A pressure transducer with a range +/-200Pa has both serial and analog outputs. I'm only interested in positive pressure besides sometimes the negative pressure needed to be measured when there is negative pressure offset. The pressure transducer DAC converts the serial to analog voltage output. And for some reason the voltage output needed to be used.
Currently the analog output is set to 0-10V and it means 0 to 200Pa pressure range corresponds to 0-10V voltage output range. But in this case sometimes negative pressure offset even small is outputted as zero volt which affects the measurements. This cane be seen in serial output but not analog output because the minimum is 0V for analog output. I dont want to track and zero this offset each time for automation reasons.
For a workaround I can set the range such that -200Pa to +200Pa will correspond to 0-10V and where in this case +5V to +10V will correspond to 0 to 200Pa.
I could only upload the manual here.
And here is main specs:
So to summarize currently the range 0 200Pa is mapped to 0 10V; but if I change the settings, it that case 0 200Pa will be mapped to +5V to +10V. In that case I can measure negative offset, but my confusion is how to quantify or expound on this change in terms of resolution.
0 200Pa was set to 10V change and now 0 200Pa will be set to 5V change. What does it change comparing to the previous matching in terms of precuson or resolution? Am I losing resolution here or anything else? What specs I need to focus on? Or do I need the analog output resolution?