3B SCIENTIFIC® PHYSICS
Displacement Sensor
1000568 / U11371
Instruction sheet
04/12 Hh
1. Description
Displacement sensor inside a 3B NETlogTM sensor box and featuring a built-in precision potentiometer 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 automatically 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 analog 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 |
1
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
5. Example experiment
Recording a pV diagram for a G-model Stirling motor using 3B NETlogTM and 3B NETlabTM
Required equipment:
1 |
Stirling Engine G |
1002594 |
/ U10050 |
1 |
3B NETlogTM (115 V) |
1000539 |
/ U11300-115 |
or |
|
|
|
1 |
3B NETlogTM (230 V) |
1000540 |
/ U11300-230 |
1 |
3B NETlabTM |
1000544 |
/ U11310 |
1 |
Displacement Sensor |
1000568 |
/ U11371 |
1 |
Relative Pressure Sensor |
|
|
±1000 hPa |
1000548 |
/ U11323 |
|
1 |
Sensor Holder for |
|
|
Stirling Engine G |
1008500 |
/ U11372 |
|
1 |
DC Power Supply |
|
|
0 |
– 20 V, 0 – 5 A (115 V) |
1003311 |
/ U33020 |
or |
|
|
|
1 |
DC Power Supply |
|
|
0 |
– 20 V, 0 – 5 A (230 V) |
1003312 |
/ U33020 |
Experiment leads |
1002843 |
/ U138021 |
|
•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 voltage of 6 V so that the Stirling engine operates at medium speed.
•Open the 3B NETlogTM template "Stirling engine G".
•Only allow the Stirling motor to operate at highspeed 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 equipment itself, never throw it away in normal domestic waste. Local regulations for the disposal of electrical equipment will apply.
Fig. 1 Experiment set-up for recording the pV diagram of a G-model Stirling engine
2
Loading...