How do I write these? I have seen others figure this out, and EFILive made one for me, but how do I do this myself?

I have some Aeroforce transmitters that read from 0-150 psi, and 0.5-4.5 VDC output.

How do I make a Calc-PID statement for these to read correctly when I input them into the analog inputs on a V2?

FWIW, the Aeroforce folks say to configure their gauge with an intercept of 37.5, and a slope of -18.7.

I am not looking for the metric units on this, just the imperial.