AS 3778.5.1-1991

Measurement of water flow in open channels Dilution methods - Constant-rate injection method for the measurement of steady flow

Standards Australia

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1 - AS 3778.5.1-1991 MEASUREMENT OF WATER FLOW IN OPEN CHANNELS - DILUTION METHODS - CONSTANT-RATE INJECTION METHOD FOR THE...
4 - PREFACE
6 - 1 SCOPE AND FIELD OF APPLICATION
6 - 2 REFERENCES
6 - 3 TERMINOLOGY
6 - 4 UNITS OF MEASUREMENT
6 - 5 PRINCIPLE OF THE CONSTANT-RATE INJEC-TION METHOD
7 - 5.1 Method of direct measurement of concentration
7 - 5.2 Method of comparative dilutions
7 - 6 REQUIREDCHARACTERISTICS OFINJECTED SOLUTIONS
7 - 7 CHOICE OF THE MEASURING-REACH
7 - 7.1 General considerations for selection of site
7 - 7.2 Preliminary tests
10 - 8 PROCEDURE
10 - 8.1 Preparation of the concentrated solution
10 - 8.2 Injection of the concentrated solution
13 - 8.3 Measurement of rate of injection
14 - 8.4 Sampling
14 - 9 PRINCIPAL CHEMICAL SUBSTANCES AND METHODS OF ANALYSIS IN PRESENT-DAY USE
14 - 9.1 Method of colorimetric analysis
15 - 9.2 Conductivity method
16 - 9.3 Method of volumetric chemical analysis
17 - 10 ERRORS IN FLOW MEASUREMENTS
18 - ANNEX A - EXAMPLE OF THE CALCULATION OF FLOW RATE AND ESTIMATION OF TOLERANCES IN THE CASE OF VOLUMETRIC CHEMICAL ANALYSIS
18 - A.1 MEASUREMENT OF INJECTION RATE
18 - A.2 MEASUREMENTOF SAMPLE CONCENTRATIONS
18 - A.3 MEASUREMENTOF STANDARD DILUTIONS
19 - A.4 FLOW RATE AND TOLERANCE
20 - ANNEX B - EXAMPLE OF THE CALCULATION OF FLOW RATE AND ESTIMATION OF TOLERANCES IN THE CASE OF CONDUCTIVIMETRIC ANALYSIS
20 - B.1 MEASUREMENT OF THE CHANGE PRODUCED BY THE INJECTION
20 - B.2 MEASUREMENTOF DILUTION STANDARDS
21 - B.3 CALCULATION OF THE DILUTION RATIO
21 - B.4 CALCULATION OF THE FLOW RATE

Abstract

Specifies methods for the measurement of water flow in channels under steady flow conditions by the dilution method using constant-rate injection. It is technically identical with and reproduced from ISO 555-1:1973.