scale setting in max

[Airo]

I have a pressure transducer, which has a differential pressure range of 0 to 1.0 psi and output range of 0 to 18 mV @ 12 VDC excitation. I want to make sure what I am doing is right thing to do or not.

What I do is mapping the pressure range and voltage output in MAX so that 0 psi corresponds to 0 mV and 1.0 psi corresponds to 18 mV assuming linear relation between the pressure range and output voltage range.

Is this the way to go? What if the pressure goes negative? The differential thing will take care of it?


Thank you.

Airo

[JedRetherford]

Airo,

It sounds like you are setting this up in the right way. As long as you can confirm that the parameters that you are choosing (0-18mV, linear, etc.) are the same as those in the documentation for your sensor, this should work.

The only thing that I am concerned about is your question about the pressure becoming negative. When you are setting up the ranges, the range that you choose will be the only possible outputs of your sensor. So if you choose 0 - 1 psi as your range, you will never be able to measure -.1 or 1.1 psi because they will be out of range.

I am hoping that those are the answers to your questions. I am somewhat confused by your last few questions. If you need additional clarification please post a more detailed question, and this for
um may be able to help you to get it answered.

Best of luck.

Jed R.
Applications Engineer
National Instruments