for assessment body personnel 5.1 General provisions In order to ensure that the assessment process is carried out effectively and uniformly, the competence requirements for personnel involved in the entire process shall be defined by the assessment body and, in the case of a third party, be approved by the responsible TCC (in accordance with ISO/IEC 17024). The assessment body shall require its personnel (internal or external) to sign a contract, or other document, by which they commit themselves to comply with the rules defined by the assessment body, including those relating to confidentiality and those relating to independence from commercial and other interests, and from any prior or present link with the persons to be examined that would, in the opinion of the interested parties, compromise impartiality. Clearly documented instructions shall be available to the personnel, describing their duties and responsibilities. These instructions shall be maintained up to date. All personnel involved in any aspect of assessment activities shall possess appropriate educational qualifications, experience and technical expertise, which satisfy defined…