Technical Details; Ultrasound Generator; Ultrasonic Transducer; Test Vessel - 3B Scientific U10006 Bedienungsanleitung

N is the number of bright maxima and x the separa-
tion between them.
The speed of sound in the medium can now be calcu-
lated once again from the measured frequency n us-
ing equation (2).
Note:
With the U10008 test vessel it is only possible to set up
a good projection of the standing ultrasonic wave at a
frequency of 4 MHz. At 2 MHz and especially at 1 MHz
ultrasonic waves reflected from the bottom of the con-
tainer are superimposed destructively on the imping-
ing ultrasonic beam. Only for 4 MHz waves is the dif-
ference in the path length of the order of several wave-
lengths. At 8 MHz the amplitude of the emitted wave
is too small and also the absorption is much greater
(the absorption coefficient is proportional to the square
of the frequency). This means that no clear standing
waves are produced.
Example results:
Water:
a = a = 4.8 cm, f = 10 cm, n
1 2
s =3.03 m, n = 4 MHz, x = 8.9 cm, g
therefore: λ = 397 µm, c = 1590 m/s
(Table: 1480 m/s at 20°C)

4. Technical details

4.1 Ultrasound generator (U10006)
Frequency: 1, 2, 4, 8 MHz adjustable
Output signal: Sine wave, continuously adjustable
between 5 V
65 V
pp
Red control light
Display: 3-digit LCD, one decimal place,
height of digits 10 mm
Monitor signal: TTL, Frequency signal
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible
= 1.33, n = 1.45,
g
FL
= 5 mm, g = 4 mm
1 2
to approximately
pp
. Can be switched off.
Laser output:
Dimensions:
Mains voltage:
Power consumption: max. 60 VA; 5 VA minimum power
Fuse:

Ultrasonic transducer

Probe diameter:
Active surface area: 2 cm²
Cable length:
4.2 Test vessel (U10008)

Test vessel:

Volume:
Laser holder:
Transducer holder:
Lens on glass slide
Lens slide:
Lens:
4.3 Laser diode (U10007)
Beam spot:
Wavelength:
Power:
Supply voltage:
Current consumption: max. 35 mA
Connecting plug:
Dimensions:
10
3 V DC, max. 300 mW at socket
5.5 mm outer Ø, 2.5 mm inner Ø,
Can be switched off.
Red control light
256 x 86 x 156 mm
115/230 V, 50/60 Hz
(laser and ultrasound switched
off)
T 315 mA (230 V) / T 630 mA (115 V)
27 mm
1 m with BNC socket
100 x 100 x 120 mm
900 ml approx.
17 mm internal diameter
adjustable, designed for the
supplied transducer
76 mm x 26 mm Glass slide with
roughened gripping surface
Plano-convex, f = 100 mm
(in air), 16 mm Ø
< 6 mm at 3 m
650 nm
< 1 mW, laser safety class II
3 V DC
1 m cable with plug of 5.5 mm
outer Ø, 2.5 mm inner Ø
80 mm x 17 mm Ø