Will sensors sharing volt source (DAQ 31 & 32) interfere?

[Newbie_Luke]

If one was to connect two different sensors (specifically humidity sensors) to the same voltage supply (NI-DAQ pin 31 and 32) (different AI pins) will there be any interference between the two or will they read just as effectively as if connected to two isolated power supplies?

[Blokk]

Could you specify the hardware you want to use to power the moisture sensors? Also specify the hardware you will use to read out the analogue voltage signal of the sensors. These are two separate DAQ devices, or you want to use the same DAQ device for measuring and also for powering your moisture sensors? Also specify the electrical power requirement of your sensors. Will you DAQ able to supply the required current to your sensors? Do you use the required voltage range to power you sensor(s)? For example most of the moisture sensors I use can accept DC voltages between 9-30 V.

I always use separate DC power supply (24 VDC), usually I try to buy some quality ones like Siemens with DIN rail so we can accomodate the things easy in electrical plastic enclosures...These are cheap and reliable PSUs, I do not like the idea to power sensors with DAQ equipment...