{"id":389325,"date":"2024-10-20T03:49:27","date_gmt":"2024-10-20T03:49:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-7482021\/"},"modified":"2024-10-26T07:01:06","modified_gmt":"2024-10-26T07:01:06","slug":"bs-en-iso-7482021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-7482021\/","title":{"rendered":"BS EN ISO 748:2021"},"content":{"rendered":"

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword
Endorsement notice <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Principle of the methods of measurements <\/td>\n<\/tr>\n
10<\/td>\n5 Site selection
5.1 Selection of site <\/td>\n<\/tr>\n
11<\/td>\n5.2 Demarcation of site
6 Measurement of cross-sectional area
6.1 General
6.2 Measurement of width
6.3 Measurement of depth <\/td>\n<\/tr>\n
12<\/td>\n7 Measurement of mean velocity
7.1 Determination of mean velocity using point velocity measurements
7.1.1 General
7.1.2 Measurement procedure <\/td>\n<\/tr>\n
13<\/td>\n7.1.3 Oblique flow
7.1.4 Determination of the mean velocity in a vertical <\/td>\n<\/tr>\n
16<\/td>\n7.1.5 Integration method
7.1.6 Errors and limitations
7.2 Determination of mean velocity from surface velocity
7.2.1 General <\/td>\n<\/tr>\n
17<\/td>\n7.2.2 Non-contact systems
7.2.3 Surface one-point method by current meter
7.2.4 Measurement of velocity using floats
7.2.5 Exceptions
7.2.6 Main sources of error <\/td>\n<\/tr>\n
18<\/td>\n8 Computation of discharge
8.1 Arithmetic methods
8.1.1 General
8.1.2 Mean-section method
8.1.3 Mid-section method <\/td>\n<\/tr>\n
19<\/td>\n8.1.4 Bathymetric verticals
8.2 Independent vertical method <\/td>\n<\/tr>\n
21<\/td>\n8.3 Mean-section method \u2014 Horizontal planes
9 Uncertainties in flow measurement
9.1 General <\/td>\n<\/tr>\n
22<\/td>\n9.2 Method of calculating the uncertainty in discharge by measurement of velocity by current meter
9.2.1 General
9.2.2 Contributory uncertainties <\/td>\n<\/tr>\n
24<\/td>\n9.3 Method of calculating the uncertainty in discharge by measurement of velocity using floats
9.3.1 General
9.3.2 Contributory uncertainties <\/td>\n<\/tr>\n
25<\/td>\n9.3.3 Combined uncertainty in discharge <\/td>\n<\/tr>\n
26<\/td>\n9.4 Limitations <\/td>\n<\/tr>\n
27<\/td>\n9.5 Interpolated variance estimator (IVE)
9.6 Q+
9.7 Flaure <\/td>\n<\/tr>\n
28<\/td>\nAnnex A (informative) Use of point velocity current meters <\/td>\n<\/tr>\n
31<\/td>\nAnnex B (informative) Surface velocity measurement using floats <\/td>\n<\/tr>\n
35<\/td>\nAnnex C (informative) Example surface velocity systems <\/td>\n<\/tr>\n
37<\/td>\nAnnex D (informative) Uncertainties in the velocity-area measurement <\/td>\n<\/tr>\n
40<\/td>\nAnnex E (informative) Velocity measurement under ice conditions <\/td>\n<\/tr>\n
46<\/td>\nAnnex F (informative) Corrections for wetted length of wire when measuring depths with wire not normal to surface <\/td>\n<\/tr>\n
49<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Hydrometry. Measurement of liquid flow in open channels. Velocity area methods using point velocity measurements<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n52<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":389334,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[265,2641],"product_tag":[],"class_list":{"0":"post-389325","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-120-20","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\/389325","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\/389334"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=389325"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=389325"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=389325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}