We use low pressure inflatables, and we would like to be able to know what kinds of atmospheric pressure we are working with, so we can more accurately control the inflation. Could you please help point us in the right direction for what type of sensor we should use?
Typically you would control inflation by measuring the differential pressure between the interior and exterior of the inflatable.
If the inflatable exterior pressure is atmospheric pressure then you can use a vented gauge reference pressure sensor such as the DMP343 which will measure over the range of 0-10 mbar / 4 inWG or higher.
If the differential pressure is much lower than 10 mbar / 4 inWG then we would suggest the DPS which will measure over a range as low as 0 to 0.1 mbar / 0.04 inWG.
Since the DPS is a differential pressure sensor with two connection ports it can also be used in applications where the inflatable exterior pressure is not atmospheric pressure, and requires a connection point in addition to the inflatable interior pressure.
For higher pressure ranges requiring two fitting points for inflatable interior & exterior pressure, we would suggest the DMD341 or DPS200 which have pressure ranges starting from 0-6 mbar / 2.4 inWG.