Principle of an echo sounder

VP1.7.4.2

Principle of en echo sounder (P1.7.4.2)

Echo sounder signal (P1.7.4.2)

Principle of an echo sounder

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Description

The experiment P1.7.4.2 utilizes the principle of an echo sounder to determine the velocity of sound in the air, as well as to determine distances. An echo sounder emits pulsed ultrasonic signals and measures the time at which the signal reflected at the boundary surface is received. For the sake of simplicity, the transmitter and receiver are set up as nearly as possible in the same place. When the velocity of sound c is known, the time difference t between transmission and reception can be used in the relationship

to determine the distance s to the reflector or, when the distance is known, the velocity of sound.

Components of equipment sets

1	416002 4	Ultrasonic transmitter
1	416003 4	Ultrasonic receiver
1	416015	AC amplifier
1	416014 8	Generator, 40 kHz
1	575302	Oscilloscope 30 MHz, digital, PT1265
2	57524 4	Screened cable, BNC/4 mm Plug
1	58766 4	Reflection plate
1	30042 4	Stand rod, 47 cm, 12 mm diam.
3	30011 4	Saddle base
1	31102 4	Metal rule, 1 m

Experiment Instructions

PDF (Experiment description)

P1.7.4.2 Principle of an echo sounder

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Principle of an echo sounder

Description

Components of equipment sets

Experiment Instructions

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