How to connect wires in Omega Pressure Transducer 

This pressure transducer comes in two version 1) 0 to 5 vDC and 2) 0 to 10 vDC Please do not provide the higher supply voltage. It might damage the chip

This specific one you can use in wet and dry conditions. By using differential pressure transducer you can determine such as Delta P, flow rate etc.

Hey, I bought in Nov 2016 at that time price was $750 per each. But if you buy more than one Omega might give some discount. Below is the specification of the pressure transducer. PX419-10WDDUI WET/DRY DIFF PRESSURE TX, 0-10"H2O, IN 9-30VDC, OUT 4-20MA, 0.08%, DIN CONN