dynamic pressure transducer (mv output) measure mv to bar

[e.aydeniz]

Hi everyone. I added the pdf that show specification. How can I convert mv to bar. What is that formula. Sensor measure scaling 21 bar or 300 psi.

[didje007]

Full scale is 100mV  ( found in the datasheet) therefore 100mV is 21 bar

[e.aydeniz]

Sorry for my late reply. My data acquisition system is NI PXIE-4481. Coluld I need to an amplifier for high voltage ? or if I am not to need it ,Can I get it in labview with programmatically ? (for example 0,1 V(100mv)*100=10V output..

[cbutcher]

In principle you can just measure directly.

However, it will be significantly less accurate. You can at least improve this by reducing the range of your acquisition (e.g. +-1V instead of +-10V as the input range).

An amplifier will likely improve your accuracy (provided the amplifier isn't terrible).

You cannot multiply the physical signal with LabVIEW, and although you can easily multiply the measured value, it doesn't really help you.

What you want to do is write an equation converting voltage to pressure and then apply that. Perhaps something like P = 2.1*V/0.1 = 21*V (where P in bar, V in volts)