{"id":293191,"date":"2024-10-19T19:55:09","date_gmt":"2024-10-19T19:55:09","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-84522005\/"},"modified":"2024-10-25T17:05:12","modified_gmt":"2024-10-25T17:05:12","slug":"bs-84522005","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-84522005\/","title":{"rendered":"BS 8452:2005"},"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\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
1<\/td>\nBRITISH STANDARD <\/td>\n<\/tr>\n
2<\/td>\nCommittees responsible for this British\ufffdStandard <\/td>\n<\/tr>\n
3<\/td>\nContents <\/td>\n<\/tr>\n
5<\/td>\nIntroduction
1 Scope
2 Symbols and abbreviations <\/td>\n<\/tr>\n
6<\/td>\n3 Clamp-on transit time ultrasonic flow-meters
3.1 General
3.2 The principle of operation <\/td>\n<\/tr>\n
7<\/td>\nFigure 1 \u2014 A typical clamp-on TTUF
Figure 2 \u2014 Schematic of a clamp-on TTUF <\/td>\n<\/tr>\n
9<\/td>\n3.3 Application areas
Table 1 \u2014 Application areas of clamp-on TTUFs <\/td>\n<\/tr>\n
10<\/td>\n3.4 Performance measures <\/td>\n<\/tr>\n
11<\/td>\n3.5 Uncertainty, repeatability and reproducibility under ideal flow, pipe fluid and operational\ufffdc… <\/td>\n<\/tr>\n
12<\/td>\n4 Installation effects
4.1 General
Figure 3 \u2014 Profile correction factor (kh) against Reynolds number for fully developed flow in smooth pipes <\/td>\n<\/tr>\n
13<\/td>\n4.2 Preferred installation conditions
Table 2 \u2014 Installation effect upstream straight length table
4.3 Reducing the effects of disturbed flows
Figure 4 \u2014 Two-path measurement <\/td>\n<\/tr>\n
14<\/td>\n5 Pipework effects
5.1 Typical ranges of pipe size, pipe material, lining material and wall thickness to which the\ufffdt…
Table 3 \u2014 Ranges of pipe size, material, wall thickness and lining material with which clamp\ufffdon\ufffdTTUFs can b… <\/td>\n<\/tr>\n
15<\/td>\n5.2 Effects of pipe wall roughness on measurement performance
Figure 5 \u2014 Effect of pipe wall roughness on profile correction factor <\/td>\n<\/tr>\n
16<\/td>\n5.3 Ultrasonic properties of pipework
6 Fluid effects
6.1 Effects of fluid density and viscosity on meter performance
6.2 Effects of speed of sound on meter performance
6.3 Effects of gas bubbles and solids on meter performance <\/td>\n<\/tr>\n
17<\/td>\n6.4 Limitations caused by highly attenuative liquid media
7 Operational effects
7.1 User training
7.2 Transducer configurations
7.3 Location of the transducers with respect to the pipe
7.4 Positioning of the transducers <\/td>\n<\/tr>\n
18<\/td>\nFigure 6 \u2014 Transducer configurations
7.5 Method of clamping <\/td>\n<\/tr>\n
19<\/td>\n7.6 Getting the most information from the installation
7.7 Couplant and pipe preparation
7.8 Process temperature <\/td>\n<\/tr>\n
20<\/td>\n7.9 Pipe size and transducer frequency
7.10 Pipe diameter and wall thickness measurement <\/td>\n<\/tr>\n
21<\/td>\n8 Manufacturer specific
8.1 Measurement of time difference
Figure 7 \u2014 Leading edge measurement <\/td>\n<\/tr>\n
22<\/td>\nFigure 8 \u2014 Phase measurement system <\/td>\n<\/tr>\n
23<\/td>\n8.2 Correction for Reynolds number
8.3 Correction for speed of sound
8.4 Diagnostics <\/td>\n<\/tr>\n
24<\/td>\nAnnex A (normative)
Reference data
Table A.1 \u2014 Reference clamp-on calibrations <\/td>\n<\/tr>\n
25<\/td>\nTable A.2 \u2014 Disturbance calibrations <\/td>\n<\/tr>\n
26<\/td>\nTable A.3 \u2014 Solid sound speeds <\/td>\n<\/tr>\n
27<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
28<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
29<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
30<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
31<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
32<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
33<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
34<\/td>\nTable A.4 \u2014 Fluid sound speeds <\/td>\n<\/tr>\n
35<\/td>\nAnnex B (normative)
Clamp-on Doppler ultrasonic flow-meter <\/td>\n<\/tr>\n
36<\/td>\nFigure B.1 \u2014 Basics of Doppler ultrasonic flow-meter <\/td>\n<\/tr>\n
37<\/td>\nAnnex C (normative)
Cross-correlation ultrasonic flow-meters <\/td>\n<\/tr>\n
38<\/td>\nFigure C.1 \u2014 Cross-correlation ultrasonic flow-meter <\/td>\n<\/tr>\n
39<\/td>\nAnnex D (informative)
(informative) Installation effect
Figure D.1 \u2014 Errors downstream of a conical contraction
Figure D.2 \u2014 Errors downstream of a conical expansion <\/td>\n<\/tr>\n
40<\/td>\nFigure D.3 \u2014 Errors downstream of a single 90\u00b0 bend
Figure D.4 \u2014 Errors downstream of two 90\u00b0 bends in \u201cU\u201d\ufffdconfiguration <\/td>\n<\/tr>\n
41<\/td>\nFigure D.5 \u2014 Errors from two 90\u00b0 bend in perpendicular planes
Figure D.6 \u2014 Errors downstream of a butterfly valve <\/td>\n<\/tr>\n
42<\/td>\nFigure D.7 \u2014 Errors downstream of a globe valve
Figure D.8 \u2014 Errors downstream of a gate valve <\/td>\n<\/tr>\n
43<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Use of clamp-on (externally mounted) transit time metering techniques for liquid applications. Guide<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2005<\/td>\n46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":293196,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[264,2641],"product_tag":[],"class_list":{"0":"post-293191","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-17-120-10","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\/293191","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\/293196"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=293191"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=293191"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=293191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}