I want to read this sensor(MPX4115AP) data accurately but I am not sure about using the given transfer function and the datasheet information good enough. The device is ratio-metric and temperature dependent.
Nominal transfer function is given as:
Above the sensor supply voltage Vcc is 5.1V but in my case it is less than 5V and it might vary so I also monitor it.
I have wired the the sensor as follows and reading the output via a micro-controller:
The micro-controller also reads the ambient temperature T and supply the voltage Vcc simultaneously.
So I have the ambient temperature data T, and the sensor's supply voltage data Vcc as well as the equation given in the datasheet. By using these, I need to write a single formula in C which can output the pressure data. I am afraid to make a mistake and measure the pressure wrong.
I am a bit lost in the datasheet to obtain a correct accurate equation. How can we obtain the transfer function considering the ambient temperature T and the sensor's supply voltage Vcc?