BS EN ISO 748:2007
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Hydrometry. Measurement of liquid flow in open channels using current-meters or floats
Hardcopy , PDF
English
30-11-2007
31-12-2021
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of the methods of measurements
5 Selection and demarcation of site
6 Measurement of cross-sectional area
7 Measurement of velocity
8 Computation of discharge
9 Uncertainties in flow measurement
Annex A (informative) - Correction for sag, pull,
slope and temperature in measurement of
cross-section width by tape or wire
Annex B (informative) - Distance measurement
across the cross-section
Annex C (informative) - Corrections for wetted
length of wire when measuring depths with
wire not normal to surface
Annex D (informative) - Correction for drift
Annex E (informative) - Uncertainties in the velocity-area
measurement
Annex F (informative) - Determination of mean velocity
from float measurements
Bibliography
Describes methods for determining the velocity and cross-sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom.
| Committee |
CPI/113
|
| DevelopmentNote |
Supersedes BS ISO 748. (10/2000) Supersedes 93/210839 DC. (06/2005)
|
| DocumentType |
Standard
|
| Pages |
58
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
This International Standard specifies methods for determining the velocity and cross-sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom.
It covers methods of employing current-meters or floats to measure the velocities. It should be noted that although, in some cases, these measurements are intended to determine the stage-discharge relation of a gauging station, this International Standard deals only with single measurements of the discharge; the continuous recording of discharges over a period of time is covered in ISO1100-1 and ISO1100-2.
NOTE The methods for determining the velocity and cross-sectional area of water flowing in open channels with ice cover are specified in ISO9196.
| Standards | Relationship |
| NEN EN ISO 748 : 2007 | Identical |
| EN ISO 748:2007 | Identical |
| I.S. EN ISO 748:2007 | Identical |
| NF EN ISO 748 : 2009 | Identical |
| ISO 748:2007 | Identical |
| NBN EN ISO 748 : 2007 | Identical |
| NS EN ISO 748 : 2ED 2007 | Identical |
| DIN EN ISO 748:2008-02 | Identical |
| UNE-EN ISO 748:2009 | Identical |
A newer version of this standard is available.
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