AS 3778.6.4-1992

1 - AS 3778.6.4-1992 MEASUREMENT OF WATER FLOW IN OPEN CHANNELS - MEASURING DEVICES, INSTRUMENTS AND EQUIPMENT-ECHO SOUNDERS...
4 - PREFACE
5 - CONTENTS
6 - 1 Scope and field of application
6 - 2 Reference
6 - 3 Definitions
6 - 4 Units of measurement
6 - 5 General
6 - 6 Principle
6 - 6.1 General
6 - 6.2 Non-recording echo sounders
7 - 6.3 Analogue recording echo sounders
7 - 6.4 Digital echo sounders
7 - 7 Selection of instrument
7 - 7.1 Effects of operating frequency
7 - 7.2 Effect of beam width
7 - 7.3 Type of data display
7 - 7.3.1 Non-recording echo sounders
7 - 7.3.2 Analogue recording echo sounders
7 - 7.3.3 Digital echo sounders
8 - 7.4 Accuracy
8 - 8 Instruments performance criteria
8 - 8.1 Information to be specified by the user
8 - 8.2 Information to be specified by the manufacturer
8 - 8.3 Housing
8 - 8.4 Additional features
8 - 8.4.1 Non-recording instruments
8 - 8.4.2 Recording instruments
9 - 8.4.3 Digital instruments
9 - 9 Use of echo sounders
9 - 9.1 Calibration
9 - 9.2 Interpretation of data
9 - 9.3 Precautions
9 - 10 Operational manual
10 - Annex - Characteristics of sound in water
10 - A.1 Velocity of sound in water
10 - A.2 Transmission of sound in water
11 - A.3 Reverberation
11 - A.4 Reflection coefficient of the bed

Provides information concerning the principle of operation, performance and selection criteria for echo sounders used in depth measurements for open channel flow (and related) measurements. The use of standard terminology is promoted. Information on the characteristics of sound in water is provided in an annex. It is identical with and has been reproduced from ISO 4366:1979.

This International Standard provides information concerning the principle of operation, performance and selection criteria for echo sounders used in depth measurements for open channel flow (and related) measurements. The use of standard terminology is promoted. Information on the characteristics of sound in water is provided in annex.

First published as AS 3778.6.4-1992.