{"id":293788,"date":"2024-10-19T19:57:58","date_gmt":"2024-10-19T19:57:58","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-64162017\/"},"modified":"2024-10-25T17:09:54","modified_gmt":"2024-10-25T17:09:54","slug":"bs-en-iso-64162017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-64162017\/","title":{"rendered":"BS EN ISO 6416:2017"},"content":{"rendered":"

This document describes the establishment and operation of an ultrasonic (transit-time) gauging station for the continuous measurement of discharge in a river, an open channel or a closed conduit. It also describes the basic principles on which the method is based, the operation and performance of associated instrumentation and procedures for commissioning.<\/p>\n

It is limited to the \u201ctransit time of ultrasonic pulses\u201d technique, and is not applicable to systems that make use of the \u201cDoppler shift\u201d or \u201ccorrelation\u201d or \u201clevel-to-flow\u201d techniques.<\/p>\n

This document is not applicable to measurement in rivers with ice.<\/p>\n

\n

NOTE This document focuses on open channel flow measurement. IEC 60041 covers the use of the technique for full pipe flow measurement.<\/p>\n<\/blockquote>\n

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\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
8<\/td>\n1 Scope
2 Normative references
3 Terms and definitions
4 Applications
4.1 Types of applications <\/td>\n<\/tr>\n
9<\/td>\n4.2 Attributes and limitations
5 Method of measurement
5.1 Discharge <\/td>\n<\/tr>\n
10<\/td>\n5.2 Calculation of discharge from the transit-time measurement
6 Flow velocity determination by the ultrasonic (transit time) method
6.1 Principle <\/td>\n<\/tr>\n
12<\/td>\n6.2 Sound propagation in water
6.2.1 General <\/td>\n<\/tr>\n
13<\/td>\n6.2.2 Speed of sound in water
6.2.3 Propagation losses <\/td>\n<\/tr>\n
15<\/td>\n6.2.4 Signal path bending <\/td>\n<\/tr>\n
16<\/td>\n6.2.5 Reflection <\/td>\n<\/tr>\n
17<\/td>\n7 Gauge configuration
7.1 General
7.2 Single-path systems <\/td>\n<\/tr>\n
18<\/td>\n7.3 Multi-path systems
7.4 Crossed-path systems <\/td>\n<\/tr>\n
20<\/td>\n7.5 Reflected-path systems <\/td>\n<\/tr>\n
21<\/td>\n7.6 Systems using transponders <\/td>\n<\/tr>\n
22<\/td>\n7.7 Wireless systems (if a cable crossing is not possible) <\/td>\n<\/tr>\n
23<\/td>\n7.8 Systems using divided cross-sections
7.9 Sloping paths <\/td>\n<\/tr>\n
24<\/td>\n8 Determination of discharge
8.1 Single-path systems <\/td>\n<\/tr>\n
25<\/td>\n8.2 Multi-path systems
8.2.1 General <\/td>\n<\/tr>\n
26<\/td>\n8.2.2 Mid-section method <\/td>\n<\/tr>\n
27<\/td>\n8.2.3 Mean-section method <\/td>\n<\/tr>\n
28<\/td>\n8.3 Systems with transducers in the channel <\/td>\n<\/tr>\n
29<\/td>\n9 System verification and calibration <\/td>\n<\/tr>\n
30<\/td>\n10 Site selection
11 Site survey \u2014 Before design and construction
11.1 General
11.2 Visual survey <\/td>\n<\/tr>\n
31<\/td>\n11.3 Survey of the cross-section
11.4 Survey of velocity distribution
11.5 Survey of signal propagation
12 Operational measurement requirements
12.1 General <\/td>\n<\/tr>\n
32<\/td>\n12.2 Basic components of flow determination
12.3 Water velocity determination
12.4 Determination of water stage or depth <\/td>\n<\/tr>\n
33<\/td>\n12.5 Determination of mean bed level <\/td>\n<\/tr>\n
34<\/td>\n12.6 Channel width
13 Gauging station equipment
13.1 General <\/td>\n<\/tr>\n
35<\/td>\n13.2 Design and construction of equipment
13.2.1 Transducers <\/td>\n<\/tr>\n
36<\/td>\n13.2.2 Transducer cables
13.3 Reflectors <\/td>\n<\/tr>\n
39<\/td>\n13.4 Civil engineering works
13.5 Signal timing and processing
13.5.1 General
13.5.2 Signal-to-noise ratio <\/td>\n<\/tr>\n
40<\/td>\n13.5.3 Signal maintenance (gain control)
13.5.4 Signal detection <\/td>\n<\/tr>\n
41<\/td>\n13.5.5 Post-detection filtering
13.6 System self-checking <\/td>\n<\/tr>\n
42<\/td>\n13.7 Site-specific data (or site parameters)
13.8 Clock and calendar
13.9 System performance criteria
13.9.1 General <\/td>\n<\/tr>\n
43<\/td>\n13.9.2 Operating environment
13.9.3 Water environment
13.9.4 Mechanical environment
13.9.5 Extreme environmental conditions
13.9.6 Power source
13.9.7 Measurement uncertainty <\/td>\n<\/tr>\n
44<\/td>\n13.10 System output
13.10.1 Local display
13.10.2 Local record
13.10.3 Remote record
13.10.4 Diagnostic information
13.11 Installation <\/td>\n<\/tr>\n
45<\/td>\n13.12 Commissioning
13.13 Operating manual <\/td>\n<\/tr>\n
46<\/td>\n13.14 Maintenance <\/td>\n<\/tr>\n
47<\/td>\n14 Measurement uncertainties
14.1 General
14.2 Definition of uncertainty <\/td>\n<\/tr>\n
48<\/td>\n14.3 Uncertainty in discharge
14.3.1 Uncertainty equation <\/td>\n<\/tr>\n
49<\/td>\n14.3.2 Effective number of paths
14.3.3 Uncertainty in the line velocity, Ulv
14.3.4 Uncertainty in the channel width estimation, Uw <\/td>\n<\/tr>\n
50<\/td>\n14.3.5 Examples of uncertainty estimation <\/td>\n<\/tr>\n
51<\/td>\n14.3.6 Uncertainty estimate at low flow <\/td>\n<\/tr>\n
52<\/td>\n14.3.7 Uncertainty estimate at high flow <\/td>\n<\/tr>\n
54<\/td>\nAnnex A (informative) Principle of measurement uncertainty <\/td>\n<\/tr>\n
61<\/td>\nAnnex B (informative) Performance guide for hydrometric equipment for use in technical standard examples <\/td>\n<\/tr>\n
65<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Hydrometry. Measurement of discharge by the ultrasonic transit time (time of flight) method<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n66<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":293794,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[265,2641],"product_tag":[],"class_list":{"0":"post-293788","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\/293788","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\/293794"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=293788"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=293788"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=293788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}