BS 7118-1:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
15-07-1997
English
31-10-1990
Committees responsible
National foreword
Method
1. Scope
2. Normative references
3. Symbols and definitions
4. General
5. Uncertainties in individual calibration points
6. Linearity of the calibration graph
7. Fitting the best straight line
8. Detection of outliers
9. Uncertainty of calibration
10. Uncertainty in the use of the calibration graph for
a single measurement of flow-rate
11. Uncertainty in the average of several flow-rate
measurements
Annexes
A. Example for a closed conduit
B. Example for an open channel
C. Uncertainty associated with the calibration
coefficient when using a calibrated or standardized
flow-meter
D. Extrapolation of the calibration graph
E. Tests for outliers
F. Guidelines for the application of ISO 7066-1
G. Bibliography
Tables
1. Values of the F distribution for selected degrees
of freedom - Probability level 0,05
2. Value of Student's t at 95% confidence level
A.1 Calibration results
A.2 Component uncertainties
A.3 Quantities required to calculate uncertainty in
the calibration graph
B.1 Example of the manual computation of the stage-
discharge relation by the method of least squares
B.2 Tabulated values required to calculate se and smr
B.3 Example of the computation for the uncertainty in
the daily mean discharge using hourly values of
discharge
B.4 Tabulated values required to calculate se and X(v)
E.1 Testing of multiple outliers
E.2 Critical values for the extreme deviation outlier
test
E.3 Polynomial coefficients
Figures
1. Example of grouping data to establish linearity of
best fit straight line
2. Basic principles for best-fit straight lines
A.1 Discharge coefficient as a function of the Reynolds
number
A.2 Discharge coefficient as a function of 10 cubed /
((Red) to the power 1/2)
B.1 Stage-discharge curve
B.2 Current-meter rating
C.1 Contributions to uncertainty in the value used for C
D.1 Extrapolation of calibration graph method
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