Here is the datasheet of Honeywell ABP2 Pressure Sensors series.
In Figure 7 on page 11, you can see a lot of options. Here are the absolute ones:
I don't understand why they have to provide different output units. They are all linear and it's easy to convert from one to another. If the output is digital it's just a multiplication, if the output is analog the units are virtually meaningless - it's a matter of adjusting a voltage to the following stages.
On the other side, if they did so there must be a real need.
Can you please help me to understand why?
Do I need to mind this when I select the component or I can just pick up the one closer to my requirements that is available on the market?
To better clarify the question, I'm not interested about why people use different units. I'm asking what the implications are in selecting a component (especially for the digital output) and what the advantages are to have different products with the very same range (i.e. 1 bar = 100 kPa.)