Pressure (0 to 700kPa) DT015-1
Pressure (0 to 700kPa) DT015-1
Pressure (0 to 700kPa) DT015-1
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
<strong>Pressure</strong> (0 <strong>to</strong> <strong>700kPa</strong>) <strong>DT015</strong>-1<br />
Type: Gas <strong>Pressure</strong> Range: 0 <strong>to</strong> <strong>700kPa</strong><br />
Sensor description<br />
The <strong>DT015</strong>-1 is an absolute gas pressure<br />
sensor. It measures applied external<br />
pressure relative <strong>to</strong> zero pressure reference<br />
sealed inside the sensor.<br />
How it works<br />
The main sensing unit inside the <strong>DT015</strong>-1 is<br />
composed of a pressure sensitive<br />
membrane, and a flexible resis<strong>to</strong>r attached<br />
<strong>to</strong> it. This flexible resis<strong>to</strong>r changes its<br />
resistance when it bends. When the pressure<br />
alters, the resistance changes, and according <strong>to</strong> Ohm’s law so does the voltage<br />
drop across it. This voltage is then amplified <strong>to</strong> a range of 0-5 Volts, accepted by<br />
the analog-digital converter of the Data-Logger. The pressure is then calculated<br />
and recorded in the Logger’s memory.<br />
Calibration<br />
The <strong>DT015</strong>-1 ships fully calibrated. For further calibration an offset calibration screw<br />
is located at the back of the sensor case. Apply a known reference pressure <strong>to</strong> the<br />
sensor and start recording. Insert a flat screwdriver <strong>to</strong> the calibration hole and<br />
slowly turn the calibration screw until the reference value is reached.<br />
Selecting units<br />
MultiLab displays the data in kPa. <strong>to</strong> change <strong>to</strong> other pressure units:<br />
1. Click Setup Wizard on the main <strong>to</strong>olbar<br />
2. Click Properties next <strong>to</strong> the pressure sensor input<br />
3. Check the checkbox next <strong>to</strong> the desired unit <strong>to</strong> select it.<br />
4. Click OK<br />
What it is used for<br />
The <strong>DT015</strong>-1 is mostly used as a pressure sensor for experiments in Biology and<br />
Chemistry for <strong>to</strong>pics like gas laws.<br />
65
Fourier Systems<br />
Verifying the ideal gas law using <strong>DT015</strong>-1<br />
Specifications:<br />
• Range: 0-700 kPa (0 –<br />
7 atm)<br />
• 12-bit Resolution<br />
(TriLog): 0.125 kPa<br />
• 10-bit Resolution<br />
(MultiLogPRO,<br />
MultiLog): 0.5 kPa<br />
• Total accuracy:<br />
±0.05% FS<br />
• Operating<br />
temperature: 0-85C°<br />
• Response time: 1ms<br />
• Equipped with offset<br />
calibration screws<br />
66
Change language