I picked up a few of these sensors for a breathalyzer project I'm putting together. I'm using these to detect if the user is blowing into the breathalyzer.
It seems that this sensor doesn't like side effects of a human blowing directly into it.
You could use some kind of membrane to separate the human's gasses from the sensor.
I think this sensor acts like a wheatstone bridge but I'm not quite sure. If someone could verify my assumption, I would appreciate it.
The sensor is drawn as a bridge.
And so is its example application.
Also, I have no idea how much voltage I can supply this with, I plan on using 5 volts. Will I be ok with this voltage?
You do not supply a voltage, you supply a current.
As you have 5 volts available for your Arduino, you can probably use that as your source.
Do I have to limit the amount of current going to this sensor?
Yes and no.
You do not really limit the current, you set the current.
As the current will stay at it's value, the voltage has to change upon sensing a changed pressure.