What I am asking is what is you min/max volts=psi set to in Logworks? Why did you set them the way you set them.

I have mine set to:

0v = -14.7 psi
1.6v = 0psi
5.0v = 31.1 psi

This is based on the info that I got from the links posted above.

 

Oh, I see. I misunderstood your question. You are asking about the configuration or set-up of the sensor.

The sensor that I use, the GM3.3 bar (not the GM 3 bar), has a linear response with respect to voltage. The pictures I posted a few threads up show that relationship. So, since I use the SSI-4 and LogWorks, it gives you the ability to enter two voltages and their respective pressure readings and then expand that to 0...5V.

The 3.3 bar sensor, from the datasheet posted, has the following properties for 4.5V and .25V:
4.5V=48.298 psi absolute = 333kpa
.25V=7.252 psi absolute = 50 kpa

So, I could simply enter those two data points and LogWorks will extrapolate out.

Since I like crunching the numbers, myself, I simply found the slope from the two points, and then found the equation, then applied to psig for actual boost pressure:

m=41.046/4.25=9.658

y=9.658x+4.8375

or boost pressure (-14.7 psi)

y=9.658x - 9.8625
.25V = -7.448 psi
4.5V = 33.598

or

0V = -9.863 psi
5V = 38.4275




Eric

 

On EvoScan, how do you get the IDC number and what do they mean (like what are the lowest numbers and the highest numbers)....