{"id":262900,"date":"2024-10-19T17:27:27","date_gmt":"2024-10-19T17:27:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-20-30407324-dc-2020\/"},"modified":"2024-10-25T13:19:17","modified_gmt":"2024-10-25T13:19:17","slug":"bsi-20-30407324-dc-2020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-20-30407324-dc-2020\/","title":{"rendered":"BSI 20\/30407324 DC 2020"},"content":{"rendered":"<p>This document specifies requirements and tests for the construction, performance and safety of class 1,5 Capillary Thermal-Mass Flow sensor gas meters (hereinafter referred to as meter(s)). This applies to meters having co-axial single pipe, or two pipe connections, that are used to measure volumes of fuel gases of the 2nd and\/or 3rd family, as given in <span class=\"std\"><span class=\"std-ref\">EN&nbsp;437:2018<\/span><\/span>.<\/p>\n<p>In general, the term \u201cthermal mass flow meters\u201d applies to a flow-measuring device using heat transfer to measure and indicate gas flowrate, as defined in <span class=\"std\"><span class=\"std-ref\">ISO&nbsp;14511<\/span><\/span>.<\/p>\n<div class=\"non-normative-note\">\n<div class=\"note-label\">\n  NOTE&nbsp;1\n <\/div>\n<p>Although the word \u201cmass\u201d is present in the definition of the measurement principle, gas meters covered by this document provide measurement of gas at base conditions of temperature and pressure.<\/p>\n<\/div>\n<p>These meters have a maximum working pressures not exceeding 0,5 bar and a maximum flowrate not exceeding 160&nbsp;m<sup>3<\/sup>\u22c5h<sup>\u22121<\/sup> over a minimum ambient temperature range of \u221210&nbsp;\u00b0C to +40&nbsp;\u00b0C and a gas temperature range as specified by the manufacturer with a minimum range of 40&nbsp;K.<\/p>\n<p>This document applies to meters indicating volume at base conditions, which are installed in locations with vibration and shocks of low significance. It applies to meters in:<\/p>\n<ul>\n<li>\n<p>closed locations (indoor or outdoor with protection, as specified by the manufacturer) with condensing humidity or with non-condensing humidity;<\/p>\n<\/li>\n<\/ul>\n<p>or, if specified by the manufacturer:<\/p>\n<ul>\n<li>\n<p>open locations (outdoor without any covering) both with condensing humidity or with non-condensing humidity;<\/p>\n<\/li>\n<\/ul>\n<p>and in locations with electromagnetic disturbances likely to be found in residential, commercial and light industrial use.<\/p>\n<p>For meters which indicate unconverted volume reference can be made to <span class=\"xref\">Annex&nbsp;C<\/span>.<\/p>\n<p>Unless otherwise stated, all pressures given in this document are gauge pressures.<\/p>\n<p>Requirements for electronic indexes, valves and additional requirements for batteries incorporated in the meter and any other additional functionalities are given in <span class=\"std\"><span class=\"std-ref\">EN&nbsp;16314:2013<\/span><\/span>.<\/p>\n<p>Unless otherwise stated in a particular test, the tests are carried out on meters that include additional functionality devices intended by the manufacturer.<\/p>\n<p><span class=\"xref\">Clauses&nbsp;1<\/span> to <span class=\"xref\">13<\/span> are for design and type testing only.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>BS EN 17526. Gas meters. Thermal-mass flow-meter based gas meter<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2020<\/td>\n<td>90<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":262903,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1275,2641],"product_tag":[],"class_list":{"0":"post-262900","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-91-140-40","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/262900","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/262903"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=262900"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=262900"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=262900"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}