3B Scientific Relative Pressure Sensor, ±1000 hPa - Handbuch (Seite 6)

2
• Note the “positive” and “negative” labelling of
the hose connections - connect the hoses
correctly according to the effective direction of
the pressure.
• During the experiment, check that no elastic
expansion of the hose is occurring – this can
cause the pressure reading to be lower than
the correct value.
6. Application
Measurement of the pressure difference in the
transparent Stirling engine U10050, and analysis of
the data using 3B NETlab
TM .
7. Sample experiment
Recording operating pressures in Stirling engine
U10050 while it is in motion
Apparatus required:
1 3B NETlog TM unit U11300
1 3B NETlab TM program U11310
1 Relative pressure sensor, ±1000 hPa U11323
1 Transparent Stirling engine U10050
• Set up the experiment as shown in fig. 1.
• Connect the relative pressure sensor to the 3B
NETlog
TM unit and wait for the sensor to be
detected.
• Using a suitable length of silicone hose, make a
pressure connection between the “positive”
hose connection of the sensor box and the
hose connection of the Stirling engine.
• Allow the engine to heat up and, after a few
minutes, set it running.
• Open the application program (template) for
the experiment with the ±1000 hPa relative
pressure sensor on the 3B NETlab
TM unit.
• Measure the pressures.
• Evaluate the curve resulting from the
measurements (fig. 2).
Fig. 1 Experiment set-up for recording operating pressures in Stirling engine U10050 while in motion