3B SCIENTIFIC PHYSICS 1000568 User manual

3B SCIENTIFIC®PHYSICS
1
Displacement Sensor 1000568
Instruction sheet
10/15 Hh
1. Description
Displacement sensor inside a 3B NETlogTM sen-
sor box and featuring a built-in precision potenti-
ometer plus a rotating pulley onto which a string
can be wound in order to measure displacement.
Suitable for recording periodic and oscillatory
movements which can be traced by the turning of
the string on the pulley without putting too much
strain on the precision potentiometer when it
reaches the limits of rotation.
The displacement sensor is detected automati-
cally by the 3B NETlogTM unit.
2. Operation
Set up the experiment with the displacement
sensor included.
If possible, select a zero point in such a way
that the limits of rotation of the pulley are
never reached.
Turn on the 3B NETlogTM unit and connect
the displacement sensor to one of the ana-
log inputs, A or B, on the 3B NETlogTM unit.
Wait for the unit to automatically detect the
sensor (it will then display "S / U", meaning
"displacement per volt").
3. Technical data
Internal diameter
of pulley: 22 mm
Max. displacement: 61 mm
Resolution: 0.3 mm
Sensor: Precision potenti-
ometer using a wire
Max. angle of rotation
for sensor pulley: 320°
Resistance range: 10 kΩ/44 mm
Max. permitted speed of
rotation for long-term use: 1 turn/second
Max. permitted torque
at end limits 100 Ncm
4. Apparatus supplied
1 Displacement sensor
1 Stand rod with thread, 120 mm
1 8-pin miniDIN cable, 1 m
1 Nylon thread, 1 m, 1 mm diam.
1 Instruction manual

2
5. Example experiment
Recording a pV diagram for a G-model Stir-
ling motor using 3B NETlogTM and 3B
NETlabTM
Required equipment:
1 Stirling Engine G 1002594
1 3B NETlogTM @ 115 V 1000539
or
1 3B NETlogTM @ 230 V 1000540
1 3B NETlabTM 1000544
1 Displacement Sensor 1000568
1 Relative Pressure Sensor
±1000 hPa 1000548
1 Sensor Holder for
Stirling Engine G 1008500
1 DC Power Supply
0 –20 V, 0 –5 A @ 115 V 1003311
or
1 DC Power Supply
0 –20 V, 0 –5 A @ 230 V 1003312
1 set of experiment leads 1002843
Set up the experiment as in Fig. 1.
Wrap the thread around the displacement
sensor’s pulley as in Fig. 2.
Turn on the 3B NETlogTM unit and wait for it
to automatically detect the sensor box.
Connect the Stirling engine’s DC motor to
the DC power supply and set an output volt-
age of 6 V so that the Stirling engine oper-
ates at medium speed.
Open the 3B NETlogTM template "Stirling en-
gine G".
Only allow the Stirling motor to operate at
high-speed for short periods so as not to
overstress the displacement sensor.
6. Disposal
The packaging should be disposed of at
local recycling points.
Should you need to
dispose of the equip-
ment itself, never
throw it away in normal
domestic waste. Local
regulations for the dis-
posal of electrical
equipment will apply.
Do not dispose of the battery in the regular
household garbage. Follow the local regulations
(In Germany: BattG; EU: 2006/66/EG).
Fig. 1 Experiment set-up for recording the pV diagram of a G-model Stirling engine

3B Scientific GmbH ▪Rudorffweg 8 ▪21031 Hamburg ▪Germany ▪www.3bscientific.com
Subject to technical amendments
© Copyright 2015 3B Scientific GmbH
Fig. 2 Attachment of the thread to displacement sensor pulley
Fig. 3 Graph of pV diagram for Stirling engine G using 3B NETlabTM