Does this circuit need any additional protection? Arduino to Pressure Transducer
The sensor outputs a voltage you're reading through the analog input of you arduino. In analog input the resistance of that pin is really high (I think you can check it on arduino's data sheet) so the current supplied by the transducer is really low. 
So you shouldn't have trouble about damaging your arduino or the transducer as far as you respect their max volt ratings, the only thing you should worry about between the transducer and the input is an analog filter in case you need to get rid of noise and unwanted signals or DC offsets.