The Model 512 units are cased in 17-4 PH stainless steel; these general industrial transducers offer high reliability for both gage and absolute pressure measurements from 10 to 10000 psi (700 mbar to 700 bar).
Gage models for ranges of 500 psig and below are drift-free “true gage” design, with a second welded diaphragm to hermetically seal the gage reference from moisture or corrosive gases. A small hole vents the second diaphragm to ambient pressure. All absolute models have an internal sealed 0-psia reference.